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firewall_test.go
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firewall_test.go
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// Copyright (c) 2021 The Inet.Af 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 wf
import (
"os"
"sort"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"golang.org/x/sys/windows"
)
func skipIfUnprivileged(t *testing.T) {
if !windows.GetCurrentProcessToken().IsElevated() {
if os.Getenv("CI") != "" {
t.Fatal("test requires admin privileges")
}
t.Skipf("skipping test that requires admin privileges")
}
}
func TestSession(t *testing.T) {
skipIfUnprivileged(t)
tests := []struct {
name string
opts *Options
}{
{
name: "nil",
opts: nil,
},
{
name: "name_only",
opts: &Options{
Name: "test",
},
},
{
name: "name_and_desc",
opts: &Options{
Name: "test2",
Description: "unit test session",
},
},
{
name: "dynamic",
opts: &Options{
Name: "test2",
Dynamic: true,
},
},
{
name: "tx_timeout",
opts: &Options{
Name: "test2",
TransactionStartTimeout: 5 * time.Minute,
},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
sess, err := New(test.opts)
if err != nil {
t.Fatalf("failed to open session: %v", err)
}
if err := sess.Close(); err != nil {
t.Errorf("closing session: %v", err)
}
})
}
}
func TestLayers(t *testing.T) {
skipIfUnprivileged(t)
s, err := New(nil)
if err != nil {
t.Fatal(err)
}
defer s.Close()
layers, err := s.Layers()
if err != nil {
t.Fatalf("getting layers: %v", err)
}
// Try to find a couple of the well-known layers that Windows
// should definitely have.
wantLayers := map[LayerID]*Layer{
LayerALEAuthRecvAcceptV4: {
ID: LayerALEAuthRecvAcceptV4,
KernelID: 44,
Name: "ALE Receive/Accept v4 Layer",
DefaultSublayer: guidSublayerUniversal,
Fields: []*Field{
{FieldALEAppID, typeString},
{FieldALENAPContext, typeUint32},
{FieldALEPackageID, typeSID},
{FieldALERemoteMachineID, typeSecurityDescriptor},
{FieldALERemoteUserID, typeSecurityDescriptor},
{FieldALESecurityAttributeFqbnValue, typeBytes},
{FieldALESioFirewallSystemPort, typeUint32},
{FieldALEUserID, typeSecurityDescriptor},
{FieldArrivalInterfaceIndex, typeUint32},
{FieldArrivalInterfaceType, typeUint32},
{FieldArrivalTunnelType, typeUint32},
{FieldBitmapIPLocalAddress, typeBitmapIndex},
{FieldBitmapIPLocalPort, typeBitmapIndex},
{FieldBitmapIPRemoteAddress, typeBitmapIndex},
{FieldBitmapIPRemotePort, typeBitmapIndex},
{FieldCompartmentID, typeUint32},
{FieldCurrentProfileID, typeUint32},
{FieldFlags, typeUint32},
{FieldInterfaceIndex, typeUint32},
{FieldInterfaceQuarantineEpoch, typeUint64},
{FieldInterfaceType, typeUint32},
{FieldIPArrivalInterface, typeUint64},
{FieldIPLocalAddress, typeIP},
{FieldIPLocalAddressType, typeUint8},
{FieldIPLocalInterface, typeUint64},
{FieldIPLocalPort, typeUint16},
{FieldIPNexthopInterface, typeUint64},
{FieldIPProtocol, typeUint8},
{FieldIPRemoteAddress, typeIP},
{FieldIPRemotePort, typeUint16},
{FieldNexthopInterfaceIndex, typeUint32},
{FieldNexthopInterfaceType, typeUint32},
{FieldNexthopSubInterfaceIndex, typeUint32},
{FieldNexthopTunnelType, typeUint32},
{FieldOriginalICMPType, typeUint16},
{FieldOriginalProfileID, typeUint32},
{FieldReauthorizeReason, typeUint32},
