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Removed legacy code and refactoring

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This commit is contained in:
Vladimir
2022-11-07 11:07:49 +01:00
parent 1b480066be
commit 3768db6b32
4 changed files with 157 additions and 145 deletions
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63
firewall/interception/windowskext/syscall.go
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@@ -27,47 +27,7 @@ func ctlCode(device_type, function, method, access uint32) uint32 {
return (device_type << 16) | (access << 14) | (function << 2) | method
}
func deviceIoControlRead(handle windows.Handle, code uint32, data []byte) (uint32, error) {
var bytesReturned uint32
var dataPtr *byte = nil
var dataSize uint32 = 0
if data != nil {
dataPtr = &data[0]
dataSize = uint32(len(data))
}
err := windows.DeviceIoControl(handle,
code,
nil, 0,
dataPtr, dataSize,
&bytesReturned, nil)
return bytesReturned, err
}
func deviceIoControlWrite(handle windows.Handle, code uint32, data []byte) (uint32, error) {
var bytesReturned uint32
var dataPtr *byte = nil
var dataSize uint32 = 0
if data != nil {
dataPtr = &data[0]
dataSize = uint32(len(data))
}
err := windows.DeviceIoControl(handle,
code,
dataPtr, dataSize,
nil, 0,
&bytesReturned, nil)
return bytesReturned, err
}
func deviceIoControlReadWrite(handle windows.Handle, code uint32, inData []byte, outData []byte) (uint32, error) {
var bytesReturned uint32
func deviceIOControlAsync(handle windows.Handle, code uint32, inData []byte, outData []byte) (*windows.Overlapped, error) {
var inDataPtr *byte = nil
var inDataSize uint32 = 0
if inData != nil {
@@ -81,11 +41,30 @@ func deviceIoControlReadWrite(handle windows.Handle, code uint32, inData []byte,
outDataPtr = &outData[0]
outDataSize = uint32(len(outData))
}
overlapped := &windows.Overlapped{}
err := windows.DeviceIoControl(handle,
code,
inDataPtr, inDataSize,
outDataPtr, outDataSize,
&bytesReturned, nil)
nil, overlapped)
if err != nil {
return nil, err
}
return overlapped, nil
}
func deviceIOControl(handle windows.Handle, code uint32, inData []byte, outData []byte) (uint32, error) {
overlapped, err := deviceIOControlAsync(handle, code, inData, outData)
if err != nil {
return 0, err
}
var bytesReturned uint32
err = windows.GetOverlappedResult(handle, overlapped, &bytesReturned, true)
return bytesReturned, err
}