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Diffstat (limited to 'vendor/golang.org/x/net/ipv4/sys_darwin.go')
-rw-r--r--vendor/golang.org/x/net/ipv4/sys_darwin.go93
1 files changed, 93 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/sys_darwin.go b/vendor/golang.org/x/net/ipv4/sys_darwin.go
new file mode 100644
index 0000000..e8fb191
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_darwin.go
@@ -0,0 +1,93 @@
+// Copyright 2014 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 (
+ "net"
+ "strconv"
+ "strings"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoStripHeader: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_STRIPHDR, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ }
+)
+
+func init() {
+ // Seems like kern.osreldate is veiled on latest OS X. We use
+ // kern.osrelease instead.
+ s, err := syscall.Sysctl("kern.osrelease")
+ if err != nil {
+ return
+ }
+ ss := strings.Split(s, ".")
+ if len(ss) == 0 {
+ return
+ }
+ // The IP_PKTINFO and protocol-independent multicast API were
+ // introduced in OS X 10.7 (Darwin 11). But it looks like
+ // those features require OS X 10.8 (Darwin 12) or above.
+ // See http://support.apple.com/kb/HT1633.
+ if mjver, err := strconv.Atoi(ss[0]); err != nil || mjver < 12 {
+ return
+ }
+ ctlOpts[ctlPacketInfo].name = sysIP_PKTINFO
+ ctlOpts[ctlPacketInfo].length = sizeofInetPktinfo
+ ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo
+ ctlOpts[ctlPacketInfo].parse = parsePacketInfo
+ sockOpts[ssoPacketInfo] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVPKTINFO, Len: 4}}
+ sockOpts[ssoMulticastInterface] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: sizeofIPMreqn}, typ: ssoTypeIPMreqn}
+ sockOpts[ssoJoinGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq}
+ sockOpts[ssoLeaveGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq}
+ sockOpts[ssoJoinSourceGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}
+ sockOpts[ssoLeaveSourceGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}
+ sockOpts[ssoBlockSourceGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}
+ sockOpts[ssoUnblockSourceGroup] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}
+}
+
+func (pi *inetPktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], src)
+}