135 lines
5.1 KiB
Go
135 lines
5.1 KiB
Go
// Copyright 2013 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 ipv6
|
|
|
|
import (
|
|
"net"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
)
|
|
|
|
type sysSockoptLen int32
|
|
|
|
var (
|
|
ctlOpts = [ctlMax]ctlOpt{
|
|
ctlHopLimit: {sysIPV6_2292HOPLIMIT, 4, marshal2292HopLimit, parseHopLimit},
|
|
ctlPacketInfo: {sysIPV6_2292PKTINFO, sysSizeofInet6Pktinfo, marshal2292PacketInfo, parsePacketInfo},
|
|
}
|
|
|
|
sockOpts = [ssoMax]sockOpt{
|
|
ssoHopLimit: {iana.ProtocolIPv6, sysIPV6_UNICAST_HOPS, ssoTypeInt},
|
|
ssoMulticastInterface: {iana.ProtocolIPv6, sysIPV6_MULTICAST_IF, ssoTypeInterface},
|
|
ssoMulticastHopLimit: {iana.ProtocolIPv6, sysIPV6_MULTICAST_HOPS, ssoTypeInt},
|
|
ssoMulticastLoopback: {iana.ProtocolIPv6, sysIPV6_MULTICAST_LOOP, ssoTypeInt},
|
|
ssoReceiveHopLimit: {iana.ProtocolIPv6, sysIPV6_2292HOPLIMIT, ssoTypeInt},
|
|
ssoReceivePacketInfo: {iana.ProtocolIPv6, sysIPV6_2292PKTINFO, ssoTypeInt},
|
|
ssoChecksum: {iana.ProtocolIPv6, sysIPV6_CHECKSUM, ssoTypeInt},
|
|
ssoICMPFilter: {iana.ProtocolIPv6ICMP, sysICMP6_FILTER, ssoTypeICMPFilter},
|
|
ssoJoinGroup: {iana.ProtocolIPv6, sysIPV6_JOIN_GROUP, ssoTypeIPMreq},
|
|
ssoLeaveGroup: {iana.ProtocolIPv6, sysIPV6_LEAVE_GROUP, ssoTypeIPMreq},
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
// Seems like kern.osreldate is veiled on latest OS X. We use
|
|
// kern.osrelease instead.
|
|
osver, err := syscall.Sysctl("kern.osrelease")
|
|
if err != nil {
|
|
return
|
|
}
|
|
var i int
|
|
for i = range osver {
|
|
if osver[i] == '.' {
|
|
break
|
|
}
|
|
}
|
|
// The IP_PKTINFO and protocol-independent multicast API were
|
|
// introduced in OS X 10.7 (Darwin 11.0.0). But it looks like
|
|
// those features require OS X 10.8 (Darwin 12.0.0) and above.
|
|
// See http://support.apple.com/kb/HT1633.
|
|
if i > 2 || i == 2 && osver[0] >= '1' && osver[1] >= '2' {
|
|
ctlOpts[ctlTrafficClass].name = sysIPV6_TCLASS
|
|
ctlOpts[ctlTrafficClass].length = 4
|
|
ctlOpts[ctlTrafficClass].marshal = marshalTrafficClass
|
|
ctlOpts[ctlTrafficClass].parse = parseTrafficClass
|
|
ctlOpts[ctlHopLimit].name = sysIPV6_HOPLIMIT
|
|
ctlOpts[ctlHopLimit].marshal = marshalHopLimit
|
|
ctlOpts[ctlPacketInfo].name = sysIPV6_PKTINFO
|
|
ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo
|
|
ctlOpts[ctlNextHop].name = sysIPV6_NEXTHOP
|
|
ctlOpts[ctlNextHop].length = sysSizeofSockaddrInet6
|
|
ctlOpts[ctlNextHop].marshal = marshalNextHop
|
|
ctlOpts[ctlNextHop].parse = parseNextHop
|
|
ctlOpts[ctlPathMTU].name = sysIPV6_PATHMTU
|
|
ctlOpts[ctlPathMTU].length = sysSizeofIPv6Mtuinfo
|
|
ctlOpts[ctlPathMTU].marshal = marshalPathMTU
|
|
ctlOpts[ctlPathMTU].parse = parsePathMTU
|
|
