/**
* @brief Starts the KP, initializes state and cals all necessary functions.
*
* @return 0.
*/
int main()
{
// Sets handler for CTR+C
signal(SIGINT, &signal_callback_handler);
// Initialize smart space information and data about subscription.
ss_info_t info;
subs_t subs;
ss_init_space_info(&info, KP_SS_NAME, KP_SS_ADDRESS, KP_SS_PORT);
subs.is_subscribed = false;
subs.new_triples = NULL;
subs.old_triples = NULL;
// In the smart space the name of the KP must be unique, if you try to
// join without leave, then you received an error.
if (ss_join(&info, KP_NAME) == -1) {
printf("Can't join to SS.\n");
return 0;
}
printf("KP join to SS.\n");
// Create a subscription to <KP-says-*> triples.
if (make_subscription(&info, &subs) != 0) {
printf("Can't subscribe.\n");
ss_leave(&info);
return 0;
}
printf("\nWaiting new data.\n");
// Start subscription processing, it is ends:
// - when yo press CTRL+C;
// - when unsubscription indication will be received from the SS;
// - on error.
handle_subscription(&info, &subs);
// Before leave we need to unsubscribe our subscription.
handle_unsubscription(&info, &subs);
// Delete triples list.
update_subscription_triples(&subs, NULL, NULL);
ss_leave(&info);
printf("\nKP leave SS...\n");
return 0;
}
static int
_subscribed_handler(xmpp_conn_t * const conn,
xmpp_stanza_t * const stanza, void * const userdata)
{
char *from = xmpp_stanza_get_attribute(stanza, STANZA_ATTR_FROM);
Jid *from_jid = jid_create(from);
log_debug("Subscribed presence handler fired for %s", from);
handle_subscription(from_jid->barejid, PRESENCE_SUBSCRIBED);
autocomplete_remove(sub_requests_ac, from_jid->barejid);
jid_destroy(from_jid);
return 1;
}
