func (sess *Session) GetShareId() id.Id {
var wrs, rs, s string
err := sess.db.QueryRow(`SELECT wrs, rs, s FROM meta`).Scan(&wrs, &rs, &s)
if err != nil {
return id.Id{}
}
var ret id.Id
switch {
case wrs != "":
ret, _ = id.NewFromString(wrs)
case rs != "":
ret, _ = id.NewFromString(rs)
case s != "":
ret, _ = id.NewFromString(s)
}
return ret
}
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))
}
}
}