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wintun: Make errors more descriptive

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-03-08 09:45:59 +01:00
parent 70449f1a97
commit c2a2b8d739
1 changed files with 20 additions and 15 deletions
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35
tun/wintun/wintun_windows.go
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@ -47,7 +47,7 @@ func GetInterface(ifname string, hwndParent uintptr) (*Wintun, error) {
// Create a list of network devices.
devInfoList, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, enumerator, hwndParent, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), machineName)
if err != nil {
return nil, err
return nil, errors.New(fmt.Sprintf("SetupDiGetClassDevsEx(%v) failed: ", guid.ToString(&deviceClassNetGUID)) + err.Error())
}
defer devInfoList.Close()
@ -86,7 +86,7 @@ func GetInterface(ifname string, hwndParent uintptr) (*Wintun, error) {
const driverType = setupapi.SPDIT_COMPATDRIVER
err = devInfoList.BuildDriverInfoList(deviceData, driverType)
if err != nil {
return nil, err
return nil, errors.New("SetupDiBuildDriverInfoList failed: " + err.Error())
}
defer devInfoList.DestroyDriverInfoList(deviceData, driverType)
@ -140,42 +140,42 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
// Create an empty device info set for network adapter device class.
devInfoList, err := setupapi.SetupDiCreateDeviceInfoListEx(&deviceClassNetGUID, hwndParent, machineName)
if err != nil {
return nil, false, err
return nil, false, errors.New(fmt.Sprintf("SetupDiCreateDeviceInfoListEx(%v) failed: ", guid.ToString(&deviceClassNetGUID)) + err.Error())
}
// Get the device class name from GUID.
className, err := setupapi.SetupDiClassNameFromGuidEx(&deviceClassNetGUID, machineName)
if err != nil {
return nil, false, err
return nil, false, errors.New(fmt.Sprintf("SetupDiClassNameFromGuidEx(%v) failed: ", guid.ToString(&deviceClassNetGUID)) + err.Error())
}
// Create a new device info element and add it to the device info set.
deviceData, err := devInfoList.CreateDeviceInfo(className, &deviceClassNetGUID, description, hwndParent, setupapi.DICD_GENERATE_ID)
if err != nil {
return nil, false, err
return nil, false, errors.New("SetupDiCreateDeviceInfo failed: " + err.Error())
}
// Set a device information element as the selected member of a device information set.
err = devInfoList.SetSelectedDevice(deviceData)
if err != nil {
return nil, false, err
return nil, false, errors.New("SetupDiSetSelectedDevice failed: " + err.Error())
}
// Set Plug&Play device hardware ID property.
hwid, err := syscall.UTF16FromString(hardwareID)
if err != nil {
return nil, false, err
return nil, false, err // syscall.UTF16FromString(hardwareID) should never fail: hardwareID is const string without NUL chars.
}
err = devInfoList.SetDeviceRegistryProperty(deviceData, setupapi.SPDRP_HARDWAREID, setupapi.UTF16ToBuf(append(hwid, 0)))
if err != nil {
return nil, false, err
return nil, false, errors.New("SetupDiSetDeviceRegistryProperty(SPDRP_HARDWAREID) failed: " + err.Error())
}
// Search for the driver.
const driverType = setupapi.SPDIT_CLASSDRIVER
err = devInfoList.BuildDriverInfoList(deviceData, driverType)
if err != nil {
return nil, false, err
return nil, false, errors.New("SetupDiBuildDriverInfoList failed: " + err.Error())
}
defer devInfoList.DestroyDriverInfoList(deviceData, driverType)
@ -222,13 +222,13 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
// Call appropriate class installer.
err = devInfoList.CallClassInstaller(setupapi.DIF_REGISTERDEVICE, deviceData)
if err != nil {
return nil, false, err
return nil, false, errors.New("SetupDiCallClassInstaller(DIF_REGISTERDEVICE) failed: " + err.Error())
}
// Register device co-installers if any.
// Register device co-installers if any. (Ignore errors)
devInfoList.CallClassInstaller(setupapi.DIF_REGISTER_COINSTALLERS, deviceData)
// Install interfaces if any.
// Install interfaces if any. (Ignore errors)
devInfoList.CallClassInstaller(setupapi.DIF_INSTALLINTERFACES, deviceData)
var wintun *Wintun
@ -236,6 +236,10 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
// Install the device.
err = devInfoList.CallClassInstaller(setupapi.DIF_INSTALLDEVICE, deviceData)
if err != nil {
err = errors.New("SetupDiCallClassInstaller(DIF_INSTALLDEVICE) failed: " + err.Error())
}
if err == nil {
// Check if a system reboot is required. (Ignore errors)
if ret, _ := checkReboot(devInfoList, deviceData); ret {
@ -304,6 +308,7 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
if err != nil {
if errWin, ok := err.(syscall.Errno); ok && errWin == windows.ERROR_FILE_NOT_FOUND {
// Wait and retry. TODO: Wait for a cancellable event instead.
err = errors.New("Time-out waiting for adapter to get ready")
time.Sleep(time.Second)
continue
}
@ -355,7 +360,7 @@ func (wintun *Wintun) DeleteInterface(hwndParent uintptr) (bool, bool, error) {
// Create a list of network devices.
devInfoList, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, enumerator, hwndParent, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), machineName)
if err != nil {
return false, false, err
return false, false, errors.New(fmt.Sprintf("SetupDiGetClassDevsEx(%v) failed: ", guid.ToString(&deviceClassNetGUID)) + err.Error())
}
defer devInfoList.Close()
@ -386,13 +391,13 @@ func (wintun *Wintun) DeleteInterface(hwndParent uintptr) (bool, bool, error) {
// Set class installer parameters for DIF_REMOVE.
err = devInfoList.SetClassInstallParams(deviceData, &removeDeviceParams.ClassInstallHeader, uint32(unsafe.Sizeof(removeDeviceParams)))
if err != nil {
return false, false, err
return false, false, errors.New("SetupDiSetClassInstallParams failed: " + err.Error())
}
// Call appropriate class installer.
err = devInfoList.CallClassInstaller(setupapi.DIF_REMOVE, deviceData)
if err != nil {
return false, false, err
return false, false, errors.New("SetupDiCallClassInstaller failed: " + err.Error())
}
// Check if a system reboot is required. (Ignore errors)