mirror of
https://github.com/KusakabeShi/EtherGuard-VPN.git
synced 2024-12-13 17:40:44 +01:00
11f5780250
DIF_INSTALLDEVICE returns almost immediately, while the device
installation continues in the background. It might take a while, before
all registry keys and values are populated.
Previously, wireguard-go waited for HKLM\SYSTEM\CurrentControlSet\
Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}\<id> registry key
only.
Followed by a SetInterfaceName() method of Wintun struct which tried to
access HKLM\SYSTEM\CurrentControlSet\Control\Network\
{4D36E972-E325-11CE-BFC1-08002BE10318}\<id>\Connection registry key
might not be available yet.
This commit loops until both registry keys are available before
returning from CreateInterface() function.
Signed-off-by: Simon Rozman <simon@rozman.si>
488 lines
24 KiB
Go
488 lines
24 KiB
Go
/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
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*/
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package setupapi
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import (
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"encoding/binary"
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"errors"
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"fmt"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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"golang.org/x/sys/windows/registry"
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"golang.zx2c4.com/wireguard/tun/wintun/guid"
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)
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//sys setupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiCreateDeviceInfoListExW
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// SetupDiCreateDeviceInfoListEx function creates an empty device information set on a remote or a local computer and optionally associates the set with a device setup class.
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func SetupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName string) (deviceInfoSet DevInfo, err error) {
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var machineNameUTF16 *uint16
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if machineName != "" {
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machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
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if err != nil {
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return
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}
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}
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return setupDiCreateDeviceInfoListEx(classGUID, hwndParent, machineNameUTF16, 0)
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}
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//sys setupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo, deviceInfoSetDetailData *DevInfoListDetailData) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
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// SetupDiGetDeviceInfoListDetail function retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
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func SetupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo) (deviceInfoSetDetailData *DevInfoListDetailData, err error) {
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data := &DevInfoListDetailData{}
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data.size = uint32(unsafe.Sizeof(*data))
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return data, setupDiGetDeviceInfoListDetail(deviceInfoSet, data)
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}
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// GetDeviceInfoListDetail method retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
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func (deviceInfoSet DevInfo) GetDeviceInfoListDetail() (*DevInfoListDetailData, error) {
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return SetupDiGetDeviceInfoListDetail(deviceInfoSet)
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}
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//sys setupDiCreateDeviceInfo(deviceInfoSet DevInfo, DeviceName *uint16, classGUID *windows.GUID, DeviceDescription *uint16, hwndParent uintptr, CreationFlags DICD, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiCreateDeviceInfoW
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// SetupDiCreateDeviceInfo function creates a new device information element and adds it as a new member to the specified device information set.
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func SetupDiCreateDeviceInfo(deviceInfoSet DevInfo, deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (deviceInfoData *DevInfoData, err error) {
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deviceNameUTF16, err := syscall.UTF16PtrFromString(deviceName)
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if err != nil {
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return
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}
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var deviceDescriptionUTF16 *uint16
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if deviceDescription != "" {
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deviceDescriptionUTF16, err = syscall.UTF16PtrFromString(deviceDescription)
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if err != nil {
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return
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}
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}
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data := &DevInfoData{}
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data.size = uint32(unsafe.Sizeof(*data))
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return data, setupDiCreateDeviceInfo(deviceInfoSet, deviceNameUTF16, classGUID, deviceDescriptionUTF16, hwndParent, creationFlags, data)
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}
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// CreateDeviceInfo method creates a new device information element and adds it as a new member to the specified device information set.
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func (deviceInfoSet DevInfo) CreateDeviceInfo(deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (*DevInfoData, error) {
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return SetupDiCreateDeviceInfo(deviceInfoSet, deviceName, classGUID, deviceDescription, hwndParent, creationFlags)
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}
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//sys setupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex uint32, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiEnumDeviceInfo
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// SetupDiEnumDeviceInfo function returns a DevInfoData structure that specifies a device information element in a device information set.
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func SetupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex int) (*DevInfoData, error) {
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data := &DevInfoData{}
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data.size = uint32(unsafe.Sizeof(*data))
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return data, setupDiEnumDeviceInfo(deviceInfoSet, uint32(memberIndex), data)
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}
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// EnumDeviceInfo method returns a DevInfoData structure that specifies a device information element in a device information set.
