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4463 lines (3914 loc) · 138 KB
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package agent_test
import (
"bufio"
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"net"
"net/http"
"net/http/httptest"
"net/netip"
"os"
"os/exec"
"os/user"
"path"
"path/filepath"
"regexp"
"runtime"
"slices"
"strconv"
"strings"
"testing"
"time"
"github.com/bramvdbogaerde/go-scp"
"github.com/google/uuid"
"github.com/ory/dockertest/v3"
"github.com/ory/dockertest/v3/docker"
"github.com/pion/udp"
"github.com/pkg/sftp"
"github.com/prometheus/client_golang/prometheus"
promgo "github.com/prometheus/client_model/go"
"github.com/spf13/afero"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/goleak"
"golang.org/x/crypto/ssh"
"golang.org/x/xerrors"
"tailscale.com/net/speedtest"
"tailscale.com/tailcfg"
"cdr.dev/slog/v3"
"cdr.dev/slog/v3/sloggers/slogtest"
"github.com/coder/coder/v2/agent"
"github.com/coder/coder/v2/agent/agentcontainers"
"github.com/coder/coder/v2/agent/agentssh"
"github.com/coder/coder/v2/agent/agenttest"
"github.com/coder/coder/v2/agent/proto"
"github.com/coder/coder/v2/agent/usershell"
"github.com/coder/coder/v2/codersdk"
"github.com/coder/coder/v2/codersdk/agentsdk"
"github.com/coder/coder/v2/codersdk/workspacesdk"
"github.com/coder/coder/v2/cryptorand"
"github.com/coder/coder/v2/pty/ptytest"
"github.com/coder/coder/v2/tailnet"
"github.com/coder/coder/v2/tailnet/tailnettest"
"github.com/coder/coder/v2/testutil"
"github.com/coder/quartz"
)
func TestMain(m *testing.M) {
if os.Getenv("CODER_TEST_RUN_SUB_AGENT_MAIN") == "1" {
// If we're running as a subagent, we don't want to run the main tests.
// Instead, we just run the subagent tests.
exit := runSubAgentMain()
os.Exit(exit)
}
goleak.VerifyTestMain(m, testutil.GoleakOptions...)
}
var sshPorts = []uint16{workspacesdk.AgentSSHPort, workspacesdk.AgentStandardSSHPort}
// TestAgent_CloseWhileStarting is a regression test for https://github.com/coder/coder/issues/17328
func TestAgent_ImmediateClose(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
logger := slogtest.Make(t, &slogtest.Options{
// Agent can drop errors when shutting down, and some, like the
// fasthttplistener connection closed error, are unexported.
IgnoreErrors: true,
}).Leveled(slog.LevelDebug)
manifest := agentsdk.Manifest{
AgentID: uuid.New(),
AgentName: "test-agent",
WorkspaceName: "test-workspace",
WorkspaceID: uuid.New(),
}
coordinator := tailnet.NewCoordinator(logger)
t.Cleanup(func() {
_ = coordinator.Close()
})
statsCh := make(chan *proto.Stats, 50)
fs := afero.NewMemMapFs()
client := agenttest.NewClient(t, logger.Named("agenttest"), manifest.AgentID, manifest, statsCh, coordinator)
t.Cleanup(client.Close)
options := agent.Options{
Client: client,
Filesystem: fs,
Logger: logger.Named("agent"),
ReconnectingPTYTimeout: 0,
EnvironmentVariables: map[string]string{},
}
agentUnderTest := agent.New(options)
t.Cleanup(func() {
_ = agentUnderTest.Close()
})
// wait until the agent has connected and is starting to find races in the startup code
_ = testutil.TryReceive(ctx, t, client.GetStartup())
t.Log("Closing Agent")
err := agentUnderTest.Close()
require.NoError(t, err)
}
// NOTE(Cian): I noticed that these tests would fail when my default shell was zsh.
