diff options
| -rw-r--r-- | setupapi/setupapi_windows.go | 37 | ||||
| -rw-r--r-- | setupapi/setupapi_windows_test.go | 25 | ||||
| -rw-r--r-- | setupapi/zsetupapi_windows.go | 13 |
3 files changed, 75 insertions, 0 deletions
diff --git a/setupapi/setupapi_windows.go b/setupapi/setupapi_windows.go index 6b138df..da9a437 100644 --- a/setupapi/setupapi_windows.go +++ b/setupapi/setupapi_windows.go @@ -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 diff --git a/setupapi/setupapi_windows_test.go b/setupapi/setupapi_windows_test.go index 4afd21a..5d84a39 100644 --- a/setupapi/setupapi_windows_test.go +++ b/setupapi/setupapi_windows_test.go @@ -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 { diff --git a/setupapi/zsetupapi_windows.go b/setupapi/zsetupapi_windows.go index 33d8fb0..324749f 100644 --- a/setupapi/zsetupapi_windows.go +++ b/setupapi/zsetupapi_windows.go @@ -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) |