func writeEncoded(c appengine.Context, w http.ResponseWriter, data interface{}) {
newEncoder := bencode.NewEncoder(w)
if err := newEncoder.Encode(data); err != nil {
c.Errorf("Failed to encode data: %s", err)
writeInternalError(w)
}
}
// Bencodes an arbitrary dictionary as a tracker response.
func encodeResponseMap(responseMap map[string]interface{}) io.Reader {
responseBuf := bytes.NewBuffer(make([]byte, 0))
encoder := bencode.NewEncoder(responseBuf)
_ = encoder.Encode(responseMap)
return responseBuf
}
func (p *peerState) SendExtensions(supportedExtensions map[int]string,
metadataSize int64) {
handshake := ExtensionHandshake{
M: make(map[string]int, len(supportedExtensions)),
V: "Taipei-Torrent dev",
MetadataSize: metadataSize,
}
for i, ext := range supportedExtensions {
handshake.M[ext] = i
}
var buf bytes.Buffer
err := bencode.NewEncoder(&buf).Encode(handshake)
if err != nil {
log.Println("Error when marshalling extension message")
return
}
msg := make([]byte, 2+buf.Len())
msg[0] = EXTENSION
msg[1] = EXTENSION_HANDSHAKE
copy(msg[2:], buf.Bytes())
p.sendMessage(msg)
}
// 读取种子信息
func ReadTorrent(r io.Reader) (meta MetaInfo, err error) {
// 读取文件信息
s, err := ioutil.ReadAll(r)
if err != nil {
return
}
err = bencode.DecodeBytes(s, &meta)
if err != nil {
return
}
hash := sha1.New()
err = bencode.NewEncoder(hash).Encode(meta.Info)
if err != nil {
return
}
meta.InfoHash = fmt.Sprintf("%02X", string(hash.Sum(nil)))
return
/*var m interface{}
m, err = bencode.Decode(r)
if err != nil {
return
}
topMap, ok := m.(map[string]interface{})
if !ok {
return
}
infoMap, ok := topMap["info"]
if !ok {
return
}
var b bytes.Buffer
if err = bencode.Marshal(&b, infoMap); err != nil {
return
}
hash := sha1.New()
hash.Write(b.Bytes())
err = bencode.Unmarshal(&b, &meta.Info)
if err != nil {
return
}
meta.InfoHash = fmt.Sprintf("%X", string(hash.Sum(nil)))
meta.Announce = getString(topMap, "announce")
meta.Comment = getString(topMap, "comment")
meta.CreatedBy = getString(topMap, "created by")
meta.CreationDate = getInt64(topMap, "creation date")
meta.Encoding = getString(topMap, "encoding")
return*/
}
// MD5Params returns the MD5 hash of the provided map[string]string.
// This could easily be extended to support hashing any datatype supported
// by bencode.
func MD5Params(val map[string]string) (string, error) {
md5Writer := md5.New()
enc := bencode.NewEncoder(md5Writer)
if err := enc.Encode(val); err != nil {
return "", err
}
return fmt.Sprintf("%x", md5Writer.Sum(nil)), nil
}
// Returns the size of the representation of this metainfo as a bencoded
// dictionary
func (m *MetaInfo) Size() (sz int) {
var buf bytes.Buffer
err := bencode.NewEncoder(&buf).Encode(m)
if err != nil {
log.Fatal("Couldn't bencode this metainfo: ", err)
}
return buf.Len()
}
func (m *MetaInfo) saveToDisk(dir string) (err error) {
ihhex := fmt.Sprintf("%x", m.InfoHash)
f, err := os.Create(filepath.Join(dir, ihhex))
if err != nil {
log.Println("Error when opening file for creation: ", err)
return
}
defer f.Close()
return bencode.NewEncoder(f).Encode(m)
}
// Returns a bencoded version of the torrent's info dict.
