summaryrefslogtreecommitdiff
path: root/vendor/golang.org/x/net/ipv4/sockopt_posix.go
blob: e96955bc188b7bf424285d3fc232280b5865d5bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
// 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.

// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows

package ipv4

import (
	"net"
	"unsafe"

	"golang.org/x/net/bpf"
	"golang.org/x/net/internal/socket"
)

func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
	switch so.typ {
	case ssoTypeIPMreqn:
		return so.getIPMreqn(c)
	default:
		return so.getMulticastIf(c)
	}
}

func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
	switch so.typ {
	case ssoTypeIPMreqn:
		return so.setIPMreqn(c, ifi, nil)
	default:
		return so.setMulticastIf(c, ifi)
	}
}

func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
	b := make([]byte, so.Len)
	n, err := so.Get(c, b)
	if err != nil {
		return nil, err
	}
	if n != sizeofICMPFilter {
		return nil, errOpNoSupport
	}
	return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil
}

func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
	b := (*[sizeofICMPFilter]byte)(unsafe.Pointer(f))[:sizeofICMPFilter]
	return so.Set(c, b)
}

func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
	switch so.typ {
	case ssoTypeIPMreq:
		return so.setIPMreq(c, ifi, grp)
	case ssoTypeIPMreqn:
		return so.setIPMreqn(c, ifi, grp)
	case ssoTypeGroupReq:
		return so.setGroupReq(c, ifi, grp)
	default:
		return errOpNoSupport
	}
}

func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
	return so.setGroupSourceReq(c, ifi, grp, src)
}

func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
	return so.setAttachFilter(c, f)
}