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// Copyright 2010-2012 The W32 Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package w32
import (
"syscall"
"unsafe"
)
var (
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
procGetModuleHandle = modkernel32.NewProc("GetModuleHandleW")
procMulDiv = modkernel32.NewProc("MulDiv")
procGetConsoleWindow = modkernel32.NewProc("GetConsoleWindow")
procGetCurrentThread = modkernel32.NewProc("GetCurrentThread")
procGetLogicalDrives = modkernel32.NewProc("GetLogicalDrives")
procGetUserDefaultLCID = modkernel32.NewProc("GetUserDefaultLCID")
procLstrlen = modkernel32.NewProc("lstrlenW")
procLstrcpy = modkernel32.NewProc("lstrcpyW")
procGlobalAlloc = modkernel32.NewProc("GlobalAlloc")
procGlobalFree = modkernel32.NewProc("GlobalFree")
procGlobalLock = modkernel32.NewProc("GlobalLock")
procGlobalUnlock = modkernel32.NewProc("GlobalUnlock")
procMoveMemory = modkernel32.NewProc("RtlMoveMemory")
procFindResource = modkernel32.NewProc("FindResourceW")
procSizeofResource = modkernel32.NewProc("SizeofResource")
procLockResource = modkernel32.NewProc("LockResource")
procLoadResource = modkernel32.NewProc("LoadResource")
procGetLastError = modkernel32.NewProc("GetLastError")
// procOpenProcess = modkernel32.NewProc("OpenProcess")
// procTerminateProcess = modkernel32.NewProc("TerminateProcess")
procCloseHandle = modkernel32.NewProc("CloseHandle")
procCreateToolhelp32Snapshot = modkernel32.NewProc("CreateToolhelp32Snapshot")
procModule32First = modkernel32.NewProc("Module32FirstW")
procModule32Next = modkernel32.NewProc("Module32NextW")
procGetSystemTimes = modkernel32.NewProc("GetSystemTimes")
procGetConsoleScreenBufferInfo = modkernel32.NewProc("GetConsoleScreenBufferInfo")
procSetConsoleTextAttribute = modkernel32.NewProc("SetConsoleTextAttribute")
procGetDiskFreeSpaceEx = modkernel32.NewProc("GetDiskFreeSpaceExW")
procGetProcessTimes = modkernel32.NewProc("GetProcessTimes")
procSetSystemTime = modkernel32.NewProc("SetSystemTime")
procGetSystemTime = modkernel32.NewProc("GetSystemTime")
procVirtualAllocEx = modkernel32.NewProc("VirtualAllocEx")
procVirtualFreeEx = modkernel32.NewProc("VirtualFreeEx")
procWriteProcessMemory = modkernel32.NewProc("WriteProcessMemory")
procReadProcessMemory = modkernel32.NewProc("ReadProcessMemory")
procQueryPerformanceCounter = modkernel32.NewProc("QueryPerformanceCounter")
procQueryPerformanceFrequency = modkernel32.NewProc("QueryPerformanceFrequency")
)
func GetModuleHandle(modulename string) HINSTANCE {
var mn uintptr
if modulename == "" {
mn = 0
} else {
mn = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(modulename)))
}
ret, _, _ := procGetModuleHandle.Call(mn)
return HINSTANCE(ret)
}
func MulDiv(number, numerator, denominator int) int {
ret, _, _ := procMulDiv.Call(
uintptr(number),
uintptr(numerator),
uintptr(denominator))
return int(ret)
}
func GetConsoleWindow() HWND {
ret, _, _ := procGetConsoleWindow.Call()
return HWND(ret)
}
func GetCurrentThread() HANDLE {
ret, _, _ := procGetCurrentThread.Call()
return HANDLE(ret)
}
func GetLogicalDrives() uint32 {
ret, _, _ := procGetLogicalDrives.Call()
return uint32(ret)
}
