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File: //opt/go/pkg/mod/golang.org/x/[email protected]/windows/svc/mgr/mgr_test.go
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build windows

package mgr_test

import (
	"fmt"
	"os"
	"path/filepath"
	"sort"
	"strings"
	"syscall"
	"testing"
	"time"

	"golang.org/x/sys/windows"
	"golang.org/x/sys/windows/svc"
	"golang.org/x/sys/windows/svc/mgr"
)

func TestOpenLanManServer(t *testing.T) {
	m, err := mgr.Connect()
	if err != nil {
		if errno, ok := err.(syscall.Errno); ok && errno == syscall.ERROR_ACCESS_DENIED {
			t.Skip("Skipping test: we don't have rights to manage services.")
		}
		t.Fatalf("SCM connection failed: %s", err)
	}
	defer m.Disconnect()

	s, err := m.OpenService("LanmanServer")
	if err != nil {
		t.Fatalf("OpenService(lanmanserver) failed: %s", err)
	}
	defer s.Close()

	_, err = s.Config()
	if err != nil {
		t.Fatalf("Config failed: %s", err)
	}
}

func install(t *testing.T, m *mgr.Mgr, name, exepath string, c mgr.Config) {
	// Sometimes it takes a while for the service to get
	// removed after previous test run.
	for i := 0; ; i++ {
		s, err := m.OpenService(name)
		if err != nil {
			break
		}
		s.Close()

		if i > 10 {
			t.Fatalf("service %s already exists", name)
		}
		time.Sleep(300 * time.Millisecond)
	}

	s, err := m.CreateService(name, exepath, c)
	if err != nil {
		t.Fatalf("CreateService(%s) failed: %v", name, err)
	}
	defer s.Close()
}

func depString(d []string) string {
	if len(d) == 0 {
		return ""
	}
	for i := range d {
		d[i] = strings.ToLower(d[i])
	}
	ss := sort.StringSlice(d)
	ss.Sort()
	return strings.Join([]string(ss), " ")
}

func testConfig(t *testing.T, s *mgr.Service, should mgr.Config) mgr.Config {
	is, err := s.Config()
	if err != nil {
		t.Fatalf("Config failed: %s", err)
	}
	if should.DelayedAutoStart != is.DelayedAutoStart {
		t.Fatalf("config mismatch: DelayedAutoStart is %v, but should have %v", is.DelayedAutoStart, should.DelayedAutoStart)
	}
	if should.DisplayName != is.DisplayName {
		t.Fatalf("config mismatch: DisplayName is %q, but should have %q", is.DisplayName, should.DisplayName)
	}
	if should.StartType != is.StartType {
		t.Fatalf("config mismatch: StartType is %v, but should have %v", is.StartType, should.StartType)
	}
	if should.Description != is.Description {
		t.Fatalf("config mismatch: Description is %q, but should have %q", is.Description, should.Description)
	}
	if depString(should.Dependencies) != depString(is.Dependencies) {
		t.Fatalf("config mismatch: Dependencies is %v, but should have %v", is.Dependencies, should.Dependencies)
	}
	return is
}

func testRecoveryActions(t *testing.T, s *mgr.Service, should []mgr.RecoveryAction) {
	is, err := s.RecoveryActions()
	if err != nil {
		t.Fatalf("RecoveryActions failed: %s", err)
	}
	if len(should) != len(is) {
		t.Errorf("recovery action mismatch: contains %v actions, but should have %v", len(is), len(should))
	}
	for i := range is {
		if should[i].Type != is[i].Type {
			t.Errorf("recovery action mismatch: Type is %v, but should have %v", is[i].Type, should[i].Type)
		}
		if should[i].Delay != is[i].Delay {
			t.Errorf("recovery action mismatch: Delay is %v, but should have %v", is[i].Delay, should[i].Delay)
		}
	}
}

func testResetPeriod(t *testing.T, s *mgr.Service, should uint32) {
	is, err := s.ResetPeriod()
	if err != nil {
		t.Fatalf("ResetPeriod failed: %s", err)
	}
	if should != is {
		t.Errorf("reset period mismatch: reset period is %v, but should have %v", is, should)
	}
}

func testSetRecoveryActions(t *testing.T, s *mgr.Service) {
	r := []mgr.RecoveryAction{
		{
			Type:  mgr.NoAction,
			Delay: 60000 * time.Millisecond,
		},
		{
			Type:  mgr.ServiceRestart,
			Delay: 4 * time.Minute,
		},
		{
			Type:  mgr.ServiceRestart,
			Delay: time.Minute,
		},
		{
			Type:  mgr.RunCommand,
			Delay: 4000 * time.Millisecond,
		},
	}