{FieldSubInterfaceIndex, typeUint32},
{FieldTunnelType, typeUint32},
},
},
LayerStreamV4Discard: {
ID: LayerStreamV4Discard,
KernelID: 21,
Name: "Stream v4 Discard Layer",
DefaultSublayer: guidSublayerUniversal,
Fields: []*Field{
{FieldCompartmentID, typeUint32},
{FieldDirection, typeUint32},
{FieldFlags, typeUint32},
{FieldIPLocalAddress, typeIP},
{FieldIPLocalAddressType, typeUint8},
{FieldIPLocalPort, typeUint16},
{FieldIPRemoteAddress, typeIP},
{FieldIPRemotePort, typeUint16},
},
},
}
for guid, want := range wantLayers {
found := false
for _, got := range layers {
if got.ID != guid {
continue
}
found = true
sort.Slice(got.Fields, func(i, j int) bool {
return got.Fields[i].ID.String() < got.Fields[j].ID.String()
})
fieldCmp := func(a, b *Field) bool {
return a.ID == b.ID && a.Type == b.Type
}
if diff := cmp.Diff(got, want, cmp.Comparer(fieldCmp)); diff != "" {
t.Errorf("unexpected layer def (-got+want):\n%s", diff)
}
break
}
if !found {
t.Errorf("layer %s (%s) not found", guid, windows.GUID(guid))
}
}
}
func TestSublayers(t *testing.T) {
skipIfUnprivileged(t)
s, err := New(&Options{
Dynamic: true,
})
if err != nil {
t.Fatal(err)
}
defer s.Close()
guid, err := windows.GenerateGUID()
if err != nil {
t.Fatal(err)
}
sl := &Sublayer{
ID: SublayerID(guid),
Name: "test sublayer",
Description: "a test sublayer",
ProviderData: []byte("byte blob"),
Weight: 0x4242,
}
if err := s.AddSublayer(sl); err != nil {
t.Fatalf("add sublayer failed: %v", err)
}
sublayers, err := s.Sublayers(ProviderID{})
if err != nil {
t.Fatalf("get sublayers failed: %v", err)
}
found := false
for _, got := range sublayers {
if got.ID != sl.ID {
continue
}
found = true
if diff := cmp.Diff(got, sl); diff != "" {
t.Fatalf("sublayer is wrong (-got+want):\n%s", diff)
}
break
}
if !found {
t.Fatal("sublayer added but not found")
}
if err := s.DeleteSublayer(sl.ID); err != nil {
t.Fatalf("delete sublayer failed: %v", err)
}
sublayers, err = s.Sublayers(ProviderID{})
if err != nil {
t.Fatalf("get sublayers failed: %v", err)
}
for _, got := range sublayers {
if got.ID == sl.ID {
t.Fatalf("deleted sublayer but it's still there: %#v", got)
}
}
}
func TestProviders(t *testing.T) {
skipIfUnprivileged(t)
s, err := New(&Options{
Dynamic: true,
})
if err != nil {
t.Fatal(err)
}
defer s.Close()
guid, err := windows.GenerateGUID()
if err != nil {
t.Fatal(err)
}
p := &Provider{
ID: ProviderID(guid),
Name: "test provider",
Description: "a test provider",
Data: []byte("byte blob"),
}
if err := s.AddProvider(p); err != nil {
t.Fatalf("add provider failed: %v", err)
}
providers, err := s.Providers()
if err != nil {
t.Fatalf("get providers failed: %v", err)
}
found := false
for _, got := range providers {
if got.ID != p.ID {
continue
}
found = true
if diff := cmp.Diff(got, p); diff != "" {
t.Fatalf("provider is wrong (-got+want):\n%s", diff)
}
break
}
if !found {
t.Fatal("provider added but not found")
}
if err := s.DeleteProvider(p.ID); err != nil {
t.Fatalf("delete provider failed: %v", err)
}
providers, err = s.Providers()
if err != nil {
t.Fatalf("get providers failed: %v", err)
}
for _, got := range providers {
if got.ID == p.ID {
t.Fatalf("deleted provider but it's still there: %#v", got)
}
}
}