/** @internal Add dialog usage */ nua_dialog_usage_t *nua_dialog_usage_add(nua_owner_t *own, struct nua_dialog_state *ds, nua_usage_class const *uclass, sip_event_t const *event) { if (ds) { sip_event_t *o; nua_dialog_usage_t *du, **prev_du; prev_du = nua_dialog_usage_at(ds, uclass, event); du = *prev_du; if (du) { /* Already exists */ SU_DEBUG_5(("nua(%p): adding already existing %s usage%s%s\n", (void *)own, nua_dialog_usage_name(du), event ? " with event " : "", event ? event->o_type : "")); if (prev_du != &ds->ds_usage) { /* Move as a first usage in the list */ *prev_du = du->du_next; du->du_next = ds->ds_usage; ds->ds_usage = du; } return du; } o = event ? sip_event_dup(own, event) : NULL; if (o != NULL || event == NULL) du = su_zalloc(own, sizeof *du + uclass->usage_size); if (du) { su_home_ref(own); du->du_dialog = ds; du->du_class = uclass; du->du_event = o; if (uclass->usage_add(own, ds, du) < 0) { su_home_unref(own); su_free(own, o); su_free(own, du); return NULL; } SU_DEBUG_5(("nua(%p): adding %s usage%s%s\n", (void *)own, nua_dialog_usage_name(du), o ? " with event " : "", o ? o->o_type :"")); du->du_next = ds->ds_usage, ds->ds_usage = du; return du; } su_free(own, o); } return NULL; }
/** @internal Get a dialog usage */ nua_dialog_usage_t *nua_dialog_usage_get(nua_dialog_