	// 4 recovery actions with reset period
	err := s.SetRecoveryActions(r, uint32(10000))
	if err != nil {
		t.Fatalf("SetRecoveryActions failed: %v", err)
	}
	testRecoveryActions(t, s, r)
	testResetPeriod(t, s, uint32(10000))

	// Infinite reset period
	err = s.SetRecoveryActions(r, syscall.INFINITE)
	if err != nil {
		t.Fatalf("SetRecoveryActions failed: %v", err)
	}
	testRecoveryActions(t, s, r)
	testResetPeriod(t, s, syscall.INFINITE)

	// nil recovery actions
	err = s.SetRecoveryActions(nil, 0)
	if err.Error() != "recoveryActions cannot be nil" {
		t.Fatalf("SetRecoveryActions failed with unexpected error message of %q", err)
	}

	// Delete all recovery actions and reset period
	err = s.ResetRecoveryActions()
	if err != nil {
		t.Fatalf("ResetRecoveryActions failed: %v", err)
	}
	testRecoveryActions(t, s, nil)
	testResetPeriod(t, s, 0)
}

func testRebootMessage(t *testing.T, s *mgr.Service, should string) {
	err := s.SetRebootMessage(should)
	if err != nil {
		t.Fatalf("SetRebootMessage failed: %v", err)
	}
	is, err := s.RebootMessage()
	if err != nil {
		t.Fatalf("RebootMessage failed: %v", err)
	}
	if should != is {
		t.Errorf("reboot message mismatch: message is %q, but should have %q", is, should)
	}
}

func testRecoveryCommand(t *testing.T, s *mgr.Service, should string) {
	err := s.SetRecoveryCommand(should)
	if err != nil {
		t.Fatalf("SetRecoveryCommand failed: %v", err)
	}
	is, err := s.RecoveryCommand()
	if err != nil {
		t.Fatalf("RecoveryCommand failed: %v", err)
	}
	if should != is {
		t.Errorf("recovery command mismatch: command is %q, but should have %q", is, should)
	}
}

func testRecoveryActionsOnNonCrashFailures(t *testing.T, s *mgr.Service, should bool) {
	err := s.SetRecoveryActionsOnNonCrashFailures(should)
	if err != nil {
		t.Fatalf("SetRecoveryActionsOnNonCrashFailures failed: %v", err)
	}
	is, err := s.RecoveryActionsOnNonCrashFailures()
	if err != nil {
		t.Fatalf("RecoveryActionsOnNonCrashFailures failed: %v", err)
	}
	if should != is {
		t.Errorf("RecoveryActionsOnNonCrashFailures mismatch: flag is %v, but should have %v", is, should)
	}
}

func testMultipleRecoverySettings(t *testing.T, s *mgr.Service, rebootMsgShould, recoveryCmdShould string, actionsFlagShould bool) {
	err := s.SetRebootMessage(rebootMsgShould)
	if err != nil {
		t.Fatalf("SetRebootMessage failed: %v", err)
	}
	err = s.SetRecoveryActionsOnNonCrashFailures(actionsFlagShould)
	if err != nil {
		t.Fatalf("SetRecoveryActionsOnNonCrashFailures failed: %v", err)
	}
	err = s.SetRecoveryCommand(recoveryCmdShould)
	if err != nil {
		t.Fatalf("SetRecoveryCommand failed: %v", err)
	}

	rebootMsgIs, err := s.RebootMessage()
	if err != nil {
		t.Fatalf("RebootMessage failed: %v", err)
	}
	if rebootMsgShould != rebootMsgIs {
		t.Errorf("reboot message mismatch: message is %q, but should have %q", rebootMsgIs, rebootMsgShould)
	}
	recoveryCommandIs, err := s.RecoveryCommand()
	if err != nil {
		t.Fatalf("RecoveryCommand failed: %v", err)
	}
	if recoveryCmdShould != recoveryCommandIs {
		t.Errorf("recovery command mismatch: command is %q, but should have %q", recoveryCommandIs, recoveryCmdShould)
	}
	actionsFlagIs, err := s.RecoveryActionsOnNonCrashFailures()
	if err != nil {
		t.Fatalf("RecoveryActionsOnNonCrashFailures failed: %v", err)
	}
	if actionsFlagShould != actionsFlagIs {
		t.Errorf("RecoveryActionsOnNonCrashFailures mismatch: flag is %v, but should have %v", actionsFlagIs, actionsFlagShould)
	}
}

func testControl(t *testing.T, s *mgr.Service, c svc.Cmd, expectedErr error, expectedStatus svc.Status) {
	status, err := s.Control(c)
	if err != expectedErr {
		t.Fatalf("Unexpected return from s.Control: %v (expected %v)", err, expectedErr)
	}
	if expectedStatus != status {
		t.Fatalf("Unexpected status from s.Control: %+v (expected %+v)", status, expectedStatus)
	}
}

