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install.go
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install.go
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//go:build windows
package service
import (
"fmt"
"os"
"path/filepath"
"golang.org/x/sys/windows/svc/eventlog"
"golang.org/x/sys/windows/svc/mgr"
)
func servicePath() (string, error) {
p, err := exePath()
if err != nil {
return "", err
}
return filepath.Dir(p), nil
}
func exePath() (string, error) {
prog := os.Args[0]
p, err := filepath.Abs(prog)
if err != nil {
return "", err
}
fi, err := os.Stat(p)
if err == nil {
if !fi.Mode().IsDir() {
return p, nil
}
return "", fmt.Errorf("%s is directory", p)
}
if filepath.Ext(p) == "" {
p += ".exe"
fi, err := os.Stat(p)
if err == nil {
if !fi.Mode().IsDir() {
return p, nil
}
return "", fmt.Errorf("%s is directory", p)
}
}
return "", err
}
// InstallService installs a windows service
func InstallService(name, desc string) error {
exepath, err := exePath()
if err != nil {
return err
}
m, err := mgr.Connect()
if err != nil {
return err
}
// nolint: errcheck
defer m.Disconnect()
s, err := m.OpenService(name)
if err == nil {
s.Close()
return fmt.Errorf("service %s already exists", name)
}
config := mgr.Config{
DisplayName: name,
Description: desc,
StartType: mgr.StartAutomatic,
}
s, err = m.CreateService(name, exepath, config)
if err != nil {
return err
}
defer s.Close()
err = eventlog.InstallAsEventCreate(name, eventlog.Error|eventlog.Warning|eventlog.Info)
if err != nil {
// nolint: errcheck
s.Delete()
return fmt.Errorf("SetupEventLogSource() failed: %v", err)
}
return nil
}
// RemoveService removes a windows service
func RemoveService(name string) error {
m, err := mgr.Connect()
if err != nil {
return err
}
// nolint: errcheck
defer m.Disconnect()
s, err := m.OpenService(name)
if err != nil {
return fmt.Errorf("service %s is not installed", name)
}
defer s.Close()
err = s.Delete()
if err != nil {
return err
}
err = eventlog.Remove(name)
if err != nil {
return fmt.Errorf("RemoveEventLogSource() failed: %v", err)
}
return nil
}