// Writing "exit 0" to stdin before closing fixed the issue for me.
func TestAgent_Stats_SSH(t *testing.T) {
t.Parallel()
for _, port := range sshPorts {
t.Run(fmt.Sprintf("(:%d)", port), func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
//nolint:dogsled
conn, _, stats, _, _ := setupAgent(t, agentsdk.Manifest{}, 0)
sshClient, err := conn.SSHClientOnPort(ctx, port)
require.NoError(t, err)
defer sshClient.Close()
session, err := sshClient.NewSession()
require.NoError(t, err)
defer session.Close()
stdin, err := session.StdinPipe()
require.NoError(t, err)
err = session.Shell()
require.NoError(t, err)
// Generate SSH traffic so the connstats window sees the session.
_, err = stdin.Write([]byte("echo test\n"))
require.NoError(t, err)
assertSSHStats(t, stats)
_, err = stdin.Write([]byte("exit 0\n"))
require.NoError(t, err, "writing exit to stdin")
_ = stdin.Close()
err = session.Wait()
require.NoError(t, err, "waiting for session to exit")
})
}
// Regression test for CODAGT-517: the barrier blocks reportLoop's
// initial UpdateStats, so on unfixed code the connstats callback is
// never installed and handshake traffic is lost. On fixed code the
// callback is installed at creation, so traffic is captured.
t.Run("StatsCallbackRace", func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
barrier := make(chan struct{})
//nolint:dogsled
conn, _, stats, _, _ := setupAgent(t, agentsdk.Manifest{}, 0,
func(c *agenttest.Client, _ *agent.Options) {
c.SetUpdateStatsOverride(func(
ctx context.Context,
req *proto.UpdateStatsRequest,
next func(context.Context, *proto.UpdateStatsRequest) (*proto.UpdateStatsResponse, error),
) (*proto.UpdateStatsResponse, error) {
if req.Stats == nil {
select {
case <-ctx.Done():
return nil, ctx.Err()
case <-barrier:
}
}
return next(ctx, req)
})
},
)
// Connect SSH while the barrier holds reportLoop blocked.
sshClient, err := conn.SSHClientOnPort(ctx, workspacesdk.AgentStandardSSHPort)
require.NoError(t, err)
defer sshClient.Close()
session, err := sshClient.NewSession()
require.NoError(t, err)
defer session.Close()
stdin, err := session.StdinPipe()
require.NoError(t, err)
err = session.Shell()
require.NoError(t, err)
// Shell must be idle so the only traffic is the SSH handshake.
close(barrier)
assertSSHStats(t, stats)
_, err = stdin.Write([]byte("exit 0\n"))
require.NoError(t, err, "writing exit to stdin")
_ = stdin.Close()
err = session.Wait()
require.NoError(t, err, "waiting for session to exit")
})
}
// assertSSHStats waits for ConnectionCount, RxBytes, TxBytes, and
// SessionCountSsh to be nonzero on the stats channel.
func assertSSHStats(t *testing.T, stats <-chan *proto.Stats) {
t.Helper()
var connectionCountSeen, rxBytesSeen, txBytesSeen, sessionCountSSHSeen bool
require.Eventuallyf(t, func() bool {
s, ok := <-stats
if !ok {
return false
}
t.Logf("got stats: ConnectionCount=%d, RxBytes=%d, TxBytes=%d, SessionCountSsh=%d",
s.ConnectionCount, s.RxBytes, s.TxBytes, s.SessionCountSsh)
if s.ConnectionCount > 0 {
connectionCountSeen = true
}
if s.RxBytes > 0 {
rxBytesSeen = true
}
if s.TxBytes > 0 {
txBytesSeen = true
}
if s.SessionCountSsh == 1 {
sessionCountSSHSeen = true
}
return connectionCountSeen && rxBytesSeen && txBytesSeen && sessionCountSSHSeen
}, testutil.WaitLong, testutil.IntervalFast,
"never saw all SSH stats",
)
}
func TestAgent_Stats_ReconnectingPTY(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
//nolint:dogsled
conn, _, stats, _, _ := setupAgent(t, agentsdk.Manifest{}, 0)
ptyConn, err := conn.ReconnectingPTY(ctx, uuid.New(), 128, 128, "bash")
require.NoError(t, err)
defer ptyConn.Close()
data, err := json.Marshal(workspacesdk.ReconnectingPTYRequest{
Data: "echo test\r\n",
})
require.NoError(t, err)
_, err = ptyConn.Write(data)
require.NoError(t, err)
var s *proto.Stats
// We are looking for four different stats to be reported. They might not all
// arrive at the same time, so we loop until we've seen them all.
