fs/torrentfs_test.go

   1 package torrentfs
   2
   3 import (
   4         "bytes"
   5         "fmt"
   6         "io/ioutil"
   7         "log"
   8         "net"
   9         "net/http"
  10         _ "net/http/pprof"
  11         "os"
  12         "path/filepath"
  13         "strconv"
  14         "strings"
  15         "testing"
  16         "time"
  17
  18         "bazil.org/fuse"
  19         fusefs "bazil.org/fuse/fs"
  20         netContext "golang.org/x/net/context"
  21
  22         "github.com/anacrolix/torrent"
  23         "github.com/anacrolix/torrent/data"
  24         "github.com/anacrolix/torrent/data/mmap"
  25         "github.com/anacrolix/torrent/internal/testutil"
  26         "github.com/anacrolix/torrent/metainfo"
  27         "github.com/anacrolix/torrent/util"
  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: util.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
 101                 NoDefaultBlocklist: true,
 102         })
 103         defer client.Close()
 104         client.AddTorrent(layout.Metainfo)
 105         fs := New(client)
 106         fuseConn, err := fuse.Mount(layout.MountDir)
 107         if err != nil {
 108                 msg := fmt.Sprintf("error mounting: %s", err)
 109                 if strings.Contains(err.Error(), "fuse") || err.Error() == "exit status 71" {
 110                         t.Skip(msg)
 111                 }
 112                 t.Fatal(msg)
 113         }
 114         go func() {
 115                 server := fusefs.Server{
 116                         FS: fs,
 117                         Debug: func(msg interface{}) {
 118                                 t.Log(msg)
 119                         },
 120                 }
 121                 server.Serve(fuseConn)
 122         }()
 123         <-fuseConn.Ready
 124         if err := fuseConn.MountError; err != nil {
 125                 t.Fatalf("mount error: %s", err)
 126         }
 127         // Read the greeting file, though it will never be available. This should
 128         // "wedge" FUSE, requiring the fs object to be forcibly destroyed. The
 129         // read call will return with a FS error.
 130         go func() {
 131                 _, err := ioutil.ReadFile(filepath.Join(layout.MountDir, layout.Metainfo.Info.Name))
 132                 if err == nil {
 133                         t.Fatal("expected error reading greeting")
 134                 }
 135         }()
 136
 137         // Wait until the read has blocked inside the filesystem code.
 138         fs.mu.Lock()
 139         for fs.blockedReads != 1 {
 140                 fs.event.Wait()
 141         }
 142         fs.mu.Unlock()
 143
 144         fs.Destroy()
 145
 146         for {
 147                 err = fuse.Unmount(layout.MountDir)
 148                 if err != nil {
 149                         t.Logf("error unmounting: %s", err)
 150                         time.Sleep(time.Millisecond)
 151                 } else {
 152                         break
 153                 }
 154         }
 155
 156         err = fuseConn.Close()
 157         if err != nil {
 158                 t.Fatalf("error closing fuse conn: %s", err)
 159         }
 160 }
 161
 162 func TestDownloadOnDemand(t *testing.T) {
 163         layout, err := newGreetingLayout()
 164         if err != nil {
 165                 t.Fatal(err)
 166         }
 167         defer layout.Destroy()
 168         seeder, err := torrent.NewClient(&torrent.Config{
 169                 DataDir:         layout.Completed,
 170                 DisableTrackers: true,
 171                 NoDHT:           true,
 172                 ListenAddr:      ":0",
 173                 Seed:            true,
 174
 175                 NoDefaultBlocklist: true,
 176                 // Ensure that the metainfo is obtained over the wire, since we added
 177                 // the torrent to the seeder by magnet.
 178                 DisableMetainfoCache: true,
 179         })
 180         if err != nil {
 181                 t.Fatalf("error creating seeder client: %s", err)
 182         }
 183         seeder.SetIPBlockList(nil)
 184         defer seeder.Close()
 185         http.HandleFunc("/seeder", func(w http.ResponseWriter, req *http.Request) {
 186                 seeder.WriteStatus(w)
 187         })
 188         _, err = seeder.AddMagnet(fmt.Sprintf("magnet:?xt=urn:btih:%x", layout.Metainfo.Info.Hash))
 189         if err != nil {
 190                 t.Fatal(err)
 191         }
 192         leecher, err := torrent.NewClient(&torrent.Config{
 193                 DisableTrackers: true,
 194                 NoDHT:           true,
 195                 ListenAddr:      ":0",
 196                 DisableTCP:      true,
 197
 198                 NoDefaultBlocklist: true,
 199
 200                 TorrentDataOpener: func(info *metainfo.Info) data.Data {
 201                         ret, _ := mmap.TorrentData(info, filepath.Join(layout.BaseDir, "download"))
 202                         return ret
 203                 },
 204
 205                 // This can be used to check if clients can connect to other clients
 206                 // with the same ID.
 207
 208                 // PeerID: seeder.PeerID(),
 209         })
 210         leecher.SetIPBlockList(nil)
 211         http.HandleFunc("/leecher", func(w http.ResponseWriter, req *http.Request) {
 212                 leecher.WriteStatus(w)
 213         })
 214         defer leecher.Close()
 215         leecherTorrent, _ := leecher.AddTorrent(layout.Metainfo)
 216         leecherTorrent.AddPeers([]torrent.Peer{func() torrent.Peer {
 217                 _, port, err := net.SplitHostPort(seeder.ListenAddr().String())
 218                 if err != nil {
 219                         panic(err)
 220                 }
 221                 portInt64, err := strconv.ParseInt(port, 0, 0)
 222                 if err != nil {
 223                         panic(err)
 224                 }
 225                 return torrent.Peer{
 226                         IP: func() net.IP {
 227                                 ret, _ := net.ResolveIPAddr("ip", "localhost")
 228                                 return ret.IP
 229                         }(),
 230                         Port: int(portInt64),
 231                 }
 232         }()})
 233         fs := New(leecher)
 234         defer fs.Destroy()
 235         root, _ := fs.Root()
 236         node, _ := root.(fusefs.NodeStringLookuper).Lookup(netContext.Background(), "greeting")
 237         var attr fuse.Attr
 238         node.Attr(netContext.Background(), &attr)
 239         size := attr.Size
 240         resp := &fuse.ReadResponse{
 241                 Data: make([]byte, size),
 242         }
 243         node.(fusefs.HandleReader).Read(netContext.Background(), &fuse.ReadRequest{
 244                 Size: int(size),
 245         }, resp)
 246         content := resp.Data
 247         if string(content) != testutil.GreetingFileContents {
 248                 t.Fatalf("%q != %q", string(content), testutil.GreetingFileContents)
 249         }
 250 }