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// Copyright 2016 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 solaris
package lif
import (
"errors"
"unsafe"
)
// An Addr represents an address associated with packet routing.
type Addr interface {
// Family returns an address family.
Family() int
}
// An Inet4Addr represents an internet address for IPv4.
type Inet4Addr struct {
IP [4]byte // IP address
PrefixLen int // address prefix length
}
// Family implements the Family method of Addr interface.
func (a *Inet4Addr) Family() int { return sysAF_INET }
// An Inet6Addr represents an internet address for IPv6.
type Inet6Addr struct {
IP [16]byte // IP address
PrefixLen int // address prefix length
ZoneID int // zone identifier
}
// Family implements the Family method of Addr interface.
func (a *Inet6Addr) Family() int { return sysAF_INET6 }
// Addrs returns a list of interface addresses.
//
// The provided af must be an address family and name must be a data
// link name. The zero value of af or name means a wildcard.
func Addrs(af int, name string) ([]Addr, error) {
eps, err := newEndpoints(af)
if len(eps) == 0 {
return nil, err
}
defer func() {
for _, ep := range eps {
ep.close()
}
}()
lls, err := links(eps, name)
if len(lls) == 0 {
return nil, err
}
var as []Addr
for _, ll := range lls {
var lifr lifreq
for i := 0; i < len(ll.Name); i++ {
lifr.Name[i] = int8(ll.Name[i])
}
for _, ep := range eps {
ioc := int64(sysSIOCGLIFADDR)
err := ioctl(ep.s, uintptr(ioc), unsafe.Pointer(&lifr))
if err != nil {
continue
}
sa := (*sockaddrStorage)(unsafe.Pointer(&lifr.Lifru[0]))
l := int(littleEndian.Uint32(lifr.Lifru1[:4]))
if l == 0 {
continue
}
switch sa.Family {
case sysAF_INET:
a := &Inet4Addr{PrefixLen: l}
copy(a.IP[:], lifr.Lifru[4:8])
as = append(as, a)
case sysAF_INET6:
a := &Inet6Addr{PrefixLen: l, ZoneID: int(littleEndian.Uint32(lifr.Lifru[24:28]))}
copy(a.IP[:], lifr.Lifru[8:24])
as = append(as, a)
}
}
}
return as, nil
}
func parseLinkAddr(b []byte) ([]byte, error) {
nlen, alen, slen := int(b[1]), int(b[2]), int(b[3])
l := 4 + nlen + alen + slen
if len(b) < l {
return nil, errors.New("invalid address")
}
b = b[4:]
var addr []byte
if nlen > 0 {
b = b[nlen:]
}
if alen > 0 {
addr = make([]byte, alen)
copy(addr, b[:alen])
}
return addr, nil
}
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