fs/torrentfs_test.go

   1 package torrentfs
   2
   3 import (
   4         "bytes"
   5         "fmt"
   6         "io/ioutil"
   7         "log"
   8         "net"
   9         _ "net/http/pprof"
  10         "os"
  11         "path/filepath"
  12         "strings"
  13         "testing"
  14         "time"
  15
  16         "bazil.org/fuse"
  17         fusefs "bazil.org/fuse/fs"
  18         _ "github.com/anacrolix/envpprof"
  19         "github.com/anacrolix/missinggo"
  20         "github.com/stretchr/testify/assert"
  21         "github.com/stretchr/testify/require"
  22         netContext "golang.org/x/net/context"
  23
  24         "github.com/anacrolix/torrent"
  25         "github.com/anacrolix/torrent/data/mmap"
  26         "github.com/anacrolix/torrent/internal/testutil"
  27         "github.com/anacrolix/torrent/metainfo"
  28 )
  29
  30 func init() {
  31         log.SetFlags(log.Flags() | log.Lshortfile)
  32 }
  33
  34 func TestTCPAddrString(t *testing.T) {
  35         l, err := net.Listen("tcp4", "localhost:0")
  36         if err != nil {
  37                 t.Fatal(err)
  38         }
  39         defer l.Close()
  40         c, err := net.Dial("tcp", l.Addr().String())
  41         if err != nil {
  42                 t.Fatal(err)
  43         }
  44         defer c.Close()
  45         ras := c.RemoteAddr().String()
  46         ta := &net.TCPAddr{
  47                 IP:   net.IPv4(127, 0, 0, 1),
  48                 Port: missinggo.AddrPort(l.Addr()),
  49         }
  50         s := ta.String()
  51         if ras != s {
  52                 t.FailNow()
  53         }
  54 }
  55
  56 type testLayout struct {
  57         BaseDir   string
  58         MountDir  string
  59         Completed string
  60         Metainfo  *metainfo.MetaInfo
  61 }
  62
  63 func (me *testLayout) Destroy() error {
  64         return os.RemoveAll(me.BaseDir)
  65 }
  66
  67 func newGreetingLayout() (tl testLayout, err error) {
  68         tl.BaseDir, err = ioutil.TempDir("", "torrentfs")
  69         if err != nil {
  70                 return
  71         }
  72         tl.Completed = filepath.Join(tl.BaseDir, "completed")
  73         os.Mkdir(tl.Completed, 0777)
  74         tl.MountDir = filepath.Join(tl.BaseDir, "mnt")
  75         os.Mkdir(tl.MountDir, 0777)
  76         name := testutil.CreateDummyTorrentData(tl.Completed)
  77         metaInfoBuf := &bytes.Buffer{}
  78         testutil.CreateMetaInfo(name, metaInfoBuf)
  79         tl.Metainfo, err = metainfo.Load(metaInfoBuf)
  80         return
  81 }
  82
  83 // Unmount without first killing the FUSE connection while there are FUSE
  84 // operations blocked inside the filesystem code.
  85 func TestUnmountWedged(t *testing.T) {
  86         layout, err := newGreetingLayout()
  87         if err != nil {
  88                 t.Fatal(err)
  89         }
  90         defer func() {
  91                 err := layout.Destroy()
  92                 if err != nil {
  93                         t.Log(err)
  94                 }
  95         }()
  96         client, err := torrent.NewClient(&torrent.Config{
  97                 DataDir:         filepath.Join(layout.BaseDir, "incomplete"),
  98                 DisableTrackers: true,
  99                 NoDHT:           true,
 100                 ListenAddr:      "redonk",
 101                 DisableTCP:      true,
 102                 DisableUTP:      true,
 103
 104                 NoDefaultBlocklist: true,
 105         })
 106         if err != nil {
 107                 t.Fatal(err)
 108         }
 109         defer client.Close()
 110         client.AddTorrent(layout.Metainfo)
 111         fs := New(client)
 112         fuseConn, err := fuse.Mount(layout.MountDir)
 113         if err != nil {
 114                 msg := fmt.Sprintf("error mounting: %s", err)
 115                 if strings.Contains(err.Error(), "fuse") || err.Error() == "exit status 71" {
 116                         t.Skip(msg)
 117                 }
 118                 t.Fatal(msg)
 119         }
 120         go func() {
 121                 server := fusefs.New(fuseConn, &fusefs.Config{
 122                         Debug: func(msg interface{}) {
 123                                 t.Log(msg)
 124                         },
 125                 })
 126                 server.Serve(fs)
 127         }()
 128         <-fuseConn.Ready
 129         if err := fuseConn.MountError; err != nil {
 130                 t.Fatalf("mount error: %s", err)
 131         }
 132         // Read the greeting file, though it will never be available. This should
 133         // "wedge" FUSE, requiring the fs object to be forcibly destroyed. The
 134         // read call will return with a FS error.