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func (deviceInfoSet DevInfo) EnumDeviceInfo(memberIndex int) (*DevInfoData, error) {
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return SetupDiEnumDeviceInfo(deviceInfoSet, memberIndex)
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}
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// SetupDiDestroyDeviceInfoList function deletes a device information set and frees all associated memory.
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//sys SetupDiDestroyDeviceInfoList(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiDestroyDeviceInfoList
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// Close method deletes a device information set and frees all associated memory.
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func (deviceInfoSet DevInfo) Close() error {
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return SetupDiDestroyDeviceInfoList(deviceInfoSet)
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}
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//sys SetupDiBuildDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) = setupapi.SetupDiBuildDriverInfoList
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// BuildDriverInfoList method builds a list of drivers that is associated with a specific device or with the global class driver list for a device information set.
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func (deviceInfoSet DevInfo) BuildDriverInfoList(deviceInfoData *DevInfoData, driverType SPDIT) error {
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return SetupDiBuildDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
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}
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//sys SetupDiCancelDriverInfoSearch(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiCancelDriverInfoSearch
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// CancelDriverInfoSearch method cancels a driver list search that is currently in progress in a different thread.
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func (deviceInfoSet DevInfo) CancelDriverInfoSearch() error {
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return SetupDiCancelDriverInfoSearch(deviceInfoSet)
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}
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//sys setupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT, memberIndex uint32, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiEnumDriverInfoW
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// SetupDiEnumDriverInfo function enumerates the members of a driver list.
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func SetupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT, memberIndex int) (*DrvInfoData, error) {
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data := &DrvInfoData{}
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data.size = uint32(unsafe.Sizeof(*data))
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return data, setupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, uint32(memberIndex), data)
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}
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// EnumDriverInfo method enumerates the members of a driver list.
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func (deviceInfoSet DevInfo) EnumDriverInfo(deviceInfoData *DevInfoData, driverType SPDIT, memberIndex int) (*DrvInfoData, error) {
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return SetupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, memberIndex)
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}
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//sys setupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiGetSelectedDriverW
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// SetupDiGetSelectedDriver function retrieves the selected driver for a device information set or a particular device information element.
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func SetupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (*DrvInfoData, error) {
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data := &DrvInfoData{}
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data.size = uint32(unsafe.Sizeof(*data))
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return data, setupDiGetSelectedDriver(deviceInfoSet, deviceInfoData, data)
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}
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// GetSelectedDriver method retrieves the selected driver for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetSelectedDriver(deviceInfoData *DevInfoData) (*DrvInfoData, error) {
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return SetupDiGetSelectedDriver(deviceInfoSet, deviceInfoData)
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}
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//sys SetupDiSetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiSetSelectedDriverW
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// SetSelectedDriver method sets, or resets, the selected driver for a device information element or the selected class driver for a device information set.
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func (deviceInfoSet DevInfo) SetSelectedDriver(deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) error {
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return SetupDiSetSelectedDriver(deviceInfoSet, deviceInfoData, driverInfoData)
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}
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//sys setupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData, driverInfoDetailData *DrvInfoDetailData, driverInfoDetailDataSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDriverInfoDetailW
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// SetupDiGetDriverInfoDetail function retrieves driver information detail for a device information set or a particular device information element in the device information set.
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func SetupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (*DrvInfoDetailData, error) {
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const bufCapacity = 0x800
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buf := [bufCapacity]byte{}
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var bufLen uint32
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data := (*DrvInfoDetailData)(unsafe.Pointer(&buf[0]))
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data.size = uint32(unsafe.Sizeof(*data))
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err := setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, data, bufCapacity, &bufLen)
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if err == nil {
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// The buffer was was sufficiently big.
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data.size = bufLen
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return data, nil
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}
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if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
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// The buffer was too small. Now that we got the required size, create another one big enough and retry.
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buf := make([]byte, bufLen)
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data := (*DrvInfoDetailData)(unsafe.Pointer(&buf[0]))
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data.size = uint32(unsafe.Sizeof(*data))
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err = setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, data, bufLen, &bufLen)
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if err == nil {
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data.size = bufLen
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return data, nil
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}
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}
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return nil, err
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}
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// GetDriverInfoDetail method retrieves driver information detail for a device information set or a particular device information element in the device information set.