func (t *TorrentFile) BencodeInfoDict() ([]byte, error) {
infoBuffer := bytes.NewBuffer(make([]byte, 0))
encoder := bencode.NewEncoder(infoBuffer)
err := encoder.Encode(t.Info)
if err != nil {
fmt.Printf("error encoding torrent file: %s", err.Error())
}
return infoBuffer.Bytes(), err
}
func benc(w http.ResponseWriter, req *http.Request) {
enc := bencode.NewEncoder(w)
if err := enc.Encode(map[string]interface{}{
"foo": "bar",
"baz": 2,
"buf": []string{"baz", "bloof"},
}); err != nil {
log.Println(err)
}
log.Printf("Handled request from %s :)", req.RemoteAddr)
}
func (query *Query) constructArgs(args interface{}) error {
buf := new(bytes.Buffer)
bencodeE := bencode.NewEncoder(buf)
if err := bencodeE.Encode(args); err != nil {
return err
}
data, err := encodeIntoBigEndian(buf)
query.ProcedureData = data
return err
}
func announceRecover(w http.ResponseWriter) {
err := recover()
if err == nil {
return
}
w.WriteHeader(http.StatusInternalServerError)
enc := bencode.NewEncoder(w)
enc.Encode(M{"failure reason": err})
//DEBUG: newline for debugging
fmt.Fprintln(w, "")
}
// Converts torrent to SUPRA-PRIVATE torrent
//
// Sets the private flag to 1 and embeds the supplied secret and hash
// for authentication purposes.
//
// This torrent file SHOULD NOT be shared between users or statistics collection
// and anti-abuse mechanisms will be skewed for that user.
func (t *TorrentFile) WriteFile(secret, hash []byte) ([]byte, error) {
fmt.Printf("writing file...")
t.Announce = fmt.Sprintf("http://tracker.fatalsyntax.com:4200/%s/%s/announce", hex.EncodeToString(secret), hex.EncodeToString(hash))
t.Encoding = "UTF-8"
infoBuffer := bytes.NewBuffer(make([]byte, 0))
encoder := bencode.NewEncoder(infoBuffer)
err := encoder.Encode(t)
if err != nil {
return nil, err
}
return infoBuffer.Bytes(), nil
}
func (cs *ControlSession) DoMetadata(msg []byte, p *peerState) (err error) {
var message IHMessage
err = bencode.NewDecoder(bytes.NewReader(msg)).Decode(&message)
if err != nil {
cs.log("Couldn't decode metadata message: ", err)
return
}
if message.Port == 0 {
return
}
// take his IP addr, use the advertised port
ip := p.conn.RemoteAddr().(*net.TCPAddr).IP.String()
port := strconv.Itoa(int(message.Port))
peer := ip + ":" + port
if cs.isNewerThan(message.Info.Rev) {
return
}
var tmpInfoBuf bytes.Buffer
err = bencode.NewEncoder(&tmpInfoBuf).Encode(message.Info)
if err != nil {
cs.log("Couldn't encode ih message, returning now")
return err
}
rawInfo := tmpInfoBuf.Bytes()
pub := [ed.PublicKeySize]byte(cs.ID.Pub)
var sig [ed.SignatureSize]byte
copy(sig[0:ed.SignatureSize], message.Sig)
ok := ed.Verify(&pub, rawInfo, &sig)
if !ok {
return errors.New("Bad Signature")
}
var test IHMessage
err = bencode.NewDecoder(bytes.NewReader(msg)).Decode(&test)
cs.session.SaveIHMessage(msg)
cs.Torrents <- Announce{
infohash: message.Info.InfoHash,
peer: peer,
}
return
}
// Encode's the `info` dictionary into a SHA1 hash; used to uniquely identify a torrent.
