From 14bb08c1df8db9ec6c8a05520d4eee67971235d9 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Thu, 27 Sep 2018 20:03:23 +0200 Subject: mod tidy --- vendor/golang.org/x/net/ipv4/header.go | 158 --------------------------------- 1 file changed, 158 deletions(-) delete mode 100644 vendor/golang.org/x/net/ipv4/header.go (limited to 'vendor/golang.org/x/net/ipv4/header.go') diff --git a/vendor/golang.org/x/net/ipv4/header.go b/vendor/golang.org/x/net/ipv4/header.go deleted file mode 100644 index 358afe2..0000000 --- a/vendor/golang.org/x/net/ipv4/header.go +++ /dev/null @@ -1,158 +0,0 @@ -// Copyright 2012 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. - -package ipv4 - -import ( - "encoding/binary" - "fmt" - "net" - "runtime" - - "golang.org/x/net/internal/socket" -) - -const ( - Version = 4 // protocol version - HeaderLen = 20 // header length without extension headers - maxHeaderLen = 60 // sensible default, revisit if later RFCs define new usage of version and header length fields -) - -type HeaderFlags int - -const ( - MoreFragments HeaderFlags = 1 << iota // more fragments flag - DontFragment // don't fragment flag -) - -// A Header represents an IPv4 header. -type Header struct { - Version int // protocol version - Len int // header length - TOS int // type-of-service - TotalLen int // packet total length - ID int // identification - Flags HeaderFlags // flags - FragOff int // fragment offset - TTL int // time-to-live - Protocol int // next protocol - Checksum int // checksum - Src net.IP // source address - Dst net.IP // destination address - Options []byte // options, extension headers -} - -func (h *Header) String() string { - if h == nil { - return "" - } - return fmt.Sprintf("ver=%d hdrlen=%d tos=%#x totallen=%d id=%#x flags=%#x fragoff=%#x ttl=%d proto=%d cksum=%#x src=%v dst=%v", h.Version, h.Len, h.TOS, h.TotalLen, h.ID, h.Flags, h.FragOff, h.TTL, h.Protocol, h.Checksum, h.Src, h.Dst) -} - -// Marshal returns the binary encoding of h. -func (h *Header) Marshal() ([]byte, error) { - if h == nil { - return nil, errInvalidConn - } - if h.Len < HeaderLen { - return nil, errHeaderTooShort - } - hdrlen := HeaderLen + len(h.Options) - b := make([]byte, hdrlen) - b[0] = byte(Version<<4 | (hdrlen >> 2 & 0x0f)) - b[1] = byte(h.TOS) - flagsAndFragOff := (h.FragOff & 0x1fff) | int(h.Flags<<13) - switch runtime.GOOS { - case "darwin", "dragonfly", "netbsd": - socket.NativeEndian.PutUint16(b[2:4], uint16(h.TotalLen)) - socket.NativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff)) - case "freebsd": - if freebsdVersion < 1100000 { - socket.NativeEndian.PutUint16(b[2:4], uint16(h.TotalLen)) - socket.NativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff)) - } else { - binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen)) - binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff)) - } - default: - binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen)) - binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff)) - } - binary.BigEndian.PutUint16(b[4:6], uint16(h.ID)) - b[8] = byte(h.TTL) - b[9] = byte(h.Protocol) - binary.BigEndian.PutUint16(b[10:12], uint16(h.Checksum)) - if ip := h.Src.To4(); ip != nil { - copy(b[12:16], ip[:net.IPv4len]) - } - if ip := h.Dst.To4(); ip != nil { - copy(b[16:20], ip[:net.IPv4len]) - } else { - return nil, errMissingAddress - } - if len(h.Options) > 0 { - copy(b[HeaderLen:], h.Options) - } - return b, nil -} - -// Parse parses b as an IPv4 header and stores the result in h. -func (h *Header) Parse(b []byte) error { - if h == nil || len(b) < HeaderLen { - return errHeaderTooShort - } - hdrlen := int(b[0]&0x0f) << 2 - if hdrlen > len(b) { - return errBufferTooShort - } - h.Version = int(b[0] >> 4) - h.Len = hdrlen - h.TOS = int(b[1]) - h.ID = int(binary.BigEndian.Uint16(b[4:6])) - h.TTL = int(b[8]) - h.Protocol = int(b[9]) - h.Checksum = int(binary.BigEndian.Uint16(b[10:12])) - h.Src = net.IPv4(b[12], b[13], b[14], b[15]) - h.Dst = net.IPv4(b[16], b[17], b[18], b[19]) - switch runtime.GOOS { - case "darwin", "dragonfly", "netbsd": - h.TotalLen = int(socket.NativeEndian.Uint16(b[2:4])) + hdrlen - h.FragOff = int(socket.NativeEndian.Uint16(b[6:8])) - case "freebsd": - if freebsdVersion < 1100000 { - h.TotalLen = int(socket.NativeEndian.Uint16(b[2:4])) - if freebsdVersion < 1000000 { - h.TotalLen += hdrlen - } - h.FragOff = int(socket.NativeEndian.Uint16(b[6:8])) - } else { - h.TotalLen = int(binary.BigEndian.Uint16(b[2:4])) - h.FragOff = int(binary.BigEndian.Uint16(b[6:8])) - } - default: - h.TotalLen = int(binary.BigEndian.Uint16(b[2:4])) - h.FragOff = int(binary.BigEndian.Uint16(b[6:8])) - } - h.Flags = HeaderFlags(h.FragOff&0xe000) >> 13 - h.FragOff = h.FragOff & 0x1fff - optlen := hdrlen - HeaderLen - if optlen > 0 && len(b) >= hdrlen { - if cap(h.Options) < optlen { - h.Options = make([]byte, optlen) - } else { - h.Options = h.Options[:optlen] - } - copy(h.Options, b[HeaderLen:hdrlen]) - } - return nil -} - -// ParseHeader parses b as an IPv4 header. -func ParseHeader(b []byte) (*Header, error) { - h := new(Header) - if err := h.Parse(b); err != nil { - return nil, err - } - return h, nil -} -- cgit v1.2.3