func GetUserDefaultLCID() uint32 {
ret, _, _ := procGetUserDefaultLCID.Call()
return uint32(ret)
}
func Lstrlen(lpString *uint16) int {
ret, _, _ := procLstrlen.Call(uintptr(unsafe.Pointer(lpString)))
return int(ret)
}
func Lstrcpy(buf []uint16, lpString *uint16) {
procLstrcpy.Call(
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(lpString)))
}
func GlobalAlloc(uFlags uint, dwBytes uint32) HGLOBAL {
ret, _, _ := procGlobalAlloc.Call(
uintptr(uFlags),
uintptr(dwBytes))
if ret == 0 {
panic("GlobalAlloc failed")
}
return HGLOBAL(ret)
}
func GlobalFree(hMem HGLOBAL) {
ret, _, _ := procGlobalFree.Call(uintptr(hMem))
if ret != 0 {
panic("GlobalFree failed")
}
}
func GlobalLock(hMem HGLOBAL) unsafe.Pointer {
ret, _, _ := procGlobalLock.Call(uintptr(hMem))
if ret == 0 {
panic("GlobalLock failed")
}
return unsafe.Pointer(ret)
}
func GlobalUnlock(hMem HGLOBAL) bool {
ret, _, _ := procGlobalUnlock.Call(uintptr(hMem))
return ret != 0
}
func MoveMemory(destination, source unsafe.Pointer, length uint32) {
procMoveMemory.Call(
uintptr(unsafe.Pointer(destination)),
uintptr(source),
uintptr(length))
}
func FindResource(hModule HMODULE, lpName, lpType *uint16) (HRSRC, error) {
ret, _, _ := procFindResource.Call(
uintptr(hModule),
uintptr(unsafe.Pointer(lpName)),
uintptr(unsafe.Pointer(lpType)))
if ret == 0 {
return 0, syscall.GetLastError()
}
return HRSRC(ret), nil
}
func SizeofResource(hModule HMODULE, hResInfo HRSRC) uint32 {
ret, _, _ := procSizeofResource.Call(
uintptr(hModule),
uintptr(hResInfo))
if ret == 0 {
panic("SizeofResource failed")
}
return uint32(ret)
}
func LockResource(hResData HGLOBAL) unsafe.Pointer {
ret, _, _ := procLockResource.Call(uintptr(hResData))
if ret == 0 {
panic("LockResource failed")
}
return unsafe.Pointer(ret)
}
func LoadResource(hModule HMODULE, hResInfo HRSRC) HGLOBAL {
ret, _, _ := procLoadResource.Call(
uintptr(hModule),
uintptr(hResInfo))
if ret == 0 {
panic("LoadResource failed")
}
return HGLOBAL(ret)
}
func GetLastError() uint32 {
ret, _, _ := procGetLastError.Call()
return uint32(ret)
}
// func OpenProcess(desiredAccess uint32, inheritHandle bool, processId uint32) HANDLE {
// inherit := 0
// if inheritHandle {
// inherit = 1
// }
// ret, _, _ := procOpenProcess.Call(
// uintptr(desiredAccess),
// uintptr(inherit),
// uintptr(processId))
// return HANDLE(ret)
// }
// func TerminateProcess(hProcess HANDLE, uExitCode uint) bool {
// ret, _, _ := procTerminateProcess.Call(
// uintptr(hProcess),
// uintptr(uExitCode))
// return ret != 0
// }
func CloseHandle(object HANDLE) bool {
ret, _, _ := procCloseHandle.Call(
uintptr(object))
return ret != 0
}
func CreateToolhelp32Snapshot(flags, processId uint32) HANDLE {
ret, _, _ := procCreateToolhelp32Snapshot.Call(
uintptr(flags),
uintptr(processId))
if ret <= 0 {
return HANDLE(0)
}
return HANDLE(ret)
}
func Module32First(snapshot HANDLE, me *MODULEENTRY32) bool {
ret, _, _ := procModule32First.Call(
uintptr(snapshot),
uintptr(unsafe.Pointer(me)))
return ret != 0
}
func Module32Next(snapshot HANDLE, me *MODULEENTRY32) bool {
ret, _, _ := procModule32Next.Call(
uintptr(snapshot),
uintptr(unsafe.Pointer(me)))
return ret != 0
}