func (t *TorrentFile) EncodeInfo() []byte {
//torrentDict := torrentMetainfo.(map[string]interface{})
infoBytes := make([]byte, 0) //TODO: intelligenty size buffer based on info
infoBuffer := bytes.NewBuffer(infoBytes)
encoder := bencode.NewEncoder(infoBuffer)
err := encoder.Encode(t.Info)
if err != nil {
fmt.Printf("error encoding torrent file: %s", err.Error())
}
hash := sha1.New()
io.Copy(hash, infoBuffer)
return hash.Sum(nil)
}
// Returns the representation of this metainfo's info dict as a
// bencoded dictionary
func (m *MetaInfo) RawInfo() (b []byte) {
if m.rawInfo != nil {
return m.rawInfo
}
if m.Info == nil {
return []byte{}
}
var buf bytes.Buffer
err := bencode.NewEncoder(&buf).Encode(m.Info)
if err != nil {
log.Fatal("Couldn't bencode this metainfo's dict: ", err)
}
m.rawInfo = buf.Bytes()
return m.rawInfo
}
func (p *peerState) sendExtensionMessage(typ string, data interface{}) {
if _, ok := p.theirExtensions[typ]; !ok {
// They don't understand this extension
return
}
var payload bytes.Buffer
err := bencode.NewEncoder(&payload).Encode(data)
if err != nil {
log.Printf("Couldn't marshal extension message: ", err)
}
msg := make([]byte, 2+payload.Len())
msg[0] = EXTENSION
msg[1] = byte(p.theirExtensions[typ])
copy(msg[2:], payload.Bytes())
p.sendMessage(msg)
}
func (w *Watcher) torrentify() (ih string, err error) {
w.lock.Lock()
defer w.lock.Unlock()
meta, err := createMeta(w.watchedDir)
if err != nil {
log.Println(err)
return
}
var buf bytes.Buffer
err = bencode.NewEncoder(&buf).Encode(meta)
if err != nil {
return
}
w.session.SaveTorrent(buf.Bytes(), meta.InfoHash, time.Now().Format(time.RFC3339))
return meta.InfoHash, err
}
func NewMetaInfoFromContent(content []byte) (m *MetaInfo, err error) {
var m1 MetaInfo
err1 := bencode.DecodeString(string(content), &m1)
if err1 != nil {
err = errors.New("Couldn't parse torrent file: " + err1.Error())
return
}
hash := sha1.New()
err1 = bencode.NewEncoder(hash).Encode(m1.Info)
if err1 != nil {
return
}
m1.InfoHash = string(hash.Sum(nil))
return &m1, nil
}
func (cs *ControlSession) SetCurrent(ih string) error {
if cs.currentIH == ih {
return nil
}
parts := strings.Split(cs.rev, "-")
if len(parts) != 2 {
cs.logf("Invalid rev: %s\n", cs.rev)
parts = []string{"0", ""}
}
counter, err := strconv.Atoi(parts[0])
if err != nil {
counter = 0
}
newCounter := strconv.Itoa(counter + 1)
cs.logf("Updating rev with ih %x", ih)
newRev := newCounter + "-" + fmt.Sprintf("%x", sha1.Sum([]byte(ih+parts[1])))
mess, err := NewIHMessage(int64(cs.Port), ih, newRev, cs.ID.Priv)
if err != nil {
return err
}
var buf bytes.Buffer
err = bencode.NewEncoder(&buf).Encode(mess)
if err != nil {
return err
}
err = cs.session.SaveIHMessage(buf.Bytes())
if err != nil {
return err
}
cs.currentIH = ih
cs.rev = newRev
cs.broadcast(mess)
return nil
}
func NewIHMessage(port int64, ih, rev string, priv id.PrivKey) (mm IHMessage, err error) {
info := NewInfo{
InfoHash: ih,
Rev: rev,
}
var buf bytes.Buffer
err = bencode.NewEncoder(&buf).Encode(info)
if err != nil {
log.Println("[CONTROL] Couldn't encode ih message, returning now")
return mm, err
}
var privarg [ed.PrivateKeySize]byte
copy(privarg[:], priv[:])
sig := ed.Sign(&privarg, buf.Bytes())
return IHMessage{
Info: info,
Port: port,
Sig: string(sig[:]),
}, nil
}
func announce(c *Context) {
defer announceRecover(c.w)
log.Print(c.r.RawURL)
a, err := ParseAnnounce(c.r)
if err != nil {
log.Panic("ERROR: ", err)
}
//grab the user by ip
co := c.DB.C("users")
var user *User
co.Find(M{"ips": a.IP.String()}).One(&user)
if user == nil {
log.Panic("Unauthorized IP: ", a.IP)
}
//update the user in the database
user.LastIP = a.IP.String()
user.LastSeen = bson.Now()
user.Update(a.InfoHash, a.Event, a.Left)
co.Update(M{"_id": user.ID}, user)
var peers []StructPeer
query := co.Find(M{"info.infohash": a.InfoHash, "_id": M{"$ne": user.ID}})
query.Limit(min(50, max(0, a.Numwant))) //bound between 0 <= n <= 50
selector := M{"lastip": 1, "port": 1}
if !a.NoPeerId {
selector["peerid"] = 1
}
query.Select(selector)
query.All(&peers)
if query.Iter().Err() != nil {
panic(query.Iter().Err())
}
enc := bencode.NewEncoder(c.w)
//build the response
if a.Compact {
response := CompactAnnounceResponse{
Interval: 30,
Complete: 0,
Incomplete: 0,
Peers: make([]string, len(peers)),
}
for i := range peers {
response.Peers[i] = peers[i].Compact()
}
enc.Encode(response)
} else {
response := AnnounceResponse{
Interval: 30,
Complete: 0,
Incomplete: 0,
Peers: peers,
}
enc.Encode(response)
}
fmt.Fprintln(c.w, "")
}
func (t *Torrent) Resolve() error {
if t.IsMagnet() {
t.hasResolved = true
return nil
}
var torrentFile struct {
Announce string `bencode:"announce"`
AnnounceList [][]string `bencode:"announce-list"`
Info map[string]interface{} `bencode:"info"`
}
// We don't need trackers for public torrents since we'll find them on the
// DHT or public trackers
if (t.InfoHash != "" && t.Name != "" && t.Peers > 0 && t.Seeds > 0) && (t.IsPrivate == false || len(t.Trackers) > 0) {
return nil
}
parts := strings.Split(t.URI, "|")
uri := parts[0]
req, err := http.NewRequest("GET", uri, nil)
if err != nil {
return err
}
if len(parts) > 1 {
for _, part := range parts[1:] {
keyVal := strings.SplitN(part, "=", 2)
req.Header.Add(keyVal[0], keyVal[1])
}
}
resp, err := httpClient.Do(req)
if err != nil {
return err
}
dec := bencode.NewDecoder(resp.Body)
// FIXME!!!!
