Help with creating a plugin (my master thesis)

Quentin Glidic sardemff7+pidgin at
Mon Mar 3 03:55:01 EST 2014

(This message was lost somewhere, I am resending it. Sorry for the delay.)

On 21/02/2014 00:46, Agnieszka Pachuta wrote:
 > Hi,


 > Your previous tips helped me a lot, but now I have some other
 > problems with my plugin.
 > 1. I use receiving_im_msg_cb callback:
 > receiving_im_msg_cb(PurpleAccount *account, char **sender, char
 > **buffer, PurpleConversation *conv, PurpleMessageFlags *flags, void
 > *data)
 > My idea is to check the type of message and send a proper message in
 > this function to execute the whole cryptographic protocol. However,
 > when I send the first initial message, the receiving_im_msg_cb is
 > called, but the PurpleConversation has not been created yet. (I can
 > see in a debug window that conversation_created_cb is called after
 > receiving_im_msg_cb) When I try to print conv->name or conv->type, I
 > get an error and Pidgin stops working. So I can't use this object
 > and, in particular, I can't respond to a message because
 > purple_conv_im_send function takes a PurpleConversation as an
 > argument. How to deal with that?
 > Is it a good idea to create a PurpleConversation object on one's
 > own? If so, how to do that?

Right after the code sending the received-im-msg event, you can see this
/* search for conversation again in case it was created by
received-im-msg handler */

So I guess it is fine to create one yourself. You should however check
if another handler did already. Here is the code (stolen from 

conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, name, 

if (conv == NULL)
         conv = purple_conversation_new(PURPLE_CONV_TYPE_IM, account, name);

Then just use conv normally!

 > 2. I use purple_conversation_set_data function to keep some
 > additional data connected to conversation (like a current state of
 > the protocol). I would also need to keep some data connected to
 > people on a Buddy List (I mean I need one additional variable for
 > each buddy) Is it possible to do that?

There is an API exactly for that:

Just peek the one you need. :-)



Quentin “Sardem FF7” Glidic

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