func (vb *VirtualBox) Init() error {
if C.VBoxCGlueInit() != 0 {
message := fmt.Sprintf("VBoxCGlueInit failed: %v", C.g_szVBoxErrMsg)
log.Println(message)
return errors.New(message)
}
//unsigned ver = g_pVBoxFuncs->pfnGetVersion();
//printf("VirtualBox version: %u.%u.%u\n", ver / 1000000, ver / 1000 % 1000, ver % 1000);
//ver = g_pVBoxFuncs->pfnGetAPIVersion();
//printf("VirtualBox API version: %u.%u\n", ver / 1000, ver % 1000);
C.ClientInitialize(&vb.vboxclient)
if vb.vboxclient == nil {
message := fmt.Sprintf("Could not get vboxclient reference")
log.Println(message)
return errors.New(message)
}
var rc C.HRESULT = C.GetVirtualBox(vb.vboxclient, &vb.vbox)
if C.MY_FAILED(rc) != 0 || vb.vbox == nil {
message := fmt.Sprintf("Could not get vbox reference")
log.Println(message)
return errors.New(message)
}
rc = C.GetSession(vb.vboxclient, &vb.session)
if C.MY_FAILED(rc) != 0 || vb.session == nil {
message := fmt.Sprintf("Could not get session reference")
log.Println(message)
return errors.New(message)
}
return nil
}
func (vm *VirtualMachine) GetScreenshot() (*image.NRGBA, error) {
if !vm.locked {
message := fmt.Sprintf("Machine not locked, can't take screenshot")
log.Println(message)
return nil, errors.New(message)
}
width := C.uint(0)
height := C.uint(0)
bitsPerPixel := C.uint(0)
//TODO: is vm.Display threadsafe?
var rc C.HRESULT = C.GetScreenResolution(vm.Display, &width, &height, &bitsPerPixel)
if C.MY_FAILED(rc) != 0 {
message := fmt.Sprintf("Failed to get screen resolution")
log.Println(message)
return nil, errors.New(message)
}
//var imageData [int(width)*(height)*4]char
var imageDataSize C.PRUint32
var imageData *C.PRUint8
defer C.free(unsafe.Pointer(imageData))
rc = C.TakeScreenShotPNGToArray(vm.Display, width, height, &imageDataSize, &imageData)
if C.MY_FAILED(rc) != 0 {
message := fmt.Sprintf("Failed to get screen shot data")
log.Println(message)
return nil, errors.New(message)
}
// convert data to a go byte array
dataSize := int(imageDataSize)
dataBytes := C.GoBytes(unsafe.Pointer(imageData), C.int(dataSize))
reader := bytes.NewReader(dataBytes)
imgUnknown, err := png.Decode(reader) //this guy is probably RGBA
if err != nil {
message := fmt.Sprintf("Failed to decode image from png raw data", err)
log.Println(message)
return nil, err
}
// copy the image into NRGBA format. This is wasteful (TODO?)
b := imgUnknown.Bounds()
imgNRGBA := image.NewNRGBA(image.Rect(0, 0, b.Dx(), b.Dy()))
draw.Draw(imgNRGBA, imgNRGBA.Bounds(), imgUnknown, b.Min, draw.Src)
return imgNRGBA, nil
}
// I guess this one expects the vm to be active already, the other possibility would be "LaunchVMProcess"
func (vm *VirtualMachine) LockMachine() error {
var rc C.HRESULT = C.LockMachine(vm.Machine, vm.Session)
if C.MY_FAILED(rc) != 0 {
vm.locked = false
message := fmt.Sprintf("Could not lock machine")
log.Println(message)
return errors.New(message)
}
vm.locked = true
rc = C.GetConsole(vm.Session, &vm.Console)
if C.MY_FAILED(rc) != 0 || vm.Console == nil {
vm.UnlockMachine()
message := fmt.Sprintf("Could not get console reference")
log.Println(message)
return errors.New(message)
}
rc = C.GetMouse(vm.Console, &vm.Mouse)
if C.MY_FAILED(rc) != 0 || vm.Mouse == nil {
vm.UnlockMachine()
message := fmt.Sprintf("Could not get mouse reference")
log.Println(message)
return errors.New(message)
}
rc = C.GetKeyboard(vm.Console, &vm.Keyboard)
if C.MY_FAILED(rc) != 0 || vm.Keyboard == nil {
vm.UnlockMachine()
message := fmt.Sprintf("Could not get keyboard reference")
log.Println(message)
return errors.New(message)
}
rc = C.GetDisplay(vm.Console, &vm.Display)
if C.MY_FAILED(rc) != 0 || vm.Display == nil {
vm.UnlockMachine()
message := fmt.Sprintf("Could not get display reference")
log.Println(message)
return errors.New(message)
}
return nil
}
func (vm *VirtualMachine) UnlockMachine() error {
var rc C.HRESULT = C.UnlockMachine(vm.Session)
if C.MY_FAILED(rc) != 0 {
message := fmt.Sprintf("Could not unlock machine")
log.Println(message)
return errors.New(message)
}
vm.locked = false
return nil
}
//state should be one of MOUSE_EVENT_...
func (vm *VirtualMachine) MouseEvent(x, y, state int) error {
if !vm.locked {
message := fmt.Sprintf("Machine not locked, can't perform mouse down")
log.Println(message)
return errors.New(message)
}
var rc C.HRESULT = C.MouseClickEvent(vm.Mouse, C.int(x), C.int(y), C.int(state))
if C.MY_FAILED(rc) != 0 {
message := fmt.Sprintf("Failed to perform mouse down")
log.Println(message)
return errors.New(message)
}
return nil
}
// TODO: name is actually nameOrId
func (vb *VirtualBox) ConnectToMachine(name string) (*VirtualMachine, error) {
var machine *C.IMachine
cs := C.CString(name)
defer C.free(unsafe.Pointer(cs))
var rc C.HRESULT = C.FindMachine(vb.vbox, cs, &machine)
if C.MY_FAILED(rc) != 0 || machine == nil {
if machine != nil {
defer C.free(unsafe.Pointer(machine))
}
message := fmt.Sprintf("Could not get machine reference")
log.Println(message)
return nil, errors.New(message)
}
vm := new(VirtualMachine)
vm.Machine = machine
vm.Name = name
vm.Session = vb.session
vm.locked = false
return vm, nil
}