From e1e8d058a33f7566f9c565d04b0d8b56f9645c35 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 25 Apr 2018 09:28:54 +0200 Subject: add vendor --- vendor/golang.org/x/net/ipv4/packet_go1_9.go | 67 ++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 vendor/golang.org/x/net/ipv4/packet_go1_9.go (limited to 'vendor/golang.org/x/net/ipv4/packet_go1_9.go') diff --git a/vendor/golang.org/x/net/ipv4/packet_go1_9.go b/vendor/golang.org/x/net/ipv4/packet_go1_9.go new file mode 100644 index 0000000..082c36d --- /dev/null +++ b/vendor/golang.org/x/net/ipv4/packet_go1_9.go @@ -0,0 +1,67 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build go1.9 + +package ipv4 + +import ( + "net" + + "golang.org/x/net/internal/socket" +) + +func (c *packetHandler) readFrom(b []byte) (h *Header, p []byte, cm *ControlMessage, err error) { + c.rawOpt.RLock() + m := socket.Message{ + Buffers: [][]byte{b}, + OOB: NewControlMessage(c.rawOpt.cflags), + } + c.rawOpt.RUnlock() + if err := c.RecvMsg(&m, 0); err != nil { + return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err} + } + var hs []byte + if hs, p, err = slicePacket(b[:m.N]); err != nil { + return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err} + } + if h, err = ParseHeader(hs); err != nil { + return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err} + } + if m.NN > 0 { + cm = new(ControlMessage) + if err := cm.Parse(m.OOB[:m.NN]); err != nil { + return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err} + } + } + if src, ok := m.Addr.(*net.IPAddr); ok && cm != nil { + cm.Src = src.IP + } + return +} + +func (c *packetHandler) writeTo(h *Header, p []byte, cm *ControlMessage) error { + m := socket.Message{ + OOB: cm.Marshal(), + } + wh, err := h.Marshal() + if err != nil { + return err + } + m.Buffers = [][]byte{wh, p} + dst := new(net.IPAddr) + if cm != nil { + if ip := cm.Dst.To4(); ip != nil { + dst.IP = ip + } + } + if dst.IP == nil { + dst.IP = h.Dst + } + m.Addr = dst + if err := c.SendMsg(&m, 0); err != nil { + return &net.OpError{Op: "write", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Addr: opAddr(dst), Err: err} + } + return nil +} -- cgit v1.2.3