func main() {
flag.Parse()
oldState, err := terminal.MakeRaw(0)
if err != nil {
panic(err.Error())
}
defer terminal.Restore(0, oldState)
term := terminal.NewTerminal(os.Stdin, "> ")
if width, height, err := terminal.GetSize(0); err == nil {
term.SetSize(width, height)
}
if len(*configFile) == 0 {
homeDir := os.Getenv("HOME")
if len(homeDir) == 0 {
homeDir = "/"
}
*configFile = homeDir + "/.xmpp-client"
}
config, err := ParseConfig(*configFile)
if err != nil {
alert(term, "Failed to parse config file: "+err.Error())
config = new(Config)
if !enroll(config, term) {
return
}
config.filename = *configFile
config.Save()
}
password := config.Password
if len(password) == 0 {
if password, err = term.ReadPassword(fmt.Sprintf("Password for %s (will not be saved to disk): ", config.Account)); err != nil {
alert(term, "Failed to read password: "******"@", 2)
if len(parts) != 2 {
alert(term, "invalid username (want user@domain): "+config.Account)
return
}
user := parts[0]
domain := parts[1]
var addr string
if len(config.Server) > 0 && config.Port > 0 {
addr = fmt.Sprintf("%s:%d", config.Server, config.Port)
} else {
if len(config.Proxies) > 0 {
alert(term, "Cannot connect via a proxy without Server and Port being set in the config file as an SRV lookup would leak information.")
return
}
host, port, err := xmpp.Resolve(domain)
if err != nil {
alert(term, "Failed to resolve XMPP server: "+err.Error())
return
}
addr = fmt.Sprintf("%s:%d", host, port)
}
var dialer proxy.Dialer
for i := len(config.Proxies) - 1; i >= 0; i-- {
u, err := url.Parse(config.Proxies[i])
if err != nil {
alert(term, "Failed to parse "+config.Proxies[i]+" as a URL: "+err.Error())
return
}
if dialer == nil {
dialer = proxy.Direct
}
if dialer, err = proxy.FromURL(u, dialer); err != nil {
alert(term, "Failed to parse "+config.Proxies[i]+" as a proxy: "+err.Error())
return
}
}
xmppConfig := &xmpp.Config{
Log: &lineLogger{term, nil},
Create: *createAccount,
}
if len(config.RawLogFile) > 0 {
rawLog, err := os.OpenFile(config.RawLogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0600)
if err != nil {
alert(term, "Failed to open raw log file: "+err.Error())
return
}
lock := new(sync.Mutex)
in := rawLogger{
out: rawLog,
prefix: []byte("<- "),
lock: lock,
}
out := rawLogger{
out: rawLog,
prefix: []byte("-> "),
lock: lock,
}
in.other, out.other = &out, &in
xmppConfig.InLog = &in
xmppConfig.OutLog = &out
defer in.flush()
defer out.flush()
}
if dialer != nil {
info(term, "Making connection to "+addr+" via proxy")
if xmppConfig.Conn, err = dialer.Dial("tcp", addr); err != nil {
alert(term, "Failed to connect via proxy: "+err.Error())
return
}
}
conn, err := xmpp.Dial(addr, user, domain, password, xmppConfig)
if err != nil {
alert(term, "Failed to connect to XMPP server: "+err.Error())
return
}
s := Session{
account: config.Account,
conn: conn,
term: term,
conversations: make(map[string]*otr.Conversation),
knownStates: make(map[string]string),
privateKey: new(otr.PrivateKey),
config: config,
pendingRosterChan: make(chan *rosterEdit),
pendingSubscribes: make(map[string]string),
lastActionTime: time.Now(),
}
info(term, "Fetching roster")
//var rosterReply chan xmpp.Stanza
rosterReply, _, err := s.conn.RequestRoster()
if err != nil {
alert(term, "Failed to request roster: "+err.Error())
return
}
conn.SignalPresence("")
s.input = Input{
term: term,
uidComplete: new(priorityList),
}
commandChan := make(chan interface{})
go s.input.ProcessCommands(commandChan)