var connectionCountSeen, rxBytesSeen, txBytesSeen, sessionCountReconnectingPTYSeen bool
require.Eventuallyf(t, func() bool {
var ok bool
s, ok = <-stats
if !ok {
return false
}
if s.ConnectionCount > 0 {
connectionCountSeen = true
}
if s.RxBytes > 0 {
rxBytesSeen = true
}
if s.TxBytes > 0 {
txBytesSeen = true
}
if s.SessionCountReconnectingPty == 1 {
sessionCountReconnectingPTYSeen = true
}
return connectionCountSeen && rxBytesSeen && txBytesSeen && sessionCountReconnectingPTYSeen
}, testutil.WaitLong, testutil.IntervalFast,
"never saw all stats: %+v, saw connectionCount: %t, rxBytes: %t, txBytes: %t, sessionCountReconnectingPTY: %t",
s, connectionCountSeen, rxBytesSeen, txBytesSeen, sessionCountReconnectingPTYSeen,
)
}
func TestAgent_Stats_Magic(t *testing.T) {
t.Parallel()
t.Run("StripsEnvironmentVariable", func(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
//nolint:dogsled
conn, _, _, _, _ := setupAgent(t, agentsdk.Manifest{}, 0)
sshClient, err := conn.SSHClient(ctx)
require.NoError(t, err)
defer sshClient.Close()
session, err := sshClient.NewSession()
require.NoError(t, err)
session.Setenv(agentssh.MagicSessionTypeEnvironmentVariable, string(agentssh.MagicSessionTypeVSCode))
defer session.Close()
command := "sh -c 'echo $" + agentssh.MagicSessionTypeEnvironmentVariable + "'"
expected := ""
if runtime.GOOS == "windows" {
expected = "%" + agentssh.MagicSessionTypeEnvironmentVariable + "%"
command = "cmd.exe /c echo " + expected
}
output, err := session.Output(command)
require.NoError(t, err)
require.Equal(t, expected, strings.TrimSpace(string(output)))
})
t.Run("TracksVSCode", func(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
t.Skip("Sleeping for infinity doesn't work on Windows")
}
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
//nolint:dogsled
conn, agentClient, stats, _, _ := setupAgent(t, agentsdk.Manifest{}, 0)
sshClient, err := conn.SSHClient(ctx)
require.NoError(t, err)
defer sshClient.Close()
session, err := sshClient.NewSession()
require.NoError(t, err)
session.Setenv(agentssh.MagicSessionTypeEnvironmentVariable, string(agentssh.MagicSessionTypeVSCode))
defer session.Close()
stdin, err := session.StdinPipe()
require.NoError(t, err)
err = session.Shell()
require.NoError(t, err)
require.Eventuallyf(t, func() bool {
s, ok := <-stats
t.Logf("got stats: ok=%t, ConnectionCount=%d, RxBytes=%d, TxBytes=%d, SessionCountVSCode=%d, ConnectionMedianLatencyMS=%f",
ok, s.ConnectionCount, s.RxBytes, s.TxBytes, s.SessionCountVscode, s.ConnectionMedianLatencyMs)
return ok &&
// Ensure that the connection didn't count as a "normal" SSH session.
// This was a special one, so it should be labeled specially in the stats!
s.SessionCountVscode == 1 &&
// Ensure that connection latency is being counted!
