630 lines
15 KiB
Go
630 lines
15 KiB
Go
package aghnet
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import (
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"io/fs"
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"net"
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"path"
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"strings"
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"sync/atomic"
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"testing"
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"testing/fstest"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
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"github.com/AdguardTeam/golibs/errors"
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"github.com/AdguardTeam/golibs/netutil"
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"github.com/AdguardTeam/golibs/stringutil"
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"github.com/AdguardTeam/golibs/testutil"
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"github.com/AdguardTeam/urlfilter"
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"github.com/AdguardTeam/urlfilter/rules"
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"github.com/miekg/dns"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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const (
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nl = "\n"
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sp = " "
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)
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func TestNewHostsContainer(t *testing.T) {
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const dirname = "dir"
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const filename = "file1"
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p := path.Join(dirname, filename)
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testFS := fstest.MapFS{
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p: &fstest.MapFile{Data: []byte("127.0.0.1 localhost")},
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}
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testCases := []struct {
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wantErr error
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name string
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paths []string
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}{{
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wantErr: nil,
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name: "one_file",
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paths: []string{p},
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}, {
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wantErr: ErrNoHostsPaths,
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name: "no_files",
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paths: []string{},
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}, {
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wantErr: ErrNoHostsPaths,
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name: "non-existent_file",
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paths: []string{path.Join(dirname, filename+"2")},
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}, {
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wantErr: nil,
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name: "whole_dir",
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paths: []string{dirname},
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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onAdd := func(name string) (err error) {
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assert.Contains(t, tc.paths, name)
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return nil
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}
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var eventsCalledCounter uint32
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eventsCh := make(chan struct{})
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onEvents := func() (e <-chan struct{}) {
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assert.Equal(t, uint32(1), atomic.AddUint32(&eventsCalledCounter, 1))
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return eventsCh
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}
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hc, err := NewHostsContainer(0, testFS, &aghtest.FSWatcher{
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OnEvents: onEvents,
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OnAdd: onAdd,
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OnClose: func() (err error) { panic("not implemented") },
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}, tc.paths...)
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if tc.wantErr != nil {
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require.ErrorIs(t, err, tc.wantErr)
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assert.Nil(t, hc)
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return
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}
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testutil.CleanupAndRequireSuccess(t, hc.Close)
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require.NoError(t, err)
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require.NotNil(t, hc)
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assert.NotNil(t, <-hc.Upd())
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eventsCh <- struct{}{}
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assert.Equal(t, uint32(1), atomic.LoadUint32(&eventsCalledCounter))
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})
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}
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t.Run("nil_fs", func(t *testing.T) {
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require.Panics(t, func() {
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_, _ = NewHostsContainer(0, nil, &aghtest.FSWatcher{
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// Those shouldn't panic.
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OnEvents: func() (e <-chan struct{}) { return nil },
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OnAdd: func(name string) (err error) { return nil },
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OnClose: func() (err error) { return nil },
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}, p)
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})
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})
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t.Run("nil_watcher", func(t *testing.T) {
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require.Panics(t, func() {
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_, _ = NewHostsContainer(0, testFS, nil, p)
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})
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})
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t.Run("err_watcher", func(t *testing.T) {
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const errOnAdd errors.Error = "error"
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errWatcher := &aghtest.FSWatcher{
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OnEvents: func() (e <-chan struct{}) { panic("not implemented") },
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OnAdd: func(name string) (err error) { return errOnAdd },
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OnClose: func() (err error) { panic("not implemented") },
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}
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hc, err := NewHostsContainer(0, testFS, errWatcher, p)
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require.ErrorIs(t, err, errOnAdd)
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assert.Nil(t, hc)
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})
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}
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func TestHostsContainer_refresh(t *testing.T) {
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// TODO(e.burkov): Test the case with no actual updates.
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ip := net.IP{127, 0, 0, 1}
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ipStr := ip.String()
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testFS := fstest.MapFS{"dir/file1": &fstest.MapFile{Data: []byte(ipStr + ` hostname` + nl)}}
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// event is a convenient alias for an empty struct{} to emit test events.