sockOpts[ssoTrafficClass].level = iana.ProtocolIPv6
|
|
sockOpts[ssoTrafficClass].name = sysIPV6_TCLASS
|
|
sockOpts[ssoTrafficClass].typ = ssoTypeInt
|
|
sockOpts[ssoReceiveTrafficClass].level = iana.ProtocolIPv6
|
|
sockOpts[ssoReceiveTrafficClass].name = sysIPV6_RECVTCLASS
|
|
sockOpts[ssoReceiveTrafficClass].typ = ssoTypeInt
|
|
sockOpts[ssoReceiveHopLimit].name = sysIPV6_RECVHOPLIMIT
|
|
sockOpts[ssoReceivePacketInfo].name = sysIPV6_RECVPKTINFO
|
|
sockOpts[ssoReceivePathMTU].level = iana.ProtocolIPv6
|
|
sockOpts[ssoReceivePathMTU].name = sysIPV6_RECVPATHMTU
|
|
sockOpts[ssoReceivePathMTU].typ = ssoTypeInt
|
|
sockOpts[ssoPathMTU].level = iana.ProtocolIPv6
|
|
sockOpts[ssoPathMTU].name = sysIPV6_PATHMTU
|
|
sockOpts[ssoPathMTU].typ = ssoTypeMTUInfo
|
|
sockOpts[ssoJoinGroup].name = sysMCAST_JOIN_GROUP
|
|
sockOpts[ssoJoinGroup].typ = ssoTypeGroupReq
|
|
sockOpts[ssoLeaveGroup].name = sysMCAST_LEAVE_GROUP
|
|
sockOpts[ssoLeaveGroup].typ = ssoTypeGroupReq
|
|
sockOpts[ssoJoinSourceGroup].level = iana.ProtocolIPv6
|
|
sockOpts[ssoJoinSourceGroup].name = sysMCAST_JOIN_SOURCE_GROUP
|
|
sockOpts[ssoJoinSourceGroup].typ = ssoTypeGroupSourceReq
|
|
sockOpts[ssoLeaveSourceGroup].level = iana.ProtocolIPv6
|
|
sockOpts[ssoLeaveSourceGroup].name = sysMCAST_LEAVE_SOURCE_GROUP
|
|
sockOpts[ssoLeaveSourceGroup].typ = ssoTypeGroupSourceReq
|
|
sockOpts[ssoBlockSourceGroup].level = iana.ProtocolIPv6
|
|
sockOpts[ssoBlockSourceGroup].name = sysMCAST_BLOCK_SOURCE
|
|
sockOpts[ssoBlockSourceGroup].typ = ssoTypeGroupSourceReq
|
|
sockOpts[ssoUnblockSourceGroup].level = iana.ProtocolIPv6
|
|
sockOpts[ssoUnblockSourceGroup].name = sysMCAST_UNBLOCK_SOURCE
|
|
sockOpts[ssoUnblockSourceGroup].typ = ssoTypeGroupSourceReq
|
|
}
|
|
}
|
|
|
|
func (sa *sysSockaddrInet6) setSockaddr(ip net.IP, i int) {
|
|
sa.Len = sysSizeofSockaddrInet6
|
|
sa.Family = syscall.AF_INET6
|
|
copy(sa.Addr[:], ip)
|
|
sa.Scope_id = uint32(i)
|
|
}
|
|
|
|
func (pi *sysInet6Pktinfo) setIfindex(i int) {
|
|
pi.Ifindex = uint32(i)
|
|
}
|
|
|
|
func (mreq *sysIPv6Mreq) setIfindex(i int) {
|
|
mreq.Interface = uint32(i)
|
|
}
|
|
|
|
func (gr *sysGroupReq) setGroup(grp net.IP) {
|
|
sa := (*sysSockaddrInet6)(unsafe.Pointer(&gr.Pad_cgo_0[0]))
|
|
sa.Len = sysSizeofSockaddrInet6
|
|
sa.Family = syscall.AF_INET6
|
|
copy(sa.Addr[:], grp)
|
|
}
|
|
|
|
func (gsr *sysGroupSourceReq) setSourceGroup(grp, src net.IP) {
|
|
sa := (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Pad_cgo_0[0]))
|
|
sa.Len = sysSizeofSockaddrInet6
|
|
sa.Family = syscall.AF_INET6
|
|
copy(sa.Addr[:], grp)
|
|
sa = (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Pad_cgo_1[0]))
|
|
sa.Len = sysSizeofSockaddrInet6
|
|
sa.Family = syscall.AF_INET6
|
|
copy(sa.Addr[:], src)
|
|
}
|