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func (deviceInfoSet DevInfo) GetDriverInfoDetail(deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (*DrvInfoDetailData, error) {
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return SetupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData)
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}
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//sys SetupDiDestroyDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) = setupapi.SetupDiDestroyDriverInfoList
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// DestroyDriverInfoList method deletes a driver list.
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func (deviceInfoSet DevInfo) DestroyDriverInfoList(deviceInfoData *DevInfoData, driverType SPDIT) error {
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return SetupDiDestroyDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
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}
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//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
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// SetupDiGetClassDevsEx function returns a handle to a device information set that contains requested device information elements for a local or a remote computer.
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func SetupDiGetClassDevsEx(classGUID *windows.GUID, enumerator string, hwndParent uintptr, flags DIGCF, deviceInfoSet DevInfo, machineName string) (handle DevInfo, err error) {
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var enumeratorUTF16 *uint16
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if enumerator != "" {
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enumeratorUTF16, err = syscall.UTF16PtrFromString(enumerator)
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if err != nil {
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return
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}
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}
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var machineNameUTF16 *uint16
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if machineName != "" {
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machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
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if err != nil {
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return
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}
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}
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return setupDiGetClassDevsEx(classGUID, enumeratorUTF16, hwndParent, flags, deviceInfoSet, machineNameUTF16, 0)
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}
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// SetupDiCallClassInstaller function calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
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//sys SetupDiCallClassInstaller(installFunction DI_FUNCTION, deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiCallClassInstaller
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// CallClassInstaller member calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
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func (deviceInfoSet DevInfo) CallClassInstaller(installFunction DI_FUNCTION, deviceInfoData *DevInfoData) error {
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return SetupDiCallClassInstaller(installFunction, deviceInfoSet, deviceInfoData)
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}
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//sys setupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (key windows.Handle, err error) [failretval==windows.InvalidHandle] = setupapi.SetupDiOpenDevRegKey
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// SetupDiOpenDevRegKey function opens a registry key for device-specific configuration information.
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func SetupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, scope DICS_FLAG, hwProfile uint32, keyType DIREG, samDesired uint32) (registry.Key, error) {
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handle, err := setupDiOpenDevRegKey(deviceInfoSet, deviceInfoData, scope, hwProfile, keyType, samDesired)
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return registry.Key(handle), err
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}
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// OpenDevRegKey method opens a registry key for device-specific configuration information.
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func (deviceInfoSet DevInfo) OpenDevRegKey(DeviceInfoData *DevInfoData, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (registry.Key, error) {
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return SetupDiOpenDevRegKey(deviceInfoSet, DeviceInfoData, Scope, HwProfile, KeyType, samDesired)
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}
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// GetInterfaceID method returns network interface ID.
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func (deviceInfoSet DevInfo) GetInterfaceID(deviceInfoData *DevInfoData) (*windows.GUID, error) {
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// Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\<class>\<id> registry key.
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key, err := deviceInfoSet.OpenDevRegKey(deviceInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DRV, registry.READ)
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if err != nil {
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return nil, errors.New("Device-specific registry key open failed: " + err.Error())
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}
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defer key.Close()
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// Read the NetCfgInstanceId value.
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value, valueType, err := key.GetStringValue("NetCfgInstanceId")
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if err != nil {
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return nil, errors.New("RegQueryStringValue(\"NetCfgInstanceId\") failed: " + err.Error())
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}
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if valueType != registry.SZ {
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return nil, fmt.Errorf("NetCfgInstanceId registry value is not REG_SZ (expected: %v, provided: %v)", registry.SZ, valueType)
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}
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// Convert to windows.GUID.
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ifid, err := guid.FromString(value)
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if err != nil {
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return nil, fmt.Errorf("NetCfgInstanceId registry value is not a GUID (expected: \"{...}\", provided: \"%v\")", value)
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}
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return ifid, nil
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}
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//sys setupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyRegDataType *uint32, propertyBuffer *byte, propertyBufferSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDeviceRegistryPropertyW
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// SetupDiGetDeviceRegistryProperty function retrieves a specified Plug and Play device property.
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func SetupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP) (value interface{}, err error) {
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buf := make([]byte, 0x100)
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var dataType, bufLen uint32
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err = setupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &dataType, &buf[0], uint32(cap(buf)), &bufLen)
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if err == nil {
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// The buffer was sufficiently big.