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type event = struct{}
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eventsCh := make(chan event, 1)
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t.Cleanup(func() { close(eventsCh) })
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w := &aghtest.FSWatcher{
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OnEvents: func() (e <-chan event) { return eventsCh },
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OnAdd: func(name string) (err error) {
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assert.Equal(t, "dir", name)
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return nil
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},
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OnClose: func() (err error) { panic("not implemented") },
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}
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hc, err := NewHostsContainer(0, testFS, w, "dir")
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require.NoError(t, err)
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testutil.CleanupAndRequireSuccess(t, hc.Close)
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checkRefresh := func(t *testing.T, want *HostsRecord) {
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t.Helper()
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var ok bool
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var upd *netutil.IPMap
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select {
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case upd, ok = <-hc.Upd():
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require.True(t, ok)
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require.NotNil(t, upd)
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case <-time.After(1 * time.Second):
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t.Fatal("did not receive after 1s")
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}
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assert.Equal(t, 1, upd.Len())
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v, ok := upd.Get(ip)
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require.True(t, ok)
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require.IsType(t, (*HostsRecord)(nil), v)
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rec, _ := v.(*HostsRecord)
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require.NotNil(t, rec)
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assert.Truef(t, rec.Equal(want), "%+v != %+v", rec, want)
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}
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t.Run("initial_refresh", func(t *testing.T) {
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checkRefresh(t, &HostsRecord{
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Aliases: stringutil.NewSet(),
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Canonical: "hostname",
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})
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})
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t.Run("second_refresh", func(t *testing.T) {
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testFS["dir/file2"] = &fstest.MapFile{Data: []byte(ipStr + ` alias` + nl)}
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eventsCh <- event{}
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checkRefresh(t, &HostsRecord{
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Aliases: stringutil.NewSet("alias"),
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Canonical: "hostname",
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})
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})
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t.Run("double_refresh", func(t *testing.T) {
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// Make a change once.
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testFS["dir/file1"] = &fstest.MapFile{Data: []byte(ipStr + ` alias` + nl)}
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eventsCh <- event{}
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// Require the changes are written.
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require.Eventually(t, func() bool {
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res, ok := hc.MatchRequest(&urlfilter.DNSRequest{
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Hostname: "hostname",
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DNSType: dns.TypeA,
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})
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return !ok && res.DNSRewrites() == nil
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}, 5*time.Second, time.Second/2)
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// Make a change again.
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testFS["dir/file2"] = &fstest.MapFile{Data: []byte(ipStr + ` hostname` + nl)}
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eventsCh <- event{}
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// Require the changes are written.
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require.Eventually(t, func() bool {
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res, ok := hc.MatchRequest(&urlfilter.DNSRequest{
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Hostname: "hostname",
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DNSType: dns.TypeA,
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})
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return !ok && res.DNSRewrites() != nil
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}, 5*time.Second, time.Second/2)
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assert.Len(t, hc.Upd(), 1)
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})
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}
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func TestHostsContainer_PathsToPatterns(t *testing.T) {
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gsfs := fstest.MapFS{
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"dir_0/file_1": &fstest.MapFile{Data: []byte{1}},
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"dir_0/file_2": &fstest.MapFile{Data: []byte{2}},
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"dir_0/dir_1/file_3": &fstest.MapFile{Data: []byte{3}},
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}
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testCases := []struct {
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name string
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paths []string
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want []string
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}{{
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name: "no_paths",
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paths: nil,
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want: nil,
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}, {
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name: "single_file",
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paths: []string{"dir_0/file_1"},
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want: []string{"dir_0/file_1"},
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}, {
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name: "several_files",
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paths: []string{"dir_0/file_1", "dir_0/file_2"},
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want: []string{"dir_0/file_1", "dir_0/file_2"},
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}, {
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name: "whole_dir",
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paths: []string{"dir_0"},
