diff options
Diffstat (limited to 'tun/wintun/session_windows.go')
-rw-r--r-- | tun/wintun/session_windows.go | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/tun/wintun/session_windows.go b/tun/wintun/session_windows.go deleted file mode 100644 index f023baf..0000000 --- a/tun/wintun/session_windows.go +++ /dev/null @@ -1,90 +0,0 @@ -/* SPDX-License-Identifier: MIT - * - * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved. - */ - -package wintun - -import ( - "syscall" - "unsafe" - - "golang.org/x/sys/windows" -) - -type Session struct { - handle uintptr -} - -const ( - PacketSizeMax = 0xffff // Maximum packet size - RingCapacityMin = 0x20000 // Minimum ring capacity (128 kiB) - RingCapacityMax = 0x4000000 // Maximum ring capacity (64 MiB) -) - -// Packet with data -type Packet struct { - Next *Packet // Pointer to next packet in queue - Size uint32 // Size of packet (max WINTUN_MAX_IP_PACKET_SIZE) - Data *[PacketSizeMax]byte // Pointer to layer 3 IPv4 or IPv6 packet -} - -var ( - procWintunAllocateSendPacket = modwintun.NewProc("WintunAllocateSendPacket") - procWintunEndSession = modwintun.NewProc("WintunEndSession") - procWintunGetReadWaitEvent = modwintun.NewProc("WintunGetReadWaitEvent") - procWintunReceivePacket = modwintun.NewProc("WintunReceivePacket") - procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket") - procWintunSendPacket = modwintun.NewProc("WintunSendPacket") - procWintunStartSession = modwintun.NewProc("WintunStartSession") -) - -func (wintun *Adapter) StartSession(capacity uint32) (session Session, err error) { - r0, _, e1 := syscall.Syscall(procWintunStartSession.Addr(), 2, uintptr(wintun.handle), uintptr(capacity), 0) - if r0 == 0 { - err = e1 - } else { - session = Session{r0} - } - return -} - -func (session Session) End() { - syscall.Syscall(procWintunEndSession.Addr(), 1, session.handle, 0, 0) - session.handle = 0 -} - -func (session Session) ReadWaitEvent() (handle windows.Handle) { - r0, _, _ := syscall.Syscall(procWintunGetReadWaitEvent.Addr(), 1, session.handle, 0, 0) - handle = windows.Handle(r0) - return -} - -func (session Session) ReceivePacket() (packet []byte, err error) { - var packetSize uint32 - r0, _, e1 := syscall.Syscall(procWintunReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packetSize)), 0) - if r0 == 0 { - err = e1 - return - } - packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize) - return -} - -func (session Session) ReleaseReceivePacket(packet []byte) { - syscall.Syscall(procWintunReleaseReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0) -} - -func (session Session) AllocateSendPacket(packetSize int) (packet []byte, err error) { - r0, _, e1 := syscall.Syscall(procWintunAllocateSendPacket.Addr(), 2, session.handle, uintptr(packetSize), 0) - if r0 == 0 { - err = e1 - return - } - packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize) - return -} - -func (session Session) SendPacket(packet []byte) { - syscall.Syscall(procWintunSendPacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0) -} |