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fmouse.asm
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fmouse.asm
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;/*
;* fmouse.asm
;*
;* Virtual Device Driver that sends fake
;* mouse movements to the VMOUSE driver
;* to feign a mouse motion
;*
;* date: Nov., 28 2000
;* (C) Adrian Glaubitz
;*/
.386p ; yes, we wanna use 386 protected mode instructions
INCLUDE Vmm.inc
INCLUDE Vmd.inc
WM_MOVEMOUSE Equ 0FFEH
WM_SETMOUSE Equ 0FFFH
; virtual device declaration
Declare_Virtual_Device FMOUSE, 4, 0, FMouse_Control, Undefined_Device_ID
VxD_LOCKED_DATA_SEG
InputBfAdress dd 0
CurrentX dd 0
CurrentY dd 0
ButtonStatus db 0
VxD_LOCKED_DATA_ENDS
VxD_LOCKED_CODE_SEG
BeginProc FMouse_Control
Control_Dispatch SYS_DYNAMIC_DEVICE_INIT, FMouse_Dynamic_Init
Control_Dispatch SYS_DYNAMIC_DEVICE_EXIT, FMouse_Dynamic_Exit
Control_Dispatch W32_DEVICEIOCONTROL, FMouse_DeviceIOControl
clc
ret
EndProc FMouse_Control
; W32_DEVICEIOCONTROL message handler
BeginProc FMouse_DeviceIOControl
; load DIOCParams.dwIoControl into EAX
mov eax, [esi + 12]
; jump corresponding to the dwIOControl member
mov edx, [esi + 16]
mov [InputBfAdress], edx
cmp eax, DIOC_OPEN
jz short DeviceIOControlOpen
cmp eax, DIOC_CLOSEHANDLE
jz short DeviceIOControlCloseHandle
cmp eax, WM_MOVEMOUSE
jz short MoveMouse
cmp eax, WM_SETMOUSE
jz short SetMouse
DeviceIOControlDone:
clc
ret
DeviceIOControlOpen:
; must return 0 in EAX
xor eax, eax
jmp short DeviceIOControlDone
DeviceIOControlCloseHandle:
; must return VXD_SUCCESS in EAX
mov eax, VXD_SUCCESS
jmp short DeviceIOControlDone
; it is very likely that it's not needed to check the coordinates
; whether they exceed a special bounding, is it ?
MoveMouse:
VxDcall VMD_Get_Version ; is this the fixed version of vmouse ?
cmp ax, 400h
jb short DeviceIOControlDone
mov edx, [InputBfAdress]
mov eax, [edx] ; DWORD PTR [[esi + 16]]
add [CurrentX], eax
mov eax, [edx + 4] ; DWORD PTR [[esi + 16] + 4]
add [CurrentY], eax
mov [ButtonStatus], 0
; prepare them for call
mov esi, [CurrentX]
mov edi, [CurrentY]
mov al, [ButtonStatus]
; post them to VMOUSE
VxDcall VMD_Post_Absolute_Pointer_Message
jmp short DeviceIOControlDone
SetMouse:
; set values
; sorry for the mass of mov's, but if i use
; "mov DeltaX, [esi + 16]" i get an A2023
VxDcall VMD_Get_Version ; is this the fixed version of vmouse ?
cmp ax, 400h
jb short DeviceIOControlDone
mov edx, [InputBfAdress]
mov eax, [edx] ; DWORD PTR [[esi + 16]]
mov [CurrentX], eax
mov eax, [edx + 4] ; DWORD PTR [[esi + 16] + 4]
mov [CurrentY], eax
mov al, [edx + 8] ; BYTE PTR [[esi + 16] + 8]
mov [ButtonStatus], al
; prepare them for call
mov esi, [CurrentX]
mov edi, [CurrentY]
mov al, [ButtonStatus]
; post them to VMOUSE
VxDcall VMD_Post_Absolute_Pointer_Message
jmp DeviceIOControlDone
EndProc FMouse_DeviceIOControl
; SYS_DYNAMIC_DEVICE_EXIT message handler
BeginProc FMouse_Dynamic_Exit
mov eax, 1
clc
ret
EndProc FMouse_Dynamic_Exit
VxD_LOCKED_CODE_ENDS
VxD_ICODE_SEG
; SYS_DYNAMIC_DEVICE_INIT message handler
BeginProc FMouse_Dynamic_Init
mov eax, 1
clc
ret
EndProc FMouse_Dynamic_Init
VxD_ICODE_ENDS
END