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want: []string{"dir_0/*"},
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}, {
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name: "file_and_dir",
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paths: []string{"dir_0/file_1", "dir_0/dir_1"},
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want: []string{"dir_0/file_1", "dir_0/dir_1/*"},
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}, {
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name: "non-existing",
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paths: []string{path.Join("dir_0", "file_3")},
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want: nil,
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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patterns, err := pathsToPatterns(gsfs, tc.paths)
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require.NoError(t, err)
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assert.Equal(t, tc.want, patterns)
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})
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}
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t.Run("bad_file", func(t *testing.T) {
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const errStat errors.Error = "bad file"
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badFS := &aghtest.StatFS{
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OnStat: func(name string) (fs.FileInfo, error) {
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return nil, errStat
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},
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}
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_, err := pathsToPatterns(badFS, []string{""})
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assert.ErrorIs(t, err, errStat)
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})
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}
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func TestHostsContainer_Translate(t *testing.T) {
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stubWatcher := aghtest.FSWatcher{
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OnEvents: func() (e <-chan struct{}) { return nil },
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OnAdd: func(name string) (err error) { return nil },
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OnClose: func() (err error) { panic("not implemented") },
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}
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require.NoError(t, fstest.TestFS(testdata, "etc_hosts"))
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hc, err := NewHostsContainer(0, testdata, &stubWatcher, "etc_hosts")
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require.NoError(t, err)
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testutil.CleanupAndRequireSuccess(t, hc.Close)
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testCases := []struct {
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name string
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rule string
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wantTrans []string
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}{{
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name: "simplehost",
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rule: "|simplehost^$dnsrewrite=NOERROR;A;1.0.0.1",
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wantTrans: []string{"1.0.0.1", "simplehost"},
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}, {
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name: "hello",
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rule: "|hello^$dnsrewrite=NOERROR;A;1.0.0.0",
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wantTrans: []string{"1.0.0.0", "hello", "hello.world"},
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}, {
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name: "hello-alias",
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rule: "|hello.world.again^$dnsrewrite=NOERROR;A;1.0.0.0",
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wantTrans: []string{"1.0.0.0", "hello.world.again"},
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}, {
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name: "simplehost_v6",
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rule: "|simplehost^$dnsrewrite=NOERROR;AAAA;::1",
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wantTrans: []string{"::1", "simplehost"},
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}, {
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name: "hello_v6",
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rule: "|hello^$dnsrewrite=NOERROR;AAAA;::",
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wantTrans: []string{"::", "hello", "hello.world"},
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}, {
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name: "hello_v6-alias",
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rule: "|hello.world.again^$dnsrewrite=NOERROR;AAAA;::",
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wantTrans: []string{"::", "hello.world.again"},
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}, {
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name: "simplehost_ptr",
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rule: "|1.0.0.1.in-addr.arpa^$dnsrewrite=NOERROR;PTR;simplehost.",
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wantTrans: []string{"1.0.0.1", "simplehost"},
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}, {
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name: "hello_ptr",
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rule: "|0.0.0.1.in-addr.arpa^$dnsrewrite=NOERROR;PTR;hello.",
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wantTrans: []string{"1.0.0.0", "hello", "hello.world"},
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}, {
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name: "hello_ptr-alias",
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rule: "|0.0.0.1.in-addr.arpa^$dnsrewrite=NOERROR;PTR;hello.world.again.",
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wantTrans: []string{"1.0.0.0", "hello.world.again"},
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}, {
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name: "simplehost_ptr_v6",
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rule: "|1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" +
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"^$dnsrewrite=NOERROR;PTR;simplehost.",
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wantTrans: []string{"::1", "simplehost"},
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}, {
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name: "hello_ptr_v6",
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rule: "|0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" +
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"^$dnsrewrite=NOERROR;PTR;hello.",
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wantTrans: []string{"::", "hello", "hello.world"},
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}, {
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name: "hello_ptr_v6-alias",
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rule: "|0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" +
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"^$dnsrewrite=NOERROR;PTR;hello.world.again.",
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wantTrans: []string{"::", "hello.world.again"},
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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got := stringutil.NewSet(strings.Fields(hc.Translate(tc.rule))...)
