func Example() {
// Create file watcher
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatalln(err)
}
defer watcher.Close()
// Watch dir
err = watcher.Watch("/path/to/watched/dir")
if err != nil {
log.Fatalln(err)
}
// Start LiveReload server
lr, err := lrserver.New(lrserver.DefaultName, lrserver.DefaultPort)
if err != nil {
log.Fatalln(err)
}
go lr.ListenAndServe()
// Start goroutine that requests reload upon watcher event
go func() {
for {
event := <-watcher.Event
lr.Reload(event.Name)
}
}()
// Start serving html
http.HandleFunc("/", func(rw http.ResponseWriter, req *http.Request) {
rw.Write([]byte(html))
})
http.ListenAndServe(":3000", nil)
}
func ExampleNewWatcher() {
watcher, err := fsnotify.NewWatcher()
if err != nil {
log.Fatal(err)
}
go func() {
for {
select {
case ev := <-watcher.Event:
log.Println("event:", ev)
case err := <-watcher.Error:
log.Println("error:", err)
}
}
}()
err = watcher.Watch("/tmp/foo")
if err != nil {
log.Fatal(err)
}
}
// run executes the main loop of the chatterbox daemon
func (d *Daemon) run() error {
profile := new(proto.Profile)
if err := persistence.UnmarshalFromFile(d.OurChatterboxProfilePath(), profile); err != nil {
return err
}
ourConn, err := d.cc.DialServer(d.Dename, d.ServerAddressTCP, int(d.ServerPortTCP),
(*[32]byte)(&d.ServerTransportPK), (*[32]byte)(&profile.UserIDAtServer),
(*[32]byte)(&d.TransportSecretKeyForServer))
if err != nil {
return err
}
defer ourConn.Close()
notifies := make(chan *util.EnvelopeWithId)
replies := make(chan *proto.ServerToClient)
connToServer := &util.ConnectionToServer{
InBuf: d.inBuf,
Conn: ourConn,
ReadReply: replies,
ReadEnvelope: notifies,
}
go connToServer.ReceiveMessages()
prekeyPublics, prekeySecrets, err := d.updatePrekeys(connToServer)
if err != nil {
return err
}
watcher, err := fsnotify.NewWatcher()
if err != nil {
return err
}
defer watcher.Close()
initFn := func(path string, f os.FileInfo, err error) error {
if f.IsDir() {
return d.processOutboxDir(path)
}
return d.processOutboxDir(filepath.Dir(path))
}
err = WatchDir(watcher, d.OutboxDir(), initFn)
if err != nil {
return err
}
if err = util.EnablePush(connToServer); err != nil {
return err
}
d.requestAllMessages(connToServer)
for {
select {
case <-d.stop:
return nil
case ev := <-watcher.Event:
// event in the directory structure; watch any new directories
if _, err = os.Stat(ev.Name); err == nil {
err = WatchDir(watcher, ev.Name, initFn)
if err != nil {
log.Printf("watch %s: %s", ev.Name, err) // TODO
}
d.processOutboxDir(ev.Name)
}
case envelopewithid := <-connToServer.ReadEnvelope:
envelope := envelopewithid.Envelope
id := envelopewithid.Id
msgHash := sha256.Sum256(envelope)
// assume it's the first message we're receiving from the person; try to decrypt
message, ratch, index, err := d.decryptFirstMessage(envelope, prekeyPublics, prekeySecrets)
if err == nil {
// assumption was correct, found a prekey that matched
if err := StoreRatchet(d, message.Dename, ratch); err != nil {
return err
}
newPrekeyPublics := append(prekeyPublics[:index], prekeyPublics[index+1:]...)
newPrekeySecrets := append(prekeySecrets[:index], prekeySecrets[index+1:]...)
if err = StorePrekeys(d, newPrekeyPublics, newPrekeySecrets); err != nil {
return err
}
//TODO: Update prekeys by removing index, store // is this done? What does it mean?
if err := d.saveMessage(message); err != nil {
return err
}
if err := util.DeleteMessages(connToServer, []*[32]byte{id}); err != nil {
return err
}
} else { // try decrypting with a ratchet
ratchets, err := AllRatchets(d, d.fillAuth, d.checkAuth)
if err != nil {
return err
}
// TODO: figure out what here should be atomic and comment
if message, ratch, err := decryptMessage(envelope, ratchets); err == nil {
if err := d.saveMessage(message); err != nil {
return err
}
if err := StoreRatchet(d, message.Dename, ratch); err != nil {
return err
}
} else {
log.Printf("failed to decrypt %x: %s", msgHash, err)
}
if err := util.DeleteMessages(connToServer, []*[32]byte{id}); err != nil {
return err
}
}
case err := <-watcher.Error:
if err != nil {
return err
}
}
}
}