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return getRegistryValue(buf[:bufLen], dataType)
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}
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if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
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// The buffer was too small. Now that we got the required size, create another one big enough and retry.
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buf = make([]byte, bufLen)
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err = setupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &dataType, &buf[0], uint32(cap(buf)), &bufLen)
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if err == nil {
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return getRegistryValue(buf[:bufLen], dataType)
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}
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}
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return
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}
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func getRegistryValue(buf []byte, dataType uint32) (interface{}, error) {
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switch dataType {
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case windows.REG_SZ:
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return windows.UTF16ToString(BufToUTF16(buf)), nil
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case windows.REG_EXPAND_SZ:
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return registry.ExpandString(windows.UTF16ToString(BufToUTF16(buf)))
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case windows.REG_BINARY:
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return buf, nil
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case windows.REG_DWORD_LITTLE_ENDIAN:
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return binary.LittleEndian.Uint32(buf), nil
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case windows.REG_DWORD_BIG_ENDIAN:
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return binary.BigEndian.Uint32(buf), nil
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case windows.REG_MULTI_SZ:
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bufW := BufToUTF16(buf)
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a := []string{}
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for i := 0; i < len(bufW); {
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j := i + wcslen(bufW[i:])
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if i < j {
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a = append(a, windows.UTF16ToString(bufW[i:j]))
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}
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i = j + 1
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}
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return a, nil
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case windows.REG_QWORD_LITTLE_ENDIAN:
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return binary.LittleEndian.Uint64(buf), nil
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default:
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return nil, fmt.Errorf("Unsupported registry value type: %v", dataType)
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}
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}
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// BufToUTF16 function reinterprets []byte buffer as []uint16
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func BufToUTF16(buf []byte) []uint16 {
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sl := struct {
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addr *uint16
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len int
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cap int
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}{(*uint16)(unsafe.Pointer(&buf[0])), len(buf) / 2, cap(buf) / 2}
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return *(*[]uint16)(unsafe.Pointer(&sl))
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}
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// UTF16ToBuf function reinterprets []uint16 as []byte
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func UTF16ToBuf(buf []uint16) []byte {
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sl := struct {
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addr *byte
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len int
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cap int
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}{(*byte)(unsafe.Pointer(&buf[0])), len(buf) * 2, cap(buf) * 2}
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return *(*[]byte)(unsafe.Pointer(&sl))
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}
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func wcslen(str []uint16) int {
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for i := 0; i < len(str); i++ {
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if str[i] == 0 {
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return i
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}
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}
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return len(str)
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}
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// GetDeviceRegistryProperty method retrieves a specified Plug and Play device property.
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func (deviceInfoSet DevInfo) GetDeviceRegistryProperty(deviceInfoData *DevInfoData, property SPDRP) (interface{}, error) {
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return SetupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property)
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}
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//sys setupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyBuffer *byte, propertyBufferSize uint32) (err error) = setupapi.SetupDiSetDeviceRegistryPropertyW
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// SetupDiSetDeviceRegistryProperty function sets a Plug and Play device property for a device.
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func SetupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyBuffers []byte) error {
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return setupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &propertyBuffers[0], uint32(len(propertyBuffers)))
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}
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// SetDeviceRegistryProperty function sets a Plug and Play device property for a device.
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func (deviceInfoSet DevInfo) SetDeviceRegistryProperty(deviceInfoData *DevInfoData, property SPDRP, propertyBuffers []byte) error {
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return SetupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, propertyBuffers)
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}
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//sys setupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) = setupapi.SetupDiGetDeviceInstallParamsW
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// SetupDiGetDeviceInstallParams function retrieves device installation parameters for a device information set or a particular device information element.
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func SetupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (*DevInstallParams, error) {
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params := &DevInstallParams{}
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params.size = uint32(unsafe.Sizeof(*params))
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return params, setupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData, params)
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}
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// GetDeviceInstallParams method retrieves device installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetDeviceInstallParams(deviceInfoData *DevInfoData) (*DevInstallParams, error) {
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return SetupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData)
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}
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// SetupDiGetClassInstallParams function retrieves class installation parameters for a device information set or a particular device information element.