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assert.True(t, stringutil.NewSet(tc.wantTrans...).Equal(got))
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})
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}
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}
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func TestHostsContainer(t *testing.T) {
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const listID = 1234
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require.NoError(t, fstest.TestFS(testdata, "etc_hosts"))
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testCases := []struct {
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req *urlfilter.DNSRequest
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name string
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want []*rules.DNSRewrite
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}{{
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req: &urlfilter.DNSRequest{
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Hostname: "simplehost",
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DNSType: dns.TypeA,
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},
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name: "simple",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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Value: net.IPv4(1, 0, 0, 1),
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RRType: dns.TypeA,
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}, {
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RCode: dns.RcodeSuccess,
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Value: net.ParseIP("::1"),
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RRType: dns.TypeAAAA,
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}},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "hello.world",
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DNSType: dns.TypeA,
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},
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name: "hello_alias",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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Value: net.IPv4(1, 0, 0, 0),
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RRType: dns.TypeA,
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}, {
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RCode: dns.RcodeSuccess,
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Value: net.ParseIP("::"),
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RRType: dns.TypeAAAA,
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}},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "hello.world.again",
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DNSType: dns.TypeA,
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},
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name: "other_line_alias",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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Value: net.IPv4(1, 0, 0, 0),
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RRType: dns.TypeA,
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}, {
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RCode: dns.RcodeSuccess,
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Value: net.ParseIP("::"),
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RRType: dns.TypeAAAA,
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}},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "say.hello",
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DNSType: dns.TypeA,
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},
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name: "hello_subdomain",
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want: []*rules.DNSRewrite{},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "say.hello.world",
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DNSType: dns.TypeA,
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},
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name: "hello_alias_subdomain",
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want: []*rules.DNSRewrite{},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "for.testing",
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DNSType: dns.TypeA,
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},
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name: "lots_of_aliases",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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RRType: dns.TypeA,
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Value: net.IPv4(1, 0, 0, 2),
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}, {
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RCode: dns.RcodeSuccess,
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RRType: dns.TypeAAAA,
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Value: net.ParseIP("::2"),
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}},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "1.0.0.1.in-addr.arpa",
