Some comments about implementing a virtual users component

Pedro Melo melo at
Mon Feb 5 15:57:44 UTC 2007


after a couple more hours with this, re-using all the presence  
subscribe/unsubscribed stuff inside on a component is not  
that easy, because all that stuff is tied to a Connection.

I think that a User <=> Connection is limiting what we can do. If we  
could split Connection and User (a User might have a Connection, and  
a Client Connection belongs to a User for sure), we could manage  
virtual Users (like bots) much easier. For example, who manages Bot  
subscribes and unsubscribes? I didn't see any code to do that in the class.

Anyway, what this means right now, is that using DJabberd::Presence  
as the class to handle <presence> stanzas in Connection::ComponentOut  
is possible, but AFAIK using virtual users is not possible because  
current Presence takes over all that.

So I've written a simpler Presence, a Presence::Simple, just to be  
used with ComponentOut. Still testing it but right now it seems the  
only way I'll be able to manage my own subscription process.

Best regards,

Em Feb 5, 2007, às 1:27 PM, Pedro Melo escreveu:

> Please ignore this.... :)
> My modifications to the RosterStorage where preventing the  
> subscribe presence stanza to reach my component.
> Thanks,
> Em Feb 5, 2007, às 12:11 PM, Pedro Melo escreveu:
>> Hi,
>> At work I needed to implement a component for a subdomin in which  
>> all their users have the following behavior. It will be used to  
>> add phone numbers as JIDs to your roster, acting as a helper for  
>> SIP and to send and receive SMSs.
>>  * They are always online;
>>  * They always accept subscription requests and try to subscribe  
>> the JID that asks.
>> As a base for this I wrote a subclass of Component and  
>> Component::Node. This deals with all the IQ disco, and VCard stuff  
>> simply and effectively.
>> I started with the InMemory RosterStorage to deal with the roster,  
>> subclass it to override load_roster, so that when asked to be  
>> subscribed I could reply with a subscription of 'from'. This deals  
>> with the "always accept subscription requests" part.
>> I've also hooked the  PresenceChecker phase to give back a valid  
>> presence every time. Now they are always online.
>> The only thing that I wasn't able to see a way to do with current  
>> hooks is sending back a subscription request for each  
>> subscription. I've added a new phase,  
>> PresenceSubscriptionRequested but I think we could add hooks on  
>> all roster-change related presences....
>> Opinions?
>> --
>> Pedro Melo
>> Blog:
>> Jabber ID: melo at
>> Use Jabber!
> --
> Pedro Melo
> Blog:
> Jabber ID: melo at
> Use Jabber!

Pedro Melo
Jabber ID: melo at
Use Jabber!

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