stanzaChan := make(chan xmpp.Stanza)
go s.readMessages(stanzaChan)
s.privateKey.Parse(config.PrivateKey)
s.timeouts = make(map[xmpp.Cookie]time.Time)
ticker := time.NewTicker(1 * time.Second)
MainLoop:
for {
select {
case now := <-ticker.C:
haveExpired := false
for _, expiry := range s.timeouts {
if now.After(expiry) {
haveExpired = true
break
}
}
if !haveExpired {
continue
}
newTimeouts := make(map[xmpp.Cookie]time.Time)
for cookie, expiry := range s.timeouts {
if now.After(expiry) {
s.conn.Cancel(cookie)
} else {
newTimeouts[cookie] = expiry
}
}
s.timeouts = newTimeouts
case edit := <-s.pendingRosterChan:
if !edit.isComplete {
info(s.term, "Please edit "+edit.fileName+" and run /rostereditdone when complete")
s.pendingRosterEdit = edit
continue
}
if s.processEditedRoster(edit) {
s.pendingRosterEdit = nil
} else {
alert(s.term, "Please reedit file and run /rostereditdone again")
}
case rosterStanza, ok := <-rosterReply:
if !ok {
alert(s.term, "Failed to read roster: "+err.Error())
return
}
if s.roster, err = xmpp.ParseRoster(rosterStanza); err != nil {
alert(s.term, "Failed to parse roster: "+err.Error())
return
}
for _, entry := range s.roster {
s.input.AddUser(entry.Jid)
}
info(s.term, "Roster received")
case cmd, ok := <-commandChan:
if !ok {
warn(term, "Exiting because command channel closed")
break MainLoop
}
s.lastActionTime = time.Now()
switch cmd := cmd.(type) {
case quitCommand:
break MainLoop
case versionCommand:
replyChan, cookie, err := s.conn.SendIQ(cmd.User, "get", xmpp.VersionQuery{})
if err != nil {
alert(s.term, "Error sending version request: "+err.Error())
continue
}
s.timeouts[cookie] = time.Now().Add(5 * time.Second)
go s.awaitVersionReply(replyChan, cmd.User)
case rosterCommand:
info(s.term, "Current roster:")
maxLen := 0
for _, item := range s.roster {
if maxLen < len(item.Jid) {
maxLen = len(item.Jid)
}
}
for _, item := range s.roster {
line := " "
line += item.Jid
numSpaces := 1 + (maxLen - len(item.Jid))
for i := 0; i < numSpaces; i++ {
line += " "
}
line += item.Subscription + "\t" + item.Name
if state, ok := s.knownStates[item.Jid]; ok {
line += "\t" + state
}
info(s.term, line)
}
case rosterEditCommand:
if s.pendingRosterEdit != nil {
warn(s.term, "Aborting previous roster edit")
s.pendingRosterEdit = nil
}
rosterCopy := make([]xmpp.RosterEntry, len(s.roster))
copy(rosterCopy, s.roster)
go s.editRoster(rosterCopy)
case rosterEditDoneCommand:
if s.pendingRosterEdit == nil {
warn(s.term, "No roster edit in progress. Use /rosteredit to start one")
continue
}
go s.loadEditedRoster(*s.pendingRosterEdit)
case confirmCommand:
s.handleConfirmOrDeny(cmd.User, true /* confirm */)
case denyCommand:
s.handleConfirmOrDeny(cmd.User, false /* deny */)
case addCommand:
s.conn.SendPresence(cmd.User, "subscribe", "" /* generate id */)
case msgCommand:
conversation, ok := s.conversations[cmd.to]
var msgs [][]byte
if ok {
var err error
msgs, err = conversation.Send([]byte(cmd.msg))
if err != nil {
alert(s.term, err.Error())
break
}
} else {
msgs = [][]byte{[]byte(cmd.msg)}
}
for _, msg := range msgs {
s.conn.Send(cmd.to, string(msg))
}
case otrCommand:
s.conn.Send(string(cmd.User), string(otr.QueryMessage))
case authQACommand:
to := string(cmd.User)
conversation, ok := s.conversations[to]
if !ok {
alert(s.term, "Can't authenticate without a secure conversation established")
break
}
msgs, err := conversation.Authenticate(cmd.Question, []byte(cmd.Secret))
if err != nil {