// If it isn't, it's set to -1.
s.ConnectionMedianLatencyMs >= 0
}, testutil.WaitLong, testutil.IntervalFast,
"never saw stats",
)
_, err = stdin.Write([]byte("exit 0\n"))
require.NoError(t, err, "writing exit to stdin")
_ = stdin.Close()
err = session.Wait()
require.NoError(t, err)
assertConnectionReport(t, agentClient, proto.Connection_VSCODE, 0, "")
})
t.Run("TracksJetBrains", func(t *testing.T) {
t.Parallel()
if runtime.GOOS != "linux" {
t.Skip("JetBrains tracking is only supported on Linux")
}
ctx := testutil.Context(t, testutil.WaitLong)
// JetBrains tracking works by looking at the process name listening on the
// forwarded port. If the process's command line includes the magic string
// we are looking for, then we assume it is a JetBrains editor. So when we
// connect to the port we must ensure the process includes that magic string
// to fool the agent into thinking this is JetBrains. To do this we need to
// spawn an external process (in this case a simple echo server) so we can
// control the process name. The -D here is just to mimic how Java options
// are set but is not necessary as the agent looks only for the magic
// string itself anywhere in the command.
_, b, _, ok := runtime.Caller(0)
require.True(t, ok)
dir := filepath.Join(filepath.Dir(b), "../scripts/echoserver/main.go")
echoServerCmd := exec.Command("go", "run", dir,
"-D", agentssh.MagicProcessCmdlineJetBrains)
stdout, err := echoServerCmd.StdoutPipe()
require.NoError(t, err)
err = echoServerCmd.Start()
require.NoError(t, err)
defer echoServerCmd.Process.Kill()
// The echo server prints its port as the first line.
sc := bufio.NewScanner(stdout)
sc.Scan()
remotePort := sc.Text()
//nolint:dogsled
conn, agentClient, stats, _, _ := setupAgent(t, agentsdk.Manifest{}, 0)
sshClient, err := conn.SSHClient(ctx)
require.NoError(t, err)
tunneledConn, err := sshClient.Dial("tcp", fmt.Sprintf("127.0.0.1:%s", remotePort))
require.NoError(t, err)
t.Cleanup(func() {
// always close on failure of test
_ = conn.Close()
_ = tunneledConn.Close()
})
require.Eventuallyf(t, func() bool {
s, ok := <-stats
t.Logf("got stats with conn open: ok=%t, ConnectionCount=%d, SessionCountJetBrains=%d",
ok, s.ConnectionCount, s.SessionCountJetbrains)
return ok && s.SessionCountJetbrains == 1
}, testutil.WaitLong, testutil.IntervalFast,
"never saw stats with conn open",
)
// Kill the server and connection after checking for the echo.
requireEcho(t, tunneledConn)
_ = echoServerCmd.Process.Kill()
_ = tunneledConn.Close()
require.Eventuallyf(t, func() bool {
s, ok := <-stats
t.Logf("got stats after disconnect %t, %d",
ok, s.SessionCountJetbrains)
return ok &&
s.SessionCountJetbrains == 0
}, testutil.WaitLong, testutil.IntervalFast,
"never saw stats after conn closes",
)
assertConnectionReport(t, agentClient, proto.Connection_JETBRAINS, 0, "")
})
}
func TestAgent_SessionExec(t *testing.T) {
t.Parallel()
for _, port := range sshPorts {
t.Run(fmt.Sprintf("(:%d)", port), func(t *testing.T) {
t.Parallel()
session := setupSSHSessionOnPort(t, agentsdk.Manifest{}, codersdk.ServiceBannerConfig{}, nil, port)
command := "echo test"
if runtime.GOOS == "windows" {
command = "cmd.exe /c echo test"
}
output, err := session.Output(command)
require.NoError(t, err)
require.Equal(t, "test", strings.TrimSpace(string(output)))
})
}
}
//nolint:tparallel // Sub tests need to run sequentially.
func TestAgent_Session_EnvironmentVariables(t *testing.T) {
t.Parallel()
tmpdir := t.TempDir()
// Defined by the coder script runner, hardcoded here since we don't
// have a reference to it.
