service: introduce base of services

1 files changed, 196 insertions, 0 deletions

diff --git a/service/install.go b/service/install.go
new file mode 100644
index 00000000..32131f94
--- /dev/null
+++ b/service/install.go
@@ -0,0 +1,196 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
+ */
+
+package service
+
+import (
+	"errors"
+	"golang.org/x/sys/windows"
+	"golang.org/x/sys/windows/svc"
+	svcdbg "golang.org/x/sys/windows/svc/debug"
+	"golang.org/x/sys/windows/svc/mgr"
+	"golang.zx2c4.com/wireguard/windows/conf"
+	"os"
+	"time"
+)
+
+var cachedServiceManager *mgr.Mgr
+
+func serviceManager() (*mgr.Mgr, error) {
+	if cachedServiceManager != nil {
+		return cachedServiceManager, nil
+	}
+	m, err := mgr.Connect()
+	if err != nil {
+		return nil, err
+	}
+	cachedServiceManager = m
+	return cachedServiceManager, nil
+}
+
+func InstallManager() error {
+	m, err := serviceManager()
+	if err != nil {
+		return err
+	}
+	path, err := os.Executable()
+	if err != nil {
+		return nil
+	}
+
+	//TODO: Do we want to bail if executable isn't being run from the right location?
+
+	serviceName := "WireGuard Manager"
+	service, err := m.OpenService(serviceName)
+	if err == nil {
+		status, err := service.Query()
+		if err != nil {
+			service.Close()
+			return err
+		}
+		if status.State != svc.Stopped {
+			service.Close()
+			return errors.New("Manager already installed and running")
+		}
+		err = service.Delete()
+		service.Close()
+		if err != nil {
+			return err
+		}
+		for {
+			service, err = m.OpenService(serviceName)
+			if err != nil {
+				break
+			}
+			service.Close()
+			time.Sleep(time.Second)
+		}
+	}
+
+	config := mgr.Config{
+		ServiceType:  windows.SERVICE_WIN32_OWN_PROCESS,
+		StartType:    mgr.StartAutomatic,
+		ErrorControl: mgr.ErrorNormal,
+		DisplayName:  serviceName,
+	}
+
+	service, err = m.CreateService(serviceName, path, config, "/managerservice")
+	if err != nil {
+		return err
+	}
+	service.Start()
+	return service.Close()
+}
+
+func UninstallManager() error {
+	m, err := serviceManager()
+	if err != nil {
+		return err
+	}
+	serviceName := "WireGuard Manager"
+	service, err := m.OpenService(serviceName)
+	if err != nil {
+		return err
+	}
+	service.Control(svc.Stop)
+	err = service.Delete()
+	err2 := service.Close()
+	if err != nil {
+		return err
+	}
+	return err2
+}
+
+func RunManager() error {
+	return svc.Run("WireGuard Manager", &managerService{})
+}
+
+func InstallTunnel(configPath string) error {
+	m, err := serviceManager()
+	if err != nil {
+		return err
+	}
+	path, err := os.Executable()
+	if err != nil {
+		return nil
+	}
+
+	name, err := conf.NameFromPath(configPath)
+	if err != nil {
+		return err
+	}
+
+	serviceName := "WireGuard Tunnel: " + name
+	service, err := m.OpenService(serviceName)
+	if err == nil {
+		status, err := service.Query()
+		if err != nil {
+			service.Close()
+			return err
+		}
+		if status.State != svc.Stopped {
+			service.Close()
+			return errors.New("Tunnel already installed and running")
+		}
+		err = service.Delete()
+		service.Close()
+		if err != nil {
+			return err
+		}
+		for {
+			service, err = m.OpenService(serviceName)
+			if err != nil {
+				break
+			}
+			service.Close()
+			time.Sleep(time.Second)
+		}
+	}
+
+	config := mgr.Config{
+		ServiceType:  windows.SERVICE_WIN32_OWN_PROCESS,
+		StartType:    mgr.StartAutomatic,
+		ErrorControl: mgr.ErrorNormal,
+		DisplayName:  serviceName,
+	}
+
+	service, err = m.CreateService(serviceName, path, config, "/tunnelservice", configPath)
+	if err != nil {
+		return err
+	}
+	service.Start()
+	return service.Close()
+}
+
+func UninstallTunnel(name string) error {
+	m, err := serviceManager()
+	if err != nil {
+		return err
+	}
+	serviceName := "WireGuard Tunnel: " + name
+	service, err := m.OpenService(serviceName)
+	if err != nil {
+		return err
+	}
+	service.Control(svc.Stop)
+	err = service.Delete()
+	err2 := service.Close()
+	if err != nil {
+		return err
+	}
+	return err2
+}
+
+func RunTunnel(confPath string, debug bool) error {
+	name, err := conf.NameFromPath(confPath)
+	if err != nil {
+		return err
+	}
+	if debug {
+		return svcdbg.Run("WireGuard Tunnel: "+name, &tunnelService{confPath, true})
+	} else {
+		return svc.Run("WireGuard Tunnel: "+name, &tunnelService{confPath, false})
+	}
+}