Add support for setupapi.SetupDiEnumDeviceInfo()

Signed-off-by: Simon Rozman <simon@rozman.si>

4 files changed, 83 insertions, 18 deletions

diff --git a/setupapi/setupapi_windows.go b/setupapi/setupapi_windows.go
index 31a0bff..dad0967 100644
--- a/setupapi/setupapi_windows.go
+++ b/setupapi/setupapi_windows.go
@@ -14,7 +14,8 @@ import (
 
 //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
+//sys	setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailData *_SP_DEVINFO_LIST_DETAIL_DATA) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
+//sys	setupDiEnumDeviceInfo(DeviceInfoSet DevInfo, MemberIndex uint32, DeviceInfoData *_SP_DEVINFO_DATA) (err error) = setupapi.SetupDiEnumDeviceInfo
 
 // 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) {
@@ -37,7 +38,7 @@ func SetupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator string, hwndParen
 
 // SetupDiGetDeviceInfoListDetail function retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
 func SetupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo) (data *DevInfoListDetailData, err error) {
-	var _p0 SP_DEVINFO_LIST_DETAIL_DATA
+	var _p0 _SP_DEVINFO_LIST_DETAIL_DATA
 	_p0.Size = uint32(unsafe.Sizeof(_p0))
 
 	err = setupDiGetDeviceInfoListDetail(DeviceInfoSet, &_p0)
@@ -52,3 +53,20 @@ func SetupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo) (data *DevInfoListDet
 	}
 	return
 }
+
+// SetupDiEnumDeviceInfo function returns a SP_DEVINFO_DATA structure that specifies a device information element in a device information set.
+func SetupDiEnumDeviceInfo(DeviceInfoSet DevInfo, MemberIndex int) (data *DevInfoData, err error) {
+	var _p0 _SP_DEVINFO_DATA
+	_p0.Size = uint32(unsafe.Sizeof(_p0))
+
+	err = setupDiEnumDeviceInfo(DeviceInfoSet, uint32(MemberIndex), &_p0)
+	if err != nil {
+		return
+	}
+
+	data = &DevInfoData{
+		ClassGUID: _p0.ClassGUID,
+		DevInst:   _p0.DevInst,
+	}
+	return
+}
diff --git a/setupapi/setupapi_windows_test.go b/setupapi/setupapi_windows_test.go
index 017fc3d..8aa7221 100644
--- a/setupapi/setupapi_windows_test.go
+++ b/setupapi/setupapi_windows_test.go
@@ -12,7 +12,7 @@ import (
 	"golang.org/x/sys/windows"
 )
 
-var guidDeviceClassNet = windows.GUID{0x4d36e972, 0xe325, 0x11ce, [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
+var deviceClassNetGUID = windows.GUID{0x4d36e972, 0xe325, 0x11ce, [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
 var computerName string
 
 func init() {
@@ -20,16 +20,16 @@ func init() {
 }
 
 func TestSetupDiGetClassDevsEx(t *testing.T) {
-	dev_info_list, err := SetupDiGetClassDevsEx(&guidDeviceClassNet, "PCI", 0, DIGCF_PRESENT, DevInfo(0), computerName)
+	devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "PCI", 0, DIGCF_PRESENT, DevInfo(0), computerName)
 	if err == nil {
-		dev_info_list.Close()
+		devInfoList.Close()
 	} else {
 		t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
 	}
 
-	dev_info_list, err = SetupDiGetClassDevsEx(nil, "", 0, DIGCF_PRESENT, DevInfo(0), "")
+	devInfoList, err = SetupDiGetClassDevsEx(nil, "", 0, DIGCF_PRESENT, DevInfo(0), "")
 	if err == nil {
-		dev_info_list.Close()
+		devInfoList.Close()
 		t.Errorf("SetupDiGetClassDevsEx(nil, ...) should fail")
 	} else {
 		if errWin, ok := err.(syscall.Errno); !ok || errWin != 87 /*ERROR_INVALID_PARAMETER*/ {
@@ -39,18 +39,18 @@ func TestSetupDiGetClassDevsEx(t *testing.T) {
 }
 
 func TestSetupDiGetDeviceInfoListDetailLocal(t *testing.T) {
-	dev_info_list, err := SetupDiGetClassDevsEx(&guidDeviceClassNet, "", 0, DIGCF_PRESENT, DevInfo(0), "")
+	devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
 	if err != nil {
 		t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
 	}
-	defer SetupDiDestroyDeviceInfoList(dev_info_list)
+	defer SetupDiDestroyDeviceInfoList(devInfoList)
 
-	data, err := SetupDiGetDeviceInfoListDetail(dev_info_list)
+	data, err := SetupDiGetDeviceInfoListDetail(devInfoList)
 	if err != nil {
 		t.Errorf("Error calling SetupDiGetDeviceInfoListDetail: %s", err.Error())
 	}
 
-	if data.ClassGUID != guidDeviceClassNet {
+	if data.ClassGUID != deviceClassNetGUID {
 		t.Error("SetupDiGetDeviceInfoListDetail returned different class GUID")
 	}
 
@@ -64,18 +64,18 @@ func TestSetupDiGetDeviceInfoListDetailLocal(t *testing.T) {
 }
 
 func TestSetupDiGetDeviceInfoListDetailRemote(t *testing.T) {
-	dev_info_list, err := SetupDiGetClassDevsEx(&guidDeviceClassNet, "", 0, DIGCF_PRESENT, DevInfo(0), computerName)
+	devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), computerName)
 	if err != nil {
 		t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
 	}
-	defer SetupDiDestroyDeviceInfoList(dev_info_list)
+	defer SetupDiDestroyDeviceInfoList(devInfoList)
 
