telebit/internal/service/svc_windows.go

88 lines
1.5 KiB
Go

package service
import (
"errors"
"fmt"
"os"
"path/filepath"
"golang.org/x/sys/windows/svc/eventlog"
"golang.org/x/sys/windows/svc/mgr"
)
// Install ensures a windows service is active
func Install(name, desc string) error {
exepath, err := getExecPath(os.Args[0])
if err != nil {
return err
}
return install(name, desc, exepath)
}
func getExecPath(exepath string) (string, error) {
p, err := filepath.Abs(exepath)
if err != nil {
return "", err
}
fi, err := os.Stat(p)
if err == nil {
if fi.Mode().IsRegular() {
return p, nil
}
}
if 0 == len(filepath.Ext(p)) {
var err error
p += ".exe"
fi, err = os.Stat(p)
if nil != err {
return "", err
}
}
if !fi.Mode().IsRegular() {
// this should never happen
return "", errors.New("not a regular file")
}
return p, nil
}
func install(name, desc, exepath string) error {
m, err := mgr.Connect()
if nil != err {
return err
}
defer m.Disconnect()
s, err := m.OpenService(name)
if nil == err {
s.Close()
return nil
}
s, err = m.CreateService(name, exepath, mgr.Config{DisplayName: desc}, "is", "auto-started")
if err != nil {
return err
}
defer s.Close()
err = eventlog.InstallAsEventCreate(name, eventlog.Error|eventlog.Warning|eventlog.Info)
if nil != err {
s.Delete()
return fmt.Errorf("could not install system service: %v", err)
}
/*
//err = s.Start("is", "manual-started")
err = s.Start("is", "auto-started")
if err != nil {
return fmt.Errorf("could not start service: %v", err)
}
*/
return nil
}