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// Copyright 2015 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 net
import (
"bytes"
"internal/syscall/windows"
"sort"
"testing"
)
func TestWindowsInterfaces(t *testing.T) {
aas, err := adapterAddresses()
if err != nil {
t.Fatal(err)
}
ift, err := Interfaces()
if err != nil {
t.Fatal(err)
}
for i, ifi := range ift {
aa := aas[i]
if len(ifi.HardwareAddr) != int(aa.PhysicalAddressLength) {
t.Errorf("got %d; want %d", len(ifi.HardwareAddr), aa.PhysicalAddressLength)
}
if ifi.MTU > 0x7fffffff {
t.Errorf("%s: got %d; want less than or equal to 1<<31 - 1", ifi.Name, ifi.MTU)
}
if ifi.Flags&FlagUp != 0 && aa.OperStatus != windows.IfOperStatusUp {
t.Errorf("%s: got %v; should not include FlagUp", ifi.Name, ifi.Flags)
}
if ifi.Flags&FlagLoopback != 0 && aa.IfType != windows.IF_TYPE_SOFTWARE_LOOPBACK {
t.Errorf("%s: got %v; should not include FlagLoopback", ifi.Name, ifi.Flags)
}
if _, _, err := addrPrefixTable(aa); err != nil {
t.Errorf("%s: %v", ifi.Name, err)
}
}
}
type byAddrLen []IPNet
func (ps byAddrLen) Len() int { return len(ps) }
func (ps byAddrLen) Less(i, j int) bool {
if n := bytes.Compare(ps[i].IP, ps[j].IP); n != 0 {
return n < 0
}
if n := bytes.Compare(ps[i].Mask, ps[j].Mask); n != 0 {
return n < 0
}
return false
}
func (ps byAddrLen) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
var windowsAddrPrefixLenTests = []struct {
pfxs []IPNet
ip IP
out int
}{
{
[]IPNet{
{IP: IPv4(172, 16, 0, 0), Mask: IPv4Mask(255, 255, 0, 0)},
{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)},
{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 128)},
{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(255, 255, 255, 192)},
},
IPv4(192, 168, 0, 1),
26,
},
{
[]IPNet{
{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0"))},
{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8"))},
{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc"))},
},
ParseIP("2001:db8::1"),
126,
},
// Fallback cases. It may happen on Windows XP or 2003 server.
{
[]IPNet{
{IP: IPv4(127, 0, 0, 0).To4(), Mask: IPv4Mask(255, 0, 0, 0)},
{IP: IPv4(10, 0, 0, 0).To4(), Mask: IPv4Mask(255, 0, 0, 0)},
{IP: IPv4(172, 16, 0, 0).To4(), Mask: IPv4Mask(255, 255, 0, 0)},
{IP: IPv4(192, 168, 255, 0), Mask: IPv4Mask(255, 255, 255, 0)},
{IP: IPv4zero, Mask: IPv4Mask(0, 0, 0, 0)},
},
IPv4(192, 168, 0, 1),
8 * IPv4len,
},
{
nil,
IPv4(192, 168, 0, 1),
8 * IPv4len,
},
{
[]IPNet{
{IP: IPv6loopback, Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))},
{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0"))},
{IP: ParseIP("2001:db8:2::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8"))},
{IP: ParseIP("2001:db8:3::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc"))},
{IP: IPv6unspecified, Mask: IPMask(ParseIP("::"))},
},
ParseIP("2001:db8::1"),
8 * IPv6len,
},
{
nil,
ParseIP("2001:db8::1"),
8 * IPv6len,
},
}
func TestWindowsAddrPrefixLen(t *testing.T) {
for i, tt := range windowsAddrPrefixLenTests {
sort.Sort(byAddrLen(tt.pfxs))
l := addrPrefixLen(tt.pfxs, tt.ip)
if l != tt.out {
t.Errorf("#%d: got %d; want %d", i, l, tt.out)
}
sort.Sort(sort.Reverse(byAddrLen(tt.pfxs)))
l = addrPrefixLen(tt.pfxs, tt.ip)
if l != tt.out {
t.Errorf("#%d: got %d; want %d", i, l, tt.out)
}
}
}
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