scriptBinDir := filepath.Join(tmpdir, "coder-script-data", "bin")
manifest := agentsdk.Manifest{
EnvironmentVariables: map[string]string{
"MY_MANIFEST": "true",
"MY_OVERRIDE": "false",
"MY_SESSION_MANIFEST": "false",
},
}
banner := codersdk.ServiceBannerConfig{}
session := setupSSHSession(t, manifest, banner, nil, func(_ *agenttest.Client, opts *agent.Options) {
opts.ScriptDataDir = tmpdir
opts.EnvironmentVariables["MY_OVERRIDE"] = "true"
})
err := session.Setenv("MY_SESSION_MANIFEST", "true")
require.NoError(t, err)
err = session.Setenv("MY_SESSION", "true")
require.NoError(t, err)
command := "sh"
echoEnv := func(t *testing.T, w io.Writer, env string) {
if runtime.GOOS == "windows" {
_, err := fmt.Fprintf(w, "echo %%%s%%\r\n", env)
require.NoError(t, err)
} else {
_, err := fmt.Fprintf(w, "echo $%s\n", env)
require.NoError(t, err)
}
}
if runtime.GOOS == "windows" {
command = "cmd.exe"
}
stdin, err := session.StdinPipe()
require.NoError(t, err)
defer stdin.Close()
stdout, err := session.StdoutPipe()
require.NoError(t, err)
err = session.Start(command)
require.NoError(t, err)
// Context is fine here since we're not doing a parallel subtest.
ctx := testutil.Context(t, testutil.WaitLong)
go func() {
<-ctx.Done()
_ = session.Close()
}()
s := bufio.NewScanner(stdout)
//nolint:paralleltest // These tests need to run sequentially.
for k, partialV := range map[string]string{
"CODER": "true", // From the agent.
"MY_MANIFEST": "true", // From the manifest.
"MY_OVERRIDE": "true", // From the agent environment variables option, overrides manifest.
"MY_SESSION_MANIFEST": "false", // From the manifest, overrides session env.
"MY_SESSION": "true", // From the session.
"PATH": scriptBinDir + string(filepath.ListSeparator),
} {
t.Run(k, func(t *testing.T) {
echoEnv(t, stdin, k)
// Windows is unreliable, so keep scanning until we find a match.
for s.Scan() {
got := strings.TrimSpace(s.Text())
t.Logf("%s=%s", k, got)
if strings.Contains(got, partialV) {
break
}
}
if err := s.Err(); !errors.Is(err, io.EOF) {
require.NoError(t, err)
}
})
}
}
func TestAgent_Session_SecretInjection(t *testing.T) {
t.Parallel()
manifest := agentsdk.Manifest{
EnvironmentVariables: map[string]string{
"SHOULD_BE_OVERRIDDEN": "manifest-value",
},
}
secrets := []agentsdk.WorkspaceSecret{
{EnvName: "MY_SECRET_ENV", Value: []byte("env-secret-value")},
{FilePath: "/tmp/secret-file", Value: []byte("file-secret-content")},
{EnvName: "BOTH_ENV", FilePath: "/tmp/both-file", Value: []byte("both-value")},
{EnvName: "SHOULD_BE_OVERRIDDEN", Value: []byte("secret-wins")},
}
ctx := testutil.Context(t, testutil.WaitLong)
//nolint:dogsled
conn, _, _, fs, _ := setupAgentWithSecrets(t, manifest, secrets, 0)
// Verify file injection via the agent's filesystem.
content, err := afero.ReadFile(fs, "/tmp/secret-file")
require.NoError(t, err)
require.Equal(t, "file-secret-content", string(content))
content, err = afero.ReadFile(fs, "/tmp/both-file")
require.NoError(t, err)
require.Equal(t, "both-value", string(content))
// Verify env var injection via an SSH session.