func GetSystemTimes(lpIdleTime, lpKernelTime, lpUserTime *FILETIME) bool {
ret, _, _ := procGetSystemTimes.Call(
uintptr(unsafe.Pointer(lpIdleTime)),
uintptr(unsafe.Pointer(lpKernelTime)),
uintptr(unsafe.Pointer(lpUserTime)))
return ret != 0
}
func GetProcessTimes(hProcess HANDLE, lpCreationTime, lpExitTime, lpKernelTime, lpUserTime *FILETIME) bool {
ret, _, _ := procGetProcessTimes.Call(
uintptr(hProcess),
uintptr(unsafe.Pointer(lpCreationTime)),
uintptr(unsafe.Pointer(lpExitTime)),
uintptr(unsafe.Pointer(lpKernelTime)),
uintptr(unsafe.Pointer(lpUserTime)))
return ret != 0
}
func GetConsoleScreenBufferInfo(hConsoleOutput HANDLE) *CONSOLE_SCREEN_BUFFER_INFO {
var csbi CONSOLE_SCREEN_BUFFER_INFO
ret, _, _ := procGetConsoleScreenBufferInfo.Call(
uintptr(hConsoleOutput),
uintptr(unsafe.Pointer(&csbi)))
if ret == 0 {
return nil
}
return &csbi
}
func SetConsoleTextAttribute(hConsoleOutput HANDLE, wAttributes uint16) bool {
ret, _, _ := procSetConsoleTextAttribute.Call(
uintptr(hConsoleOutput),
uintptr(wAttributes))
return ret != 0
}
func GetDiskFreeSpaceEx(dirName string) (r bool,
freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes uint64) {
ret, _, _ := procGetDiskFreeSpaceEx.Call(
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(dirName))),
uintptr(unsafe.Pointer(&freeBytesAvailable)),
uintptr(unsafe.Pointer(&totalNumberOfBytes)),
uintptr(unsafe.Pointer(&totalNumberOfFreeBytes)))
return ret != 0,
freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes
}
func GetSystemTime() *SYSTEMTIME {
var time SYSTEMTIME
procGetSystemTime.Call(
uintptr(unsafe.Pointer(&time)))
return &time
}
func SetSystemTime(time *SYSTEMTIME) bool {
ret, _, _ := procSetSystemTime.Call(
uintptr(unsafe.Pointer(time)))
return ret != 0
}
func VirtualAllocEx(hProcess HANDLE, lpAddress, dwSize uintptr, flAllocationType, flProtect uint32) uintptr {
ret, _, _ := procVirtualAllocEx.Call(
uintptr(hProcess),
lpAddress,
dwSize,
uintptr(flAllocationType),
uintptr(flProtect),
)
return ret
}
func VirtualFreeEx(hProcess HANDLE, lpAddress, dwSize uintptr, dwFreeType uint32) bool {
ret, _, _ := procVirtualFreeEx.Call(
uintptr(hProcess),
lpAddress,
dwSize,
uintptr(dwFreeType),
)
return ret != 0
}
func WriteProcessMemory(hProcess HANDLE, lpBaseAddress, lpBuffer, nSize uintptr) (int, bool) {
var nBytesWritten int
ret, _, _ := procWriteProcessMemory.Call(
uintptr(hProcess),
lpBaseAddress,
lpBuffer,
nSize,
uintptr(unsafe.Pointer(&nBytesWritten)),
)
return nBytesWritten, ret != 0
}
func ReadProcessMemory(hProcess HANDLE, lpBaseAddress, nSize uintptr) (lpBuffer []uint16, lpNumberOfBytesRead int, ok bool) {
var nBytesRead int
buf := make([]uint16, nSize)
ret, _, _ := procReadProcessMemory.Call(
uintptr(hProcess),
lpBaseAddress,
uintptr(unsafe.Pointer(&buf[0])),
nSize,
uintptr(unsafe.Pointer(&nBytesRead)),
)
return buf, nBytesRead, ret != 0
}
func QueryPerformanceCounter() uint64 {
result := uint64(0)
procQueryPerformanceCounter.Call(
uintptr(unsafe.Pointer(&result)),
)
return result
}
func QueryPerformanceFrequency() uint64 {
result := uint64(0)
procQueryPerformanceFrequency.Call(
uintptr(unsafe.Pointer(&result)),
)
return result
}
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