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30be488e91
This change introduces a package that provides the basic manipulation of routing facilities on BSD variants. Unlike the existing APIs in syscall package of standard library, the package tries to provide operating system and its architecture agnostic APIs. At present, the package supports any version of Darwin, any version of DragonFly BSD, FreeBSD 7 through 11, NetBSD 6 and above, and OpenBSD 5.6 and above. Updates golang/go#14724. Change-Id: Id964ea22dec491ddac3776e3a8c8c10f140f96ac Reviewed-on: https://go-review.googlesource.com/22446 Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
67 lines
1.6 KiB
Go
67 lines
1.6 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin dragonfly netbsd
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package route
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import "runtime"
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func (w *wireFormat) parseInterfaceMessage(_ RIBType, b []byte) (Message, error) {
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if len(b) < w.bodyOff {
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return nil, errMessageTooShort
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}
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l := int(nativeEndian.Uint16(b[:2]))
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if len(b) < l {
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return nil, errInvalidMessage
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}
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attrs := uint(nativeEndian.Uint32(b[4:8]))
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if attrs&sysRTA_IFP == 0 {
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return nil, nil
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}
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m := &InterfaceMessage{
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Version: int(b[2]),
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Type: int(b[3]),
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Addrs: make([]Addr, sysRTAX_MAX),
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Flags: int(nativeEndian.Uint32(b[8:12])),
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Index: int(nativeEndian.Uint16(b[12:14])),
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extOff: w.extOff,
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raw: b[:l],
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}
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a, err := parseLinkAddr(b[w.bodyOff:])
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if err != nil {
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return nil, err
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}
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m.Addrs[sysRTAX_IFP] = a
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m.Name = a.(*LinkAddr).Name
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return m, nil
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}
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func (w *wireFormat) parseInterfaceAddrMessage(_ RIBType, b []byte) (Message, error) {
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if len(b) < w.bodyOff {
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return nil, errMessageTooShort
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}
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l := int(nativeEndian.Uint16(b[:2]))
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if len(b) < l {
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return nil, errInvalidMessage
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}
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m := &InterfaceAddrMessage{
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Version: int(b[2]),
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Type: int(b[3]),
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Flags: int(nativeEndian.Uint32(b[8:12])),
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raw: b[:l],
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}
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if runtime.GOOS == "netbsd" {
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m.Index = int(nativeEndian.Uint16(b[16:18]))
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} else {
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m.Index = int(nativeEndian.Uint16(b[12:14]))
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}
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var err error
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m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[4:8])), parseKernelInetAddr, b[w.bodyOff:])
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if err != nil {
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return nil, err
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}
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return m, nil
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}
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