// evictUser evicts given user's sessions from the topic and clears user's cached data, if requested
func (t *Topic) evictUser(uid types.Uid, clear bool, ignore *Session) {
now := time.Now().UTC().Round(time.Millisecond)
note := NoErrEvicted("", t.original, now)
if clear {
// Delete per-user data
delete(t.perUser, uid)
} else {
// Clear online status
pud := t.perUser[uid]
pud.online = 0
t.perUser[uid] = pud
}
// Notify topic subscribers that the user has left the topic
if t.cat == TopicCat_Grp {
t.presPubChange(uid.UserId(), "off")
}
// Detach all user's sessions
for sess, _ := range t.sessions {
if sess.uid == uid {
delete(t.sessions, sess)
sess.detach <- t.name
if sess != ignore {
sess.QueueOut(note)
}
}
}
}
// Announce to a single user on 'me' topic
func (t *Topic) presAnnounceToUser(uid types.Uid, what string, seq int, skip *Session) {
if pud, ok := t.perUser[uid]; ok {
update := &MsgServerPres{Topic: "me", What: what, Src: t.original, SeqId: seq}
if pud.modeGiven&pud.modeWant&types.ModePres != 0 {
globals.hub.route <- &ServerComMessage{Pres: update, rcptto: uid.UserId(), sessSkip: skip}
}
}
}
func (t *Topic) makeInvite(notify, target, from types.Uid, act types.InviteAction, modeWant,
modeGiven types.AccessMode, info interface{}) *ServerComMessage {
// FIXME(gene): this is a workaround for gorethink's broken way of marshalling json
inv, err := json.Marshal(MsgInvitation{
Topic: t.name,
User: target.UserId(),
Action: act.String(),
Acs: MsgAccessMode{modeWant.String(), modeGiven.String()},
Info: info})
if err != nil {
log.Println(err)
}
converted := map[string]interface{}{}
err = json.Unmarshal(inv, &converted)
if err != nil {
log.Println(err)
}
// endof workaround
msg := &ServerComMessage{Data: &MsgServerData{
Topic: "me",
From: from.UserId(),
Timestamp: time.Now().UTC().Round(time.Millisecond),
Content: converted}, rcptto: notify.UserId()}
log.Printf("Invite generated: %#+v", msg.Data)
return msg
}
// Authenticate
func (s *Session) login(msg *ClientComMessage) {
var uid types.Uid
var err error
if !s.uid.IsZero() {
s.QueueOut(ErrAlreadyAuthenticated(msg.Login.Id, "", msg.timestamp))
return
} else if msg.Login.Scheme == "" || msg.Login.Scheme == "basic" {
uid, err = store.Users.Login(msg.Login.Scheme, msg.Login.Secret)
if err != nil {
// DB error
log.Println(err)
s.QueueOut(ErrUnknown(msg.Login.Id, "", msg.timestamp))
return
} else if uid.IsZero() {
// Invalid login or password
s.QueueOut(ErrAuthFailed(msg.Login.Id, "", msg.timestamp))
return
}
} else {
s.QueueOut(ErrAuthUnknownScheme(msg.Login.Id, "", msg.timestamp))
return
}
s.uid = uid
s.userAgent = msg.Login.UserAgent
s.QueueOut(&ServerComMessage{Ctrl: &MsgServerCtrl{
Id: msg.Login.Id,
Code: http.StatusOK,
Text: http.StatusText(http.StatusOK),
Timestamp: msg.timestamp,
Params: map[string]interface{}{"uid": uid.UserId()}}})
}
// User subscribed to a new topic. Let all user's other sessions know.
// Case 11
func (t *Topic) presTopicSubscribed(user types.Uid, skip *Session) {
t.presAnnounceToUser(user, "on", 0, skip)
log.Printf("Pres 11: from '%s' (src: %s) [subbed/on]", t.name, user.UserId())
}
// Announce topic disappearance just to the affected user
// Case 4.b
func (t *Topic) presTopicGone(user types.Uid) {
t.presAnnounceToUser(user, "gone", 0, nil)
log.Printf("Pres 4.b: from '%s' (src: %s) [gone]", t.name, user.UserId())
}
// Publish announcement to topic
// Cases 4.a, 7
func (t *Topic) presPubChange(src types.Uid, what string) {
// Announce to topic subscribers. 4.a, 7
t.presAnnounceToTopic(src.UserId(), what, 0, nil)
//log.Printf("Pres 4.a,7: from '%s' (src: %s) [%s]", t.name, src, what)
}