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//sys SetupDiGetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetClassInstallParamsW
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// GetClassInstallParams method retrieves class installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) GetClassInstallParams(deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32, requiredSize *uint32) error {
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return SetupDiGetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize, requiredSize)
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}
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//sys SetupDiSetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) = setupapi.SetupDiSetDeviceInstallParamsW
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// SetDeviceInstallParams member sets device installation parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) SetDeviceInstallParams(deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) error {
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return SetupDiSetDeviceInstallParams(deviceInfoSet, deviceInfoData, deviceInstallParams)
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}
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// SetupDiSetClassInstallParams function sets or clears class install parameters for a device information set or a particular device information element.
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//sys SetupDiSetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32) (err error) = setupapi.SetupDiSetClassInstallParamsW
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// SetClassInstallParams method sets or clears class install parameters for a device information set or a particular device information element.
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func (deviceInfoSet DevInfo) SetClassInstallParams(deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32) error {
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return SetupDiSetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize)
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}
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//sys setupDiClassNameFromGuidEx(classGUID *windows.GUID, className *uint16, classNameSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassNameFromGuidExW
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// SetupDiClassNameFromGuidEx function retrieves the class name associated with a class GUID. The class can be installed on a local or remote computer.
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func SetupDiClassNameFromGuidEx(classGUID *windows.GUID, machineName string) (className string, err error) {
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var classNameUTF16 [MAX_CLASS_NAME_LEN]uint16
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var machineNameUTF16 *uint16
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if machineName != "" {
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machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
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if err != nil {
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return
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}
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}
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err = setupDiClassNameFromGuidEx(classGUID, &classNameUTF16[0], MAX_CLASS_NAME_LEN, nil, machineNameUTF16, 0)
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if err != nil {
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return
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}
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className = windows.UTF16ToString(classNameUTF16[:])
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return
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}
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//sys setupDiClassGuidsFromNameEx(className *uint16, classGuidList *windows.GUID, classGuidListSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassGuidsFromNameExW
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// 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.
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func SetupDiClassGuidsFromNameEx(className string, machineName string) ([]windows.GUID, error) {
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classNameUTF16, err := syscall.UTF16PtrFromString(className)
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|
if err != nil {
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|
return nil, err
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|
}
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const bufCapacity = 4
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var buf [bufCapacity]windows.GUID
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var bufLen uint32
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var machineNameUTF16 *uint16
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|
if machineName != "" {
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machineNameUTF16, err = syscall.UTF16PtrFromString(machineName)
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|
if err != nil {
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|
return nil, err
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|
}
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|
}
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|
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err = setupDiClassGuidsFromNameEx(classNameUTF16, &buf[0], bufCapacity, &bufLen, machineNameUTF16, 0)
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|
if err == nil {
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|
// The GUID array was sufficiently big. Return its slice.
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|
return buf[:bufLen], nil
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|
}
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|
|
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if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_INSUFFICIENT_BUFFER {
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|
// The GUID array was too small. Now that we got the required size, create another one big enough and retry.
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buf := make([]windows.GUID, bufLen)
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err = setupDiClassGuidsFromNameEx(classNameUTF16, &buf[0], bufLen, &bufLen, machineNameUTF16, 0)
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|
if err == nil {
|
|
return buf[:bufLen], nil
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|
}
|
|
}
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|
|
|
return nil, err
|
|
}
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//sys setupDiGetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiGetSelectedDevice
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// SetupDiGetSelectedDevice function retrieves the selected device information element in a device information set.
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|
func SetupDiGetSelectedDevice(deviceInfoSet DevInfo) (*DevInfoData, error) {
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|
data := &DevInfoData{}
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|
data.size = uint32(unsafe.Sizeof(*data))
|
|
|
|
return data, setupDiGetSelectedDevice(deviceInfoSet, data)
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|
}
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|
|
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// GetSelectedDevice method retrieves the selected device information element in a device information set.
|
|
func (deviceInfoSet DevInfo) GetSelectedDevice() (*DevInfoData, error) {
|
|
return SetupDiGetSelectedDevice(deviceInfoSet)
|
|
}
|
|
|
|
// SetupDiSetSelectedDevice function sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
|
|
//sys SetupDiSetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiSetSelectedDevice
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|
|
|
// SetSelectedDevice method sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
|
|
func (deviceInfoSet DevInfo) SetSelectedDevice(deviceInfoData *DevInfoData) error {
|
|
return SetupDiSetSelectedDevice(deviceInfoSet, deviceInfoData)
|
|
}
|