sshClient, err := conn.SSHClient(ctx)
require.NoError(t, err)
t.Cleanup(func() { _ = sshClient.Close() })
session, err := sshClient.NewSession()
require.NoError(t, err)
t.Cleanup(func() { _ = session.Close() })
command := "sh"
if runtime.GOOS == "windows" {
command = "cmd.exe"
}
stdin, err := session.StdinPipe()
require.NoError(t, err)
defer stdin.Close()
stdout, err := session.StdoutPipe()
require.NoError(t, err)
err = session.Start(command)
require.NoError(t, err)
go func() {
<-ctx.Done()
_ = session.Close()
}()
s := bufio.NewScanner(stdout)
echoEnv := func(t *testing.T, w io.Writer, env string) {
t.Helper()
if runtime.GOOS == "windows" {
_, err := fmt.Fprintf(w, "echo %%%s%%\r\n", env)
require.NoError(t, err)
} else {
_, err := fmt.Fprintf(w, "echo $%s\n", env)
require.NoError(t, err)
}
}
for k, partialV := range map[string]string{
"MY_SECRET_ENV": "env-secret-value",
"BOTH_ENV": "both-value",
"SHOULD_BE_OVERRIDDEN": "secret-wins",
} {
echoEnv(t, stdin, k)
found := false
for s.Scan() {
got := strings.TrimSpace(s.Text())
t.Logf("%s=%s", k, got)
if strings.Contains(got, partialV) {
found = true
break
}
}
require.True(t, found, "env %s not found in output", k)
if err := s.Err(); !errors.Is(err, io.EOF) {
require.NoError(t, err)
}
}
}
func TestAgent_StartupScript_SecretInjection(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
t.Skip("startup script test uses sh syntax")
}
tmpDir := t.TempDir()
secretFilePath := filepath.Join(tmpDir, "secret-file")
envProofPath := filepath.Join(tmpDir, "env-proof")
fileProofPath := filepath.Join(tmpDir, "file-proof")
// The startup script reads the secret env var and the secret file,
// writing both to proof files so we can verify they were available
// at script execution time.
script := fmt.Sprintf(
"echo \"$MY_STARTUP_SECRET\" > %s && cat %s > %s",
envProofPath, secretFilePath, fileProofPath,
)
manifest := agentsdk.Manifest{
Scripts: []codersdk.WorkspaceAgentScript{{
Script: script,
Timeout: 30 * time.Second,
RunOnStart: true,
}},
}
secrets := []agentsdk.WorkspaceSecret{
{EnvName: "MY_STARTUP_SECRET", Value: []byte("startup-env-value")},
{FilePath: secretFilePath, Value: []byte("startup-file-content")},
}
// Use the real OS filesystem so that both writeSecretFiles and
// the startup script operate on the same filesystem.
//nolint:dogsled
_, client, _, _, _ := setupAgentWithSecrets(t, manifest, secrets, 0, func(_ *agenttest.Client, opts *agent.Options) {
opts.Filesystem = afero.NewOsFs()
})
// Wait for the startup script to complete.
var got []codersdk.WorkspaceAgentLifecycle
assert.Eventually(t, func() bool {
got = client.GetLifecycleStates()
return len(got) > 0 && got[len(got)-1] == codersdk.WorkspaceAgentLifecycleReady
}, testutil.WaitLong, testutil.IntervalMedium)
require.Contains(t, got, codersdk.WorkspaceAgentLifecycleReady, "agent never reached ready")
// Verify the startup script could read the secret env var.
envProof, err := os.ReadFile(envProofPath)
require.NoError(t, err)
require.Equal(t, "startup-env-value", strings.TrimSpace(string(envProof)))
// Verify the startup script could read the secret file.
fileProof, err := os.ReadFile(fileProofPath)
require.NoError(t, err)
require.Equal(t, "startup-file-content", string(fileProof))
}
func TestAgent_GitSSH(t *testing.T) {
t.Parallel()
session := setupSSHSession(t, agentsdk.Manifest{}, codersdk.ServiceBannerConfig{}, nil)
command := "sh -c 'echo $GIT_SSH_COMMAND'"
if runtime.GOOS == "windows" {
command = "cmd.exe /c echo %GIT_SSH_COMMAND%"
}
output, err := session.Output(command)
require.NoError(t, err)
require.True(t, strings.HasSuffix(strings.TrimSpace(string(output)), "gitssh --"))
}
func TestAgent_SessionTTYShell(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
// This might be our implementation, or ConPTY itself.
// It's difficult to find extensive tests for it, so
// it seems like it could be either.
t.Skip("ConPTY appears to be inconsistent on Windows.")