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DNSType: dns.TypePTR,
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},
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name: "reverse",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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RRType: dns.TypePTR,
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Value: "simplehost.",
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}},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "nonexistent.example",
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DNSType: dns.TypeA,
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},
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name: "non-existing",
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want: []*rules.DNSRewrite{},
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "1.0.0.1.in-addr.arpa",
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DNSType: dns.TypeSRV,
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},
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name: "bad_type",
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want: nil,
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}, {
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req: &urlfilter.DNSRequest{
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Hostname: "domain",
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DNSType: dns.TypeA,
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},
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name: "issue_4216_4_6",
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want: []*rules.DNSRewrite{{
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RCode: dns.RcodeSuccess,
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RRType: dns.TypeA,
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Value: net.IPv4(4, 2, 1, 6),
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}, {
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RCode: dns.RcodeSuccess,
|
|
RRType: dns.TypeAAAA,
|
|
Value: net.ParseIP("::42"),
|
|
}},
|
|
}, {
|
|
req: &urlfilter.DNSRequest{
|
|
Hostname: "domain4",
|
|
DNSType: dns.TypeA,
|
|
},
|
|
name: "issue_4216_4",
|
|
want: []*rules.DNSRewrite{{
|
|
RCode: dns.RcodeSuccess,
|
|
RRType: dns.TypeA,
|
|
Value: net.IPv4(7, 5, 3, 1),
|
|
}, {
|
|
RCode: dns.RcodeSuccess,
|
|
RRType: dns.TypeA,
|
|
Value: net.IPv4(1, 3, 5, 7),
|
|
}},
|
|
}, {
|
|
req: &urlfilter.DNSRequest{
|
|
Hostname: "domain6",
|
|
DNSType: dns.TypeAAAA,
|
|
},
|
|
name: "issue_4216_6",
|
|
want: []*rules.DNSRewrite{{
|
|
RCode: dns.RcodeSuccess,
|
|
RRType: dns.TypeAAAA,
|
|
Value: net.ParseIP("::13"),
|
|
}, {
|
|
RCode: dns.RcodeSuccess,
|
|
RRType: dns.TypeAAAA,
|
|
Value: net.ParseIP("::31"),
|
|
}},
|
|
}}
|
|
|
|
stubWatcher := aghtest.FSWatcher{
|
|
OnEvents: func() (e <-chan struct{}) { return nil },
|
|
OnAdd: func(name string) (err error) { return nil },
|
|
OnClose: func() (err error) { panic("not implemented") },
|
|
}
|
|
|
|
hc, err := NewHostsContainer(listID, testdata, &stubWatcher, "etc_hosts")
|
|
require.NoError(t, err)
|
|
testutil.CleanupAndRequireSuccess(t, hc.Close)
|
|
|
|
for _, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
res, ok := hc.MatchRequest(tc.req)
|
|
require.False(t, ok)
|
|
|
|
if tc.want == nil {
|
|
assert.Nil(t, res)
|
|
|
|
return
|
|
}
|
|
|
|
require.NotNil(t, res)
|
|
|
|
rewrites := res.DNSRewrites()
|
|
require.Len(t, rewrites, len(tc.want))
|
|
|
|
for i, rewrite := range rewrites {
|
|
require.Equal(t, listID, rewrite.FilterListID)
|
|
|
|
rw := rewrite.DNSRewrite
|
|
require.NotNil(t, rw)
|
|
|
|
assert.Equal(t, tc.want[i], rw)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestUniqueRules_ParseLine(t *testing.T) {
|
|
ip := net.IP{127, 0, 0, 1}
|
|
ipStr := ip.String()
|
|
|
|
testCases := []struct {
|
|
name string
|
|
line string
|
|
wantIP net.IP
|
|
wantHosts []string
|
|
}{{
|
|
name: "simple",
|
|
line: ipStr + ` hostname`,
|
|
wantIP: ip,
|
|
wantHosts: []string{"hostname"},
|
|
}, {
|
|
name: "aliases",
|
|
line: ipStr + ` hostname alias`,
|
|
wantIP: ip,
|
|
wantHosts: []string{"hostname", "alias"},
|
|
}, {
|
|
name: "invalid_line",
|
|
line: ipStr,
|
|
wantIP: nil,
|
|
wantHosts: nil,
|
|
}, {
|
|
name: "invalid_line_hostname",
|
|
line: ipStr + ` # hostname`,
|
|
wantIP: ip,
|
|
wantHosts: nil,
|
|
}, {
|
|
name: "commented_aliases",
|
|
line: ipStr + ` hostname # alias`,
|
|
wantIP: ip,
|
|
wantHosts: []string{"hostname"},
|
|
}, {
|
|
name: "whole_comment",
|
|
line: `# ` + ipStr + ` hostname`,
|
|
wantIP: nil,
|
|
wantHosts: nil,
|
|
}, {
|
|
name: "partial_comment",
|
|
line: ipStr + ` host#name`,
|
|
wantIP: ip,
|
|
wantHosts: []string{"host"},
|
|
}, {
|
|
name: "empty",
|
|
line: ``,
|
|
wantIP: nil,
|
|
wantHosts: nil,
|
|
}}
|
|
|
|
for _, tc := range testCases {
|
|
hp := hostsParser{}
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
got, hosts := hp.parseLine(tc.line)
|
|
assert.True(t, tc.wantIP.Equal(got))
|
|
assert.Equal(t, tc.wantHosts, hosts)
|
|
})
|
|
}
|
|
}
|