-	data, err := SetupDiGetDeviceInfoListDetail(dev_info_list)
+	data, err := SetupDiGetDeviceInfoListDetail(devInfoList)
 	if err != nil {
 		t.Errorf("Error calling SetupDiGetDeviceInfoListDetail: %s", err.Error())
 	}
 
-	if data.ClassGUID != guidDeviceClassNet {
+	if data.ClassGUID != deviceClassNetGUID {
 		t.Error("SetupDiGetDeviceInfoListDetail returned different class GUID")
 	}
 
@@ -87,3 +87,25 @@ func TestSetupDiGetDeviceInfoListDetailRemote(t *testing.T) {
 		t.Error("SetupDiGetDeviceInfoListDetail returned different remote machine name")
 	}
 }
+
+func TestSetupDiEnumDeviceInfo(t *testing.T) {
+	devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
+	if err != nil {
+		t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
+	}
+	defer SetupDiDestroyDeviceInfoList(devInfoList)
+
+	for i := 0; true; i++ {
+		data, err := SetupDiEnumDeviceInfo(devInfoList, i)
+		if err != nil {
+			if errWin, ok := err.(syscall.Errno); ok && errWin == 259 /*ERROR_NO_MORE_ITEMS*/ {
+				break
+			}
+			continue
+		}
+
+		if data.ClassGUID != deviceClassNetGUID {
+			t.Error("SetupDiEnumDeviceInfo returned different class GUID")
+		}
+	}
+}
diff --git a/setupapi/types_windows.go b/setupapi/types_windows.go
index a5bda6d..e94d112 100644
--- a/setupapi/types_windows.go
+++ b/setupapi/types_windows.go
@@ -37,8 +37,7 @@ const (
 	SP_MAX_MACHINENAME_LENGTH = windows.MAX_PATH + 3
 )
 
-// SP_DEVINFO_LIST_DETAIL_DATA is a structure for detailed information on a device information set (used for SetupDiGetDeviceInfoListDetail which supercedes the functionality of SetupDiGetDeviceInfoListClass).
-type SP_DEVINFO_LIST_DETAIL_DATA struct {
+type _SP_DEVINFO_LIST_DETAIL_DATA struct {
 	Size                uint32
 	ClassGUID           windows.GUID
 	RemoteMachineHandle windows.Handle
@@ -51,3 +50,16 @@ type DevInfoListDetailData struct {
 	RemoteMachineHandle windows.Handle
 	RemoteMachineName   string
 }
+
+type _SP_DEVINFO_DATA struct {
+	Size      uint32
+	ClassGUID windows.GUID
+	DevInst   uint32 // DEVINST handle
+	_         uintptr
+}
+
+// DevInfoData is a device information structure (references a device instance that is a member of a device information set)
+type DevInfoData struct {
+	ClassGUID windows.GUID
+	DevInst   uint32 // DEVINST handle
+}
diff --git a/setupapi/zsetupapi_windows.go b/setupapi/zsetupapi_windows.go
index 47f5464..0896d45 100644
--- a/setupapi/zsetupapi_windows.go
+++ b/setupapi/zsetupapi_windows.go
@@ -42,6 +42,7 @@ var (
 	procSetupDiGetClassDevsExW          = modsetupapi.NewProc("SetupDiGetClassDevsExW")
 	procSetupDiDestroyDeviceInfoList    = modsetupapi.NewProc("SetupDiDestroyDeviceInfoList")
 	procSetupDiGetDeviceInfoListDetailW = modsetupapi.NewProc("SetupDiGetDeviceInfoListDetailW")
+	procSetupDiEnumDeviceInfo           = modsetupapi.NewProc("SetupDiEnumDeviceInfo")
 )
 
 func setupDiGetClassDevsEx(ClassGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, DeviceInfoSet DevInfo, MachineName *uint16, reserved uintptr) (handle DevInfo, err error) {
@@ -69,7 +70,7 @@ func SetupDiDestroyDeviceInfoList(DeviceInfoSet DevInfo) (err error) {
 	return
 }
 
-func setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailData *SP_DEVINFO_LIST_DETAIL_DATA) (err error) {
+func setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailData *_SP_DEVINFO_LIST_DETAIL_DATA) (err error) {
 	r1, _, e1 := syscall.Syscall(procSetupDiGetDeviceInfoListDetailW.Addr(), 2, uintptr(DeviceInfoSet), uintptr(unsafe.Pointer(DeviceInfoSetDetailData)), 0)
 	if r1 == 0 {
 		if e1 != 0 {
@@ -80,3 +81,15 @@ func setupDiGetDeviceInfoListDetail(DeviceInfoSet DevInfo, DeviceInfoSetDetailDa
 	}
 	return
 }
+
+func setupDiEnumDeviceInfo(DeviceInfoSet DevInfo, MemberIndex uint32, DeviceInfoData *_SP_DEVINFO_DATA) (err error) {
+	r1, _, e1 := syscall.Syscall(procSetupDiEnumDeviceInfo.Addr(), 3, uintptr(DeviceInfoSet), uintptr(MemberIndex), uintptr(unsafe.Pointer(DeviceInfoData)))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}