}
for _, port := range sshPorts {
t.Run(fmt.Sprintf("(%d)", port), func(t *testing.T) {
t.Parallel()
ctx := testutil.Context(t, testutil.WaitMedium)
session := setupSSHSessionOnPort(t, agentsdk.Manifest{}, codersdk.ServiceBannerConfig{}, nil, port)
command := "sh"
if runtime.GOOS == "windows" {
command = "cmd.exe"
}
err := session.RequestPty("xterm", 128, 128, ssh.TerminalModes{})
require.NoError(t, err)
ptty := ptytest.New(t)
session.Stdout = ptty.Output()
session.Stderr = ptty.Output()
session.Stdin = ptty.Input()
err = session.Start(command)
require.NoError(t, err)
_ = ptty.Peek(ctx, 1) // wait for the prompt
ptty.WriteLine("echo test")
ptty.ExpectMatch(ctx, "test")
ptty.WriteLine("exit")
err = session.Wait()
require.NoError(t, err)
})
}
}
func TestAgent_SessionTTYExitCode(t *testing.T) {
t.Parallel()
session := setupSSHSession(t, agentsdk.Manifest{}, codersdk.ServiceBannerConfig{}, nil)
command := "areallynotrealcommand"
err := session.RequestPty("xterm", 128, 128, ssh.TerminalModes{})
require.NoError(t, err)
ptty := ptytest.New(t)
session.Stdout = ptty.Output()
session.Stderr = ptty.Output()
session.Stdin = ptty.Input()
err = session.Start(command)
require.NoError(t, err)
err = session.Wait()
exitErr := &ssh.ExitError{}
require.True(t, xerrors.As(err, &exitErr))
if runtime.GOOS == "windows" {
assert.Equal(t, 1, exitErr.ExitStatus())
} else {
assert.Equal(t, 127, exitErr.ExitStatus())
}
}
func TestAgent_Session_TTY_MOTD(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
// This might be our implementation, or ConPTY itself.
// It's difficult to find extensive tests for it, so
// it seems like it could be either.
t.Skip("ConPTY appears to be inconsistent on Windows.")
}
u, err := user.Current()
require.NoError(t, err, "get current user")
name := filepath.Join(u.HomeDir, "motd")
wantMOTD := "Welcome to your Coder workspace!"
wantServiceBanner := "Service banner text goes here"
tests := []struct {
name string
manifest agentsdk.Manifest
banner codersdk.ServiceBannerConfig
expected []string
unexpected []string
expectedRe *regexp.Regexp
}{
{
name: "WithoutServiceBanner",
manifest: agentsdk.Manifest{MOTDFile: name},
banner: codersdk.ServiceBannerConfig{},
expected: []string{wantMOTD},
unexpected: []string{wantServiceBanner},
},
{
name: "WithServiceBanner",
manifest: agentsdk.Manifest{MOTDFile: name},
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: wantServiceBanner,
},
expected: []string{wantMOTD, wantServiceBanner},
},
{
name: "ServiceBannerDisabled",
manifest: agentsdk.Manifest{MOTDFile: name},
banner: codersdk.ServiceBannerConfig{
Enabled: false,
Message: wantServiceBanner,
},
expected: []string{wantMOTD},
unexpected: []string{wantServiceBanner},
},
{
name: "ServiceBannerOnly",
manifest: agentsdk.Manifest{},
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: wantServiceBanner,
},
expected: []string{wantServiceBanner},
unexpected: []string{wantMOTD},
},
{
name: "None",
manifest: agentsdk.Manifest{},
banner: codersdk.ServiceBannerConfig{},
unexpected: []string{wantServiceBanner, wantMOTD},
},
{
name: "CarriageReturns",
manifest: agentsdk.Manifest{},
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: "service\n\nbanner\nhere",
},
expected: []string{"service\r\n\r\nbanner\r\nhere\r\n\r\n"},
unexpected: []string{},
},
{
name: "Trim",
// Enable motd since it will be printed after the banner,
// this ensures that we can test for an exact mount of
// newlines.
manifest: agentsdk.Manifest{
MOTDFile: name,
},
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: "\n\n\n\n\n\nbanner\n\n\n\n\n\n",
},
expectedRe: regexp.MustCompile(`([^\n\r]|^)banner\r\n\r\n[^\r\n]`),
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
t.Parallel()
session := setupSSHSession(t, test.manifest, test.banner, func(fs afero.Fs) {
err := fs.MkdirAll(filepath.Dir(name), 0o700)
require.NoError(t, err)
err = afero.WriteFile(fs, name, []byte(wantMOTD), 0o600)
require.NoError(t, err)
})
testSessionOutput(t, session, test.expected, test.unexpected, test.expectedRe)
})
}
}
//nolint:tparallel // Sub tests need to run sequentially.
func TestAgent_Session_TTY_MOTD_Update(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
// This might be our implementation, or ConPTY itself.