alert(s.term, "Error while starting authentication with "+to+": "+err.Error())
}
for _, msg := range msgs {
s.conn.Send(to, string(msg))
}
}
case rawStanza, ok := <-stanzaChan:
if !ok {
warn(term, "Exiting because channel to server closed")
break MainLoop
}
switch stanza := rawStanza.Value.(type) {
case *xmpp.ClientMessage:
s.processClientMessage(stanza)
case *xmpp.ClientPresence:
s.processPresence(stanza)
case *xmpp.ClientIQ:
if stanza.Type != "get" && stanza.Type != "set" {
continue
}
reply := s.processIQ(stanza)
if reply == nil {
reply = xmpp.ErrorReply{
Type: "cancel",
Error: xmpp.ErrorBadRequest{},
}
}
if err := s.conn.SendIQReply(stanza.From, "result", stanza.Id, reply); err != nil {
alert(term, "Failed to send IQ message: "+err.Error())
}
default:
info(term, fmt.Sprintf("%s %s", rawStanza.Name, rawStanza.Value))
}
}
}
os.Stdout.Write([]byte("\n"))
}
func enroll(config *Config, term *terminal.Terminal) bool {
var err error
warn(term, "Enrolling new config file")
var domain string
for {
term.SetPrompt("Account (i.e. [email protected], enter to quit): ")
if config.Account, err = term.ReadLine(); err != nil || len(config.Account) == 0 {
return false
}
parts := strings.SplitN(config.Account, "@", 2)
if len(parts) != 2 {
alert(term, "invalid username (want user@domain): "+config.Account)
continue
}
domain = parts[1]
break
}
var proxyStr string
term.SetPrompt("Proxy (i.e socks5://127.0.0.1:9050, enter for none): ")
for {
if proxyStr, err = term.ReadLine(); err != nil {
return false
}
if len(proxyStr) == 0 {
break
}
u, err := url.Parse(proxyStr)
if err != nil {
alert(term, "Failed to parse "+proxyStr+" as a URL: "+err.Error())
continue
}
if _, err = proxy.FromURL(u, proxy.Direct); err != nil {
alert(term, "Failed to parse "+proxyStr+" as a proxy: "+err.Error())
continue
}
break
}
if len(proxyStr) > 0 {
config.Proxies = []string{proxyStr}
info(term, "Since you selected a proxy, we need to know the server and port to connect to as a SRV lookup would leak information every time.")
term.SetPrompt("Server (i.e. xmpp.example.com, enter to lookup using unproxied DNS): ")
if config.Server, err = term.ReadLine(); err != nil {
return false
}
if len(config.Server) == 0 {
var port uint16
info(term, "Performing SRV lookup")
if config.Server, port, err = xmpp.Resolve(domain); err != nil {
alert(term, "SRV lookup failed: "+err.Error())
return false
}
config.Port = int(port)
info(term, "Resolved "+config.Server+":"+strconv.Itoa(config.Port))
} else {
for {
term.SetPrompt("Port (enter for 5222): ")
portStr, err := term.ReadLine()
if err != nil {
return false
}
if len(portStr) == 0 {
portStr = "5222"
}
if config.Port, err = strconv.Atoi(portStr); err != nil || config.Port <= 0 || config.Port > 65535 {
info(term, "Port numbers must be 0 < port <= 65535")
continue
}
break
}
}
}
term.SetPrompt("File to import libotr private key from (enter to generate): ")
var priv otr.PrivateKey
for {
importFile, err := term.ReadLine()
if err != nil {
return false
}
if len(importFile) > 0 {
privKeyBytes, err := ioutil.ReadFile(importFile)
if err != nil {
alert(term, "Failed to open private key file: "+err.Error())
continue
}
if !priv.Import(privKeyBytes) {
alert(term, "Failed to parse libotr private key file (the parser is pretty simple I'm afraid)")
continue
}
break
} else {
info(term, "Generating private key...")
priv.Generate(rand.Reader)
break
}
}
config.PrivateKey = priv.Serialize(nil)
term.SetPrompt("> ")
return true
}