if err := dec.Decode(&torrentFile); err != nil {
return err
}
if t.InfoHash == "" {
hasher := sha1.New()
bencode.NewEncoder(hasher).Encode(torrentFile.Info)
t.InfoHash = hex.EncodeToString(hasher.Sum(nil))
}
if t.Name == "" {
t.Name = torrentFile.Info["name"].(string)
}
if len(t.Trackers) == 0 {
t.Trackers = append(t.Trackers, torrentFile.Announce)
for _, trackers := range torrentFile.AnnounceList {
t.Trackers = append(t.Trackers, trackers...)
}
}
t.hasResolved = true
t.initialize()
return nil
}
// Processes received queries
func (node *Node) processQuery(query *Query, addr net.Addr) error {
procedureName := query.ProcedureName
if procedure := node.procedures[procedureName]; procedure != nil {
// Procedure exists (it's being served)
method := procedure.Method
function := method.Func
// Initialize value
argValue, replyValue := reflect.New(procedure.ArgType.Elem()), reflect.New(procedure.ReplyType.Elem())
// Set value of arg
argsReader := bytes.NewReader(query.ProcedureData)
argsDecoder := bencode.NewDecoder(argsReader)
err := argsDecoder.Decode(argValue.Interface())
if err != nil {
fmt.Errorf("qrp:", "Error decoding procedure data into value: %s\n", err.Error())
return err
}
// Invoke the function
function.Call([]reflect.Value{procedure.Receiver, argValue, replyValue})
// Create reply
reply := Reply{MessageID: query.MessageID}
argsBuf := new(bytes.Buffer)
argsEncoder := bencode.NewEncoder(argsBuf)
argsEncoder.Encode(replyValue.Interface())
reply.ReturnData, err = encodeIntoBigEndian(argsBuf)
if err != nil {
fmt.Errorf("qrp:", "Error encoding reply return data: %s\n", err.Error())
return err
}
// Create message
message := Message{Reply: &reply}
// Encode message
messageBuf := new(bytes.Buffer)
messageEncoder := bencode.NewEncoder(messageBuf)
err = messageEncoder.Encode(message)
if err != nil {
fmt.Errorf("qrp:", "Error encoding reply message into BEncode: %s\n", err.Error())
return err
}
message_bigEndian, err := encodeIntoBigEndian(messageBuf)
if err != nil {
fmt.Errorf("qrp:", "Error encoding reply message into BigEndian: %s\n", err.Error())
return err
}
// Send to host
node.sendingMutex.Lock()
node.connection.WriteTo(message_bigEndian, addr)
node.sendingMutex.Unlock()
return nil
} else {
return &BadProcedureError{procedureName}
}
return nil
}
func Share(cliId string, workDir string, cliTarget string, trackers []string, useLPD bool, manualPeers []string) {
shareID, err := id.NewFromString(cliId)
if err != nil {
fmt.Printf("Couldn't generate shareId: %s\n", err)
return
}
sessionName := hex.EncodeToString(shareID.Infohash) + ".sql"
session, err := sharesession.New(filepath.Join(workDir, sessionName))
if err != nil {
log.Fatal("Couldn't open session file: ", err)
}
fmt.Printf("WriteReadStore:\t%s\n ReadStore:\t%s\n Store:\t%s\n",
shareID.WRS(), shareID.RS(), shareID.S())
target := session.GetTarget()
if target == "" {
if cliTarget == "" {
fmt.Println("Need a folder to share!")