func remove(t *testing.T, s *mgr.Service) {
	err := s.Delete()
	if err != nil {
		t.Fatalf("Delete failed: %s", err)
	}
}

func TestMyService(t *testing.T) {
	if os.Getenv("GO_BUILDER_NAME") == "" {
		// Don't install services on arbitrary users' machines.
		t.Skip("skipping test that modifies system services: GO_BUILDER_NAME not set")
	}
	if testing.Short() {
		t.Skip("skipping test in short mode that modifies system services")
	}

	const name = "mgrtestservice"

	m, err := mgr.Connect()
	if err != nil {
		t.Fatalf("SCM connection failed: %s", err)
	}
	defer m.Disconnect()

	c := mgr.Config{
		StartType:    mgr.StartDisabled,
		DisplayName:  "x-sys mgr test service",
		Description:  "x-sys mgr test service is just a test",
		Dependencies: []string{"LanmanServer", "W32Time"},
	}

	exename := os.Args[0]
	exepath, err := filepath.Abs(exename)
	if err != nil {
		t.Fatalf("filepath.Abs(%s) failed: %s", exename, err)
	}

	install(t, m, name, exepath, c)

	s, err := m.OpenService(name)
	if err != nil {
		t.Fatalf("service %s is not installed", name)
	}
	defer s.Close()
	defer s.Delete()

	c.BinaryPathName = exepath
	c = testConfig(t, s, c)

	c.StartType = mgr.StartManual
	err = s.UpdateConfig(c)
	if err != nil {
		t.Fatalf("UpdateConfig failed: %v", err)
	}

	testConfig(t, s, c)

	c.StartType = mgr.StartAutomatic
	c.DelayedAutoStart = true
	err = s.UpdateConfig(c)
	if err != nil {
		t.Fatalf("UpdateConfig failed: %v", err)
	}

	testConfig(t, s, c)

	svcnames, err := m.ListServices()
	if err != nil {
		t.Fatalf("ListServices failed: %v", err)
	}
	var serviceIsInstalled bool
	for _, sn := range svcnames {
		if sn == name {
			serviceIsInstalled = true
			break
		}
	}
	if !serviceIsInstalled {
		t.Errorf("ListServices failed to find %q service", name)
	}

	testSetRecoveryActions(t, s)
	testRebootMessage(t, s, fmt.Sprintf("%s failed", name))
	testRebootMessage(t, s, "") // delete reboot message
	testRecoveryCommand(t, s, fmt.Sprintf("sc query %s", name))
	testRecoveryCommand(t, s, "") // delete recovery command
	testRecoveryActionsOnNonCrashFailures(t, s, true)
	testRecoveryActionsOnNonCrashFailures(t, s, false)
	testMultipleRecoverySettings(t, s, fmt.Sprintf("%s failed", name), fmt.Sprintf("sc query %s", name), true)

	expectedStatus := svc.Status{
		State: svc.Stopped,
	}
	testControl(t, s, svc.Stop, windows.ERROR_SERVICE_NOT_ACTIVE, expectedStatus)

	remove(t, s)
}

func TestListDependentServices(t *testing.T) {
	m, err := mgr.Connect()
	if err != nil {
		if errno, ok := err.(syscall.Errno); ok && errno == syscall.ERROR_ACCESS_DENIED {
			t.Skip("Skipping test: we don't have rights to manage services.")
		}
		t.Fatalf("SCM connection failed: %s", err)
	}
	defer m.Disconnect()

	baseServiceName := "testservice1"
	dependentServiceName := "testservice2"
	install(t, m, baseServiceName, "", mgr.Config{})
	baseService, err := m.OpenService(baseServiceName)
	if err != nil {
		t.Fatalf("OpenService failed: %v", err)
	}
	defer remove(t, baseService)
	install(t, m, dependentServiceName, "", mgr.Config{Dependencies: []string{baseServiceName}})
	dependentService, err := m.OpenService(dependentServiceName)
	if err != nil {
		t.Fatalf("OpenService failed: %v", err)
	}
	defer remove(t, dependentService)

	// test that both the base service and dependent service list the correct dependencies
	dependentServices, err := baseService.ListDependentServices(svc.AnyActivity)
	if err != nil {
		t.Fatalf("baseService.ListDependentServices failed: %v", err)
	}
	if len(dependentServices) != 1 || dependentServices[0] != dependentServiceName {
		t.Errorf("Found %v, instead of expected contents %s", dependentServices, dependentServiceName)
	}
	dependentServices, err = dependentService.ListDependentServices(svc.AnyActivity)
	if err != nil {
		t.Fatalf("dependentService.ListDependentServices failed: %v", err)
	}
	if len(dependentServices) != 0 {
		t.Errorf("Found %v, where no service should be listed", dependentService)
	}
}