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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package service
import (
"encoding/gob"
"errors"
"golang.zx2c4.com/wireguard/windows/conf"
"net/rpc"
"os"
)
type Tunnel struct {
Name string
}
type TunnelState int
const (
TunnelUnknown TunnelState = iota
TunnelStarted
TunnelStopped
TunnelStarting
TunnelStopping
)
type NotificationType int
const (
TunnelChangeNotificationType NotificationType = iota
TunnelsChangeNotificationType
)
var rpcClient *rpc.Client
type TunnelChangeCallback struct {
cb func(tunnel *Tunnel, state TunnelState, err error)
}
var tunnelChangeCallbacks = make(map[*TunnelChangeCallback]bool)
type TunnelsChangeCallback struct {
cb func()
}
var tunnelsChangeCallbacks = make(map[*TunnelsChangeCallback]bool)
func InitializeIPCClient(reader *os.File, writer *os.File, events *os.File) {
rpcClient = rpc.NewClient(&pipeRWC{reader, writer})
go func() {
decoder := gob.NewDecoder(events)
for {
var notificationType NotificationType
err := decoder.Decode(¬ificationType)
if err != nil {
return
}
switch notificationType {
case TunnelChangeNotificationType:
var tunnel string
err := decoder.Decode(&tunnel)
if err != nil || len(tunnel) == 0 {
continue
}
var state TunnelState
err = decoder.Decode(&state)
if err != nil {
continue
}
var errStr string
err = decoder.Decode(&errStr)
if err != nil {
continue
}
var retErr error
if len(errStr) > 0 {
retErr = errors.New(errStr)
}
if state == TunnelUnknown {
continue
}
t := &Tunnel{tunnel}
for cb := range tunnelChangeCallbacks {
cb.cb(t, state, retErr)
}
case TunnelsChangeNotificationType:
for cb := range tunnelsChangeCallbacks {
cb.cb()
}
}
}
}()
}
func (t *Tunnel) StoredConfig() (c conf.Config, err error) {
err = rpcClient.Call("ManagerService.StoredConfig", t.Name, &c)
return
}
func (t *Tunnel) RuntimeConfig() (c conf.Config, err error) {
err = rpcClient.Call("ManagerService.RuntimeConfig", t.Name, &c)
return
}
func (t *Tunnel) Start() error {
return rpcClient.Call("ManagerService.Start", t.Name, nil)
}
func (t *Tunnel) Stop() error {
return rpcClient.Call("ManagerService.Stop", t.Name, nil)
}
func (t *Tunnel) WaitForStop() error {
return rpcClient.Call("ManagerService.WaitForStop", t.Name, nil)
}
func (t *Tunnel) Delete() error {
return rpcClient.Call("ManagerService.Delete", t.Name, nil)
}
func (t *Tunnel) State() (TunnelState, error) {
var state TunnelState
return state, rpcClient.Call("ManagerService.State", t.Name, &state)
}
func IPCClientNewTunnel(conf *conf.Config) (Tunnel, error) {
var tunnel Tunnel
return tunnel, rpcClient.Call("ManagerService.Create", *conf, &tunnel)
}
func IPCClientTunnels() ([]Tunnel, error) {
var tunnels []Tunnel
return tunnels, rpcClient.Call("ManagerService.Tunnels", uintptr(0), &tunnels)
}
func IPCClientQuit(stopTunnelsOnQuit bool) (bool, error) {
var alreadyQuit bool
return alreadyQuit, rpcClient.Call("ManagerService.Quit", stopTunnelsOnQuit, &alreadyQuit)
}
func IPCClientRegisterTunnelChange(cb func(tunnel *Tunnel, state TunnelState, err error)) *TunnelChangeCallback {
s := &TunnelChangeCallback{cb}
tunnelChangeCallbacks[s] = true
return s
}
func (cb *TunnelChangeCallback) Unregister() {
delete(tunnelChangeCallbacks, cb)
}
func IPCClientRegisterTunnelsChange(cb func()) *TunnelsChangeCallback {
s := &TunnelsChangeCallback{cb}
tunnelsChangeCallbacks[s] = true
return s
}
func (cb *TunnelsChangeCallback) Unregister() {
delete(tunnelsChangeCallbacks, cb)
}
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