return
}
target = cliTarget
session.SaveSession(target, shareID)
} else if cliTarget != "" {
fmt.Printf("Can't override folder already set to %s\n", target)
}
_, err = os.Stat(target)
if err != nil {
if os.IsNotExist(err) {
os.MkdirAll(target, 0744)
} else {
fmt.Printf("%s is an invalid dir: %s\n", target, err)
os.Exit(1)
}
}
// Watcher
watcher := &Watcher{
PingNewTorrent: make(chan string),
}
if shareID.CanWrite() {
watcher, err = NewWatcher(session, filepath.Clean(target))
if err != nil {
log.Fatal("Couldn't start watcher: ", err)
}
} else {
watcher.PingNewTorrent = make(chan string, 1)
watcher.PingNewTorrent <- session.GetCurrentInfohash()
}
// External listener
conChan, listenPort, err := listenForPeerConnections([]byte(shareID.Psk[:]))
if err != nil {
log.Fatal("Couldn't listen for peers connection: ", err)
}
var currentSession TorrentSessionI = EmptyTorrent{}
// quitChan
quitChan := listenSigInt()
// LPD
lpd := &Announcer{announces: make(chan *Announce)}
if useLPD {
lpd, err = NewAnnouncer(listenPort)
if err != nil {
log.Fatal("Couldn't listen for Local Peer Discoveries: ", err)
}
}
// Control session
controlSession, err := NewControlSession(shareID, listenPort, session, trackers)
if err != nil {
log.Fatal(err)
}
if useLPD {
lpd.Announce(string(shareID.Infohash))
}
for _, peer := range manualPeers {
controlSession.backoffHintNewPeer(peer)
}
peers := session.GetPeers()
for _, p := range peers {
log.Printf("Feeding with known peer: %s\n", p)
controlSession.backoffHintNewPeer(p)
}
log.Println("Starting.")
mainLoop:
for {
select {
case <-quitChan:
err := currentSession.Quit()
if err != nil {
log.Println("Failed: ", err)
} else {
log.Println("Done")
}
break mainLoop
case c := <-conChan:
if currentSession.Matches(c.infohash) {
currentSession.AcceptNewPeer(c)
} else if controlSession.Matches(c.infohash) {
controlSession.AcceptNewPeer(c)
}
case announce := <-lpd.announces:
hexhash, err := hex.DecodeString(announce.infohash)
if err != nil {
log.Println("Err with hex-decoding:", err)
break
}
if controlSession.Matches(string(hexhash)) {
controlSession.backoffHintNewPeer(announce.peer)
}
case ih := <-watcher.PingNewTorrent:
if ih == controlSession.currentIH && !currentSession.IsEmpty() {
break
}
err := controlSession.SetCurrent(ih)
if err != nil {
log.Fatal("Error setting new current infohash:", err)
}
currentSession.Quit()
torrentFile := session.GetCurrentTorrent()
tentativeSession, err := NewTorrentSession(shareID, target, torrentFile, listenPort)
if err != nil {
if !os.IsNotExist(err) {
log.Println("Couldn't start new session from watched dir: ", err)
}
// Fallback to an emptytorrent, because the previous one is
// invalid; hope it will be ok next time !
currentSession = EmptyTorrent{}
break
}
currentSession = tentativeSession
go currentSession.DoTorrent()
for _, peer := range controlSession.peers.All() {
currentSession.hintNewPeer(peer.address)
}
case announce := <-controlSession.Torrents:
if controlSession.currentIH == announce.infohash && !currentSession.IsEmpty() {
break
}
err := controlSession.SetCurrent(announce.infohash)
if err != nil {
log.Fatal("Error setting new current infohash:", err)
}
currentSession.Quit()
log.Println("Opening new torrent session")
magnet := fmt.Sprintf("magnet:?xt=urn:btih:%x", announce.infohash)
tentativeSession, err := NewTorrentSession(shareID, target, magnet, listenPort)
if err != nil {
log.Println("Couldn't start new session from announce: ", err)
currentSession = EmptyTorrent{}
break
}
currentSession = tentativeSession
go currentSession.DoTorrent()
currentSession.hintNewPeer(announce.peer)
case peer := <-controlSession.NewPeers:
if currentSession.IsEmpty() {
magnet := fmt.Sprintf("magnet:?xt=urn:btih:%x", controlSession.currentIH)
tentativeSession, err := NewTorrentSession(shareID, target, magnet, listenPort)
if err != nil {
log.Printf("Couldn't start new session with new peer: %s\n", err)
break
}
currentSession = tentativeSession
go currentSession.DoTorrent()
}
currentSession.hintNewPeer(peer)
case meta := <-currentSession.NewMetaInfo():
var buf bytes.Buffer
err := bencode.NewEncoder(&buf).Encode(meta)
if err != nil {
log.Println(err)
break
}
session.SaveTorrent(buf.Bytes(), meta.InfoHash, time.Now().Format(time.RFC3339))
}
}
}
// Tries to call 'procedure' on remote node, with supplied 'args' and allocated return values 'reply'.
