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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 darwin dragonfly freebsd netbsd openbsd
package route
import (
"os"
"syscall"
"testing"
"time"
)
func TestFetchAndParseRIB(t *testing.T) {
for _, typ := range []RIBType{sysNET_RT_DUMP, sysNET_RT_IFLIST} {
var lastErr error
var ms []Message
for _, af := range []int{sysAF_UNSPEC, sysAF_INET, sysAF_INET6} {
rs, err := fetchAndParseRIB(af, typ)
if err != nil {
lastErr = err
continue
}
ms = append(ms, rs...)
}
if len(ms) == 0 && lastErr != nil {
t.Error(typ, lastErr)
continue
}
ss, err := msgs(ms).validate()
if err != nil {
t.Error(typ, err)
continue
}
for _, s := range ss {
t.Log(typ, s)
}
}
}
var (
rtmonSock int
rtmonErr error
)
func init() {
// We need to keep rtmonSock alive to avoid treading on
// recycled socket descriptors.
rtmonSock, rtmonErr = syscall.Socket(sysAF_ROUTE, sysSOCK_RAW, sysAF_UNSPEC)
}
// TestMonitorAndParseRIB leaks a worker goroutine and a socket
// descriptor but that's intentional.
func TestMonitorAndParseRIB(t *testing.T) {
if testing.Short() || os.Getuid() != 0 {
t.Skip("must be root")
}
if rtmonErr != nil {
t.Fatal(rtmonErr)
}
// We suppose that using an IPv4 link-local address and the
// dot1Q ID for Token Ring and FDDI doesn't harm anyone.
pv := &propVirtual{addr: "169.254.0.1", mask: "255.255.255.0"}
if err := pv.configure(1002); err != nil {
t.Skip(err)
}
if err := pv.setup(); err != nil {
t.Skip(err)
}
pv.teardown()
go func() {
b := make([]byte, os.Getpagesize())
for {
// There's no easy way to unblock this read
// call because the routing message exchange
// over routing socket is a connectionless
// message-oriented protocol, no control plane
// for signaling connectivity, and we cannot
// use the net package of standard library due
// to the lack of support for routing socket
// and circular dependency.
n, err := syscall.Read(rtmonSock, b)
if err != nil {
return
}
ms, err := ParseRIB(0, b[:n])
if err != nil {
t.Error(err)
return
}
ss, err := msgs(ms).validate()
if err != nil {
t.Error(err)
return
}
for _, s := range ss {
t.Log(s)
}
}
}()
for _, vid := range []int{1002, 1003, 1004, 1005} {
pv := &propVirtual{addr: "169.254.0.1", mask: "255.255.255.0"}
if err := pv.configure(vid); err != nil {
t.Fatal(err)
}
if err := pv.setup(); err != nil {
t.Fatal(err)
}
time.Sleep(200 * time.Millisecond)
if err := pv.teardown(); err != nil {
t.Fatal(err)
}
time.Sleep(200 * time.Millisecond)
}
}
func TestParseRIBWithFuzz(t *testing.T) {
for _, fuzz := range []string{
"0\x00\x05\x050000000000000000" +
"00000000000000000000" +
"00000000000000000000" +
"00000000000000000000" +
"0000000000000\x02000000" +
"00000000",
"\x02\x00\x05\f0000000000000000" +
"0\x0200000000000000",
"\x02\x00\x05\x100000000000000\x1200" +
"0\x00\xff\x00",
"\x02\x00\x05\f0000000000000000" +
"0\x12000\x00\x02\x0000",
"\x00\x00\x00\x01\x00",
"00000",
} {
for typ := RIBType(0); typ < 256; typ++ {
ParseRIB(typ, []byte(fuzz))
}
}
}
func TestRouteMessage(t *testing.T) {
s, err := syscall.Socket(sysAF_ROUTE, sysSOCK_RAW, sysAF_UNSPEC)
if err != nil {
t.Fatal(err)
}
defer syscall.Close(s)
var ms []RouteMessage
for _, af := range []int{sysAF_INET, sysAF_INET6} {
if _, err := fetchAndParseRIB(af, sysNET_RT_DUMP); err != nil {
t.Log(err)
continue
}
switch af {
case sysAF_INET:
ms = append(ms, []RouteMessage{
{
Type: sysRTM_GET,
Addrs: []Addr{
&Inet4Addr{IP: [4]byte{127, 0, 0, 1}},
nil,
nil,
nil,
&LinkAddr{},
&Inet4Addr{},
nil,
&Inet4Addr{},
},
},
{
Type: sysRTM_GET,
Addrs: []Addr{
&Inet4Addr{IP: [4]byte{127, 0, 0, 1}},
},
},
}...)
case sysAF_INET6:
ms = append(ms, []RouteMessage{
{
Type: sysRTM_GET,
Addrs: []Addr{
&Inet6Addr{IP: [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}},
nil,
nil,
nil,
&LinkAddr{},
&Inet6Addr{},
nil,
&Inet6Addr{},
},
},
{
Type: sysRTM_GET,
Addrs: []Addr{
&Inet6Addr{IP: [16]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}},
},
},
}...)
}
}
for i, m := range ms {
m.ID = uintptr(os.Getpid())
m.Seq = i + 1
wb, err := m.Marshal()
if err != nil {
t.Fatalf("%v: %v", m, err)
}
if _, err := syscall.Write(s, wb); err != nil {
t.Fatalf("%v: %v", m, err)
}
rb := make([]byte, os.Getpagesize())
n, err := syscall.Read(s, rb)
if err != nil {
t.Fatalf("%v: %v", m, err)
}
rms, err := ParseRIB(0, rb[:n])
if err != nil {
t.Fatalf("%v: %v", m, err)
}
for _, rm := range rms {
err := rm.(*RouteMessage).Err
if err != nil {
t.Errorf("%v: %v", m, err)
}
}
ss, err := msgs(rms).validate()
if err != nil {
t.Fatalf("%v: %v", m, err)
}
for _, s := range ss {
t.Log(s)
}
}
}
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