 135         go func() {
 136                 _, err := ioutil.ReadFile(filepath.Join(layout.MountDir, layout.Metainfo.Info.Name))
 137                 if err == nil {
 138                         t.Fatal("expected error reading greeting")
 139                 }
 140         }()
 141
 142         // Wait until the read has blocked inside the filesystem code.
 143         fs.mu.Lock()
 144         for fs.blockedReads != 1 {
 145                 fs.event.Wait()
 146         }
 147         fs.mu.Unlock()
 148
 149         fs.Destroy()
 150
 151         for {
 152                 err = fuse.Unmount(layout.MountDir)
 153                 if err != nil {
 154                         t.Logf("error unmounting: %s", err)
 155                         time.Sleep(time.Millisecond)
 156                 } else {
 157                         break
 158                 }
 159         }
 160
 161         err = fuseConn.Close()
 162         if err != nil {
 163                 t.Fatalf("error closing fuse conn: %s", err)
 164         }
 165 }
 166
 167 func TestDownloadOnDemand(t *testing.T) {
 168         layout, err := newGreetingLayout()
 169         require.NoError(t, err)
 170         defer layout.Destroy()
 171         seeder, err := torrent.NewClient(&torrent.Config{
 172                 DataDir:         layout.Completed,
 173                 DisableTrackers: true,
 174                 NoDHT:           true,
 175                 ListenAddr:      "localhost:0",
 176                 Seed:            true,
 177
 178                 NoDefaultBlocklist: true,
 179                 // Ensure that the metainfo is obtained over the wire, since we added
 180                 // the torrent to the seeder by magnet.
 181                 DisableMetainfoCache: true,
 182         })
 183         seeder.SetIPBlockList(nil)
 184         require.NoError(t, err)
 185         defer seeder.Close()
 186         testutil.ExportStatusWriter(seeder, "s")
 187         _, err = seeder.AddMagnet(fmt.Sprintf("magnet:?xt=urn:btih:%x", layout.Metainfo.Info.Hash))
 188         require.NoError(t, err)
 189         leecher, err := torrent.NewClient(&torrent.Config{
 190                 DisableTrackers: true,
 191                 NoDHT:           true,
 192                 ListenAddr:      "localhost:0",
 193                 DisableTCP:      true,
 194
 195                 NoDefaultBlocklist: true,
 196
 197                 TorrentDataOpener: func(info *metainfo.Info) torrent.Data {
 198                         ret, _ := mmap.TorrentData(info, filepath.Join(layout.BaseDir, "download"))
 199                         return ret
 200                 },
 201
 202                 // This can be used to check if clients can connect to other clients
 203                 // with the same ID.
 204
 205                 // PeerID: seeder.PeerID(),
 206         })
 207         leecher.SetIPBlockList(nil)
 208         testutil.ExportStatusWriter(leecher, "l")
 209         defer leecher.Close()
 210         leecherTorrent, _ := leecher.AddTorrent(layout.Metainfo)
 211         leecherTorrent.AddPeers([]torrent.Peer{
 212                 torrent.Peer{
 213                         IP:   missinggo.AddrIP(seeder.ListenAddr()),
 214                         Port: missinggo.AddrPort(seeder.ListenAddr()),
 215                 },
 216         })
 217         fs := New(leecher)
 218         defer fs.Destroy()
 219         root, _ := fs.Root()
 220         node, _ := root.(fusefs.NodeStringLookuper).Lookup(netContext.Background(), "greeting")
 221         var attr fuse.Attr
 222         node.Attr(netContext.Background(), &attr)
 223         size := attr.Size
 224         resp := &fuse.ReadResponse{
 225                 Data: make([]byte, size),
 226         }
 227         node.(fusefs.HandleReader).Read(netContext.Background(), &fuse.ReadRequest{
 228                 Size: int(size),
 229         }, resp)
 230         assert.EqualValues(t, testutil.GreetingFileContents, resp.Data)
 231 }
 232
 233 func TestIsSubPath(t *testing.T) {
 234         for _, case_ := range []struct {
 235                 parent, child string
 236                 is            bool
 237         }{
 238                 {"", "", false},
 239                 {"", "/", true},
 240                 {"a/b", "a/bc", false},
 241                 {"a/b", "a/b", false},
 242                 {"a/b", "a/b/c", true},
 243                 {"a/b", "a//b", false},
 244         } {
 245                 assert.Equal(t, case_.is, isSubPath(case_.parent, case_.child))
 246         }
 247 }