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Add support for setupapi.SetupDiClassGuidsFromNameEx()

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-02-04 09:36:42 +01:00 committed by Jason A. Donenfeld
parent f81882ee8b
commit 348b4e9f7c
3 changed files with 75 additions and 0 deletions
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37
setupapi/setupapi_windows.go
View File

@ -14,6 +14,7 @@ import (
)
//sys setupDiClassNameFromGuidEx(ClassGUID *windows.GUID, ClassName *uint16, ClassNameSize uint32, RequiredSize *uint32, MachineName *uint16, Reserved uintptr) (err error) = setupapi.SetupDiClassNameFromGuidExW
//sys setupDiClassGuidsFromNameEx(ClassName *uint16, ClassGuidList *windows.GUID, ClassGuidListSize uint32, RequiredSize *uint32, MachineName *uint16, Reserved uintptr) (err error) = setupapi.SetupDiClassGuidsFromNameExW
//sys setupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiGetClassDevsExW
//sys SetupDiDestroyDeviceInfoList(DeviceInfoSet DevInfo) (err error) = setupapi.SetupDiDestroyDeviceInfoList
//sys setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailData *_SP_DEVINFO_LIST_DETAIL_DATA) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
@ -46,6 +47,42 @@ func SetupDiClassNameFromGuidEx(ClassGUID *windows.GUID, MachineName string) (Cl
return
}
// SetupDiClassGuidsFromNameEx function retrieves the GUIDs associated with the specified class name. This resulting list contains the classes currently installed on a local or remote computer.
func SetupDiClassGuidsFromNameEx(ClassName string, MachineName string) (ClassGuidList []windows.GUID, err error) {
_p0, err := syscall.UTF16PtrFromString(ClassName)
if err != nil {
return
}
var _p1 [4]windows.GUID
var _p1reqSize uint32
var _p2 *uint16
if MachineName != "" {
_p2, err = syscall.UTF16PtrFromString(MachineName)
if err != nil {
return
}
}
err = setupDiClassGuidsFromNameEx(_p0, &_p1[0], 4, &_p1reqSize, _p2, 0)
if err == nil {
// The GUID array was sufficiently big. Return its slice.
return _p1[:_p1reqSize], nil
}
if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
// The GUID array was too small. Now that we got the required size, create another one big enough and retry.
_p1 := make([]windows.GUID, _p1reqSize)
err = setupDiClassGuidsFromNameEx(_p0, &_p1[0], _p1reqSize, &_p1reqSize, _p2, 0)
if err == nil {
return _p1[:_p1reqSize], nil
}
}
return
}
// SetupDiGetClassDevsEx function returns a handle to a device information set that contains requested device information elements for a local or a remote computer.
func SetupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator string, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName string) (handle DevInfo, err error) {
var _p0 *uint16

25
setupapi/setupapi_windows_test.go
View File

@ -45,6 +45,31 @@ func TestSetupDiClassNameFromGuidEx(t *testing.T) {
}
}
func TestSetupDiClassGuidsFromNameEx(t *testing.T) {
ClassGUIDs, err := SetupDiClassGuidsFromNameEx("Net", "")
if err != nil {
t.Errorf("Error calling SetupDiClassGuidsFromNameEx: %s", err.Error())
} else {
found := false
for i := range ClassGUIDs {
if ClassGUIDs[i] == deviceClassNetGUID {
found = true
break
}
}
if !found {
t.Errorf("SetupDiClassGuidsFromNameEx(\"Net\") should return %x", deviceClassNetGUID)
}
}
ClassGUIDs, err = SetupDiClassGuidsFromNameEx("foobar-34274a51-a6e6-45f0-80d6-c62be96dd5fe", computerName)
if err != nil {
t.Errorf("Error calling SetupDiClassGuidsFromNameEx: %s", err.Error())
} else if len(ClassGUIDs) != 0 {
t.Errorf("SetupDiClassGuidsFromNameEx(\"foobar-34274a51-a6e6-45f0-80d6-c62be96dd5fe\") should return an empty GUID set")
}
}
func TestSetupDiGetClassDevsEx(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "PCI", 0, DIGCF_PRESENT, DevInfo(0), computerName)
if err == nil {

13
setupapi/zsetupapi_windows.go
View File

@ -40,6 +40,7 @@ var (
modsetupapi = windows.NewLazySystemDLL("setupapi.dll")
procSetupDiClassNameFromGuidExW = modsetupapi.NewProc("SetupDiClassNameFromGuidExW")
procSetupDiClassGuidsFromNameExW = modsetupapi.NewProc("SetupDiClassGuidsFromNameExW")
procSetupDiGetClassDevsExW = modsetupapi.NewProc("SetupDiGetClassDevsExW")
procSetupDiDestroyDeviceInfoList = modsetupapi.NewProc("SetupDiDestroyDeviceInfoList")
procSetupDiGetDeviceInfoListDetailW = modsetupapi.NewProc("SetupDiGetDeviceInfoListDetailW")
@ -64,6 +65,18 @@ func setupDiClassNameFromGuidEx(ClassGUID *windows.GUID, ClassName *uint16, Clas
return
}
func setupDiClassGuidsFromNameEx(ClassName *uint16, ClassGuidList *windows.GUID, ClassGuidListSize uint32, RequiredSize *uint32, MachineName *uint16, Reserved uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiClassGuidsFromNameExW.Addr(), 6, uintptr(unsafe.Pointer(ClassName)), uintptr(unsafe.Pointer(ClassGuidList)), uintptr(ClassGuidListSize), uintptr(unsafe.Pointer(RequiredSize)), uintptr(unsafe.Pointer(MachineName)), uintptr(Reserved))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName *uint16, reserved uintptr) (handle DevInfo, err error) {
r0, _, e1 := syscall.Syscall9(procSetupDiGetClassDevsExW.Addr(), 7, uintptr(unsafe.Pointer(ClassGUID)), uintptr(unsafe.Pointer(Enumerator)), uintptr(hwndParent), uintptr(Flags), uintptr(DeviceInfoSet), uintptr(unsafe.Pointer(MachineName)), uintptr(reserved), 0, 0)
handle = DevInfo(r0)