// 'timeout' can be used to specify a maximum time to wait for a reply (in seconds). If timeout is 0, we wait forever.
// The reliability of this completing successfully is dependent on the network protocol (UDP is unreliable)
// Returns an error if there is a timeout
func (node *Node) Call(procedure string, addr net.Addr, args interface{}, reply interface{}, timeout int) (err error) {
// Get our call, which contains the message ID
call := node.nextCall(addr)
// Create Query
query := Query{ProcedureName: procedure, MessageID: call.MessageID}
query.constructArgs(args)
// Create Message
message := Message{Query: &query}
// Encode it into BEncode
buf := new(bytes.Buffer)
bencodeE := bencode.NewEncoder(buf)
if err := bencodeE.Encode(message); err != nil {
fmt.Errorf("qrp:", "Error encoding query message into BEncode: %s\n", err.Error())
return err
}
buf_bigEndian, err := encodeIntoBigEndian(buf)
if err != nil {
fmt.Errorf("qrp:", "Error encoding query message into BigEndian: %s\n", err.Error())
return err
}
// Create channel for receiving response
responseChan := make(responseChannel)
// Allocate channel
node.pendingMutex.Lock()
node.pending[call] = &responseChan
node.pendingMutex.Unlock()
// Delete channel after exit
defer func() {
node.pendingMutex.Lock()
delete(node.pending, call)
node.pendingMutex.Unlock()
}()
// Send to host
node.sendingMutex.Lock()
node.connection.WriteTo(buf_bigEndian, addr)
node.sendingMutex.Unlock()
// If timeout isn't 0, initate the timeout function concurrently
timeoutChan := make(chan bool, 1)
if timeout > 0 {
go func() {
// Timeout function
time.Sleep(time.Duration(timeout) * time.Second)
timeoutChan <- true
}()
}
// Wait for response on channel
select {
case replydata := <-responseChan:
// We received a reply
// Decode args
argsReader := bytes.NewReader(replydata)
argsDecoder := bencode.NewDecoder(argsReader)
err := argsDecoder.Decode(reply)
if err != nil {
fmt.Errorf("qrp:", "Error decoding reply return data into value: %s\n", err.Error())
return err
}
case <-timeoutChan:
// We timed out
return new(TimeoutError)
}
return nil
}
func createMeta(dir string) (meta *MetaInfo, err error) {
blockSize := int64(1 << 20) // 1MiB
fileDicts := make([]*FileDict, 0)
hasher := NewBlockHasher(blockSize)
err = torrentWalk(dir, func(path string, info os.FileInfo, perr error) (err error) {
if perr != nil {
return perr
}
f, err := os.Open(path)
if err != nil {
return errors.New(fmt.Sprintf("Couldn't open %s for hashing: %s\n", path, err))
}
defer f.Close()
_, err = io.Copy(hasher, f)
if err != nil {
log.Printf("Couldn't hash %s: %s\n", path, err)
return err
}
relPath, err := filepath.Rel(dir, path)
if err != nil {
return
}
fileDict := &FileDict{
Length: info.Size(),
Path: strings.Split(relPath, string(os.PathSeparator)),
}
fileDicts = append(fileDicts, fileDict)
return
})
if err != nil {
return
}
end := hasher.Close()
if end != nil {
return
}
meta = &MetaInfo{
Info: &InfoDict{
Pieces: string(hasher.Pieces),
PieceLength: blockSize,
Private: 0,
Name: "rakoshare",
Files: fileDicts,
},
}
hash := sha1.New()
err = bencode.NewEncoder(hash).Encode(meta.Info)
if err != nil {
return
}
meta.InfoHash = string(hash.Sum(nil))
return
}