// It's difficult to find extensive tests for it, so
// it seems like it could be either.
t.Skip("ConPTY appears to be inconsistent on Windows.")
}
// Only the banner updates dynamically; the MOTD file does not.
wantServiceBanner := "Service banner text goes here"
tests := []struct {
banner codersdk.ServiceBannerConfig
expected []string
unexpected []string
}{
{
banner: codersdk.ServiceBannerConfig{},
expected: []string{},
unexpected: []string{wantServiceBanner},
},
{
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: wantServiceBanner,
},
expected: []string{wantServiceBanner},
},
{
banner: codersdk.ServiceBannerConfig{
Enabled: false,
Message: wantServiceBanner,
},
expected: []string{},
unexpected: []string{wantServiceBanner},
},
{
banner: codersdk.ServiceBannerConfig{
Enabled: true,
Message: wantServiceBanner,
},
expected: []string{wantServiceBanner},
unexpected: []string{},
},
{
banner: codersdk.ServiceBannerConfig{},
unexpected: []string{wantServiceBanner},
},
}
setSBInterval := func(_ *agenttest.Client, opts *agent.Options) {
opts.ServiceBannerRefreshInterval = testutil.IntervalFast
}
//nolint:dogsled // Allow the blank identifiers.
conn, client, _, _, _ := setupAgent(t, agentsdk.Manifest{}, 0, setSBInterval)
ctx, cancel := context.WithTimeout(context.Background(), testutil.WaitLong)
defer cancel()
//nolint:paralleltest // These tests need to swap the banner func.
for _, port := range sshPorts {
sshClient, err := conn.SSHClientOnPort(ctx, port)
require.NoError(t, err)
t.Cleanup(func() {
_ = sshClient.Close()
})
for i, test := range tests {
t.Run(fmt.Sprintf("(:%d)/%d", port, i), func(t *testing.T) {
// Set new banner func and wait for the agent to call it to update the
// banner. We wait for two calls to ensure the value has been stored:
// the second call can only begin after the first iteration of
// fetchServiceBannerLoop completes (call + store), so after
// receiving two signals at least one store has happened.
ready := make(chan struct{}, 2)
client.SetAnnouncementBannersFunc(func() ([]codersdk.BannerConfig, error) {
select {
case ready <- struct{}{}:
default:
}
return []codersdk.BannerConfig{test.banner}, nil
})
testutil.TryReceive(ctx, t, ready)
testutil.TryReceive(ctx, t, ready)
session, err := sshClient.NewSession()
require.NoError(t, err)
t.Cleanup(func() {
_ = session.Close()
})
testSessionOutput(t, session, test.expected, test.unexpected, nil)
})
}
}
}
//nolint:paralleltest // This test sets an environment variable.
func TestAgent_Session_TTY_QuietLogin(t *testing.T) {
if runtime.GOOS == "windows" {
// This might be our implementation, or ConPTY itself.
// It's difficult to find extensive tests for it, so
// it seems like it could be either.
t.Skip("ConPTY appears to be inconsistent on Windows.")
}
wantNotMOTD := "Welcome to your Coder workspace!"
wantServiceBanner := "Service banner text goes here"
u, err := user.Current()
require.NoError(t, err, "get current user")
motdPath := filepath.Join(u.HomeDir, "motd")
hushloginPath := filepath.Join(u.HomeDir, ".hushlogin")
// Neither banner nor MOTD should show if not a login shell.
t.Run("NotLogin", func(t *testing.T) {
session := setupSSHSession(t, agentsdk.Manifest{
MOTDFile: motdPath,
}, codersdk.ServiceBannerConfig{
Enabled: true,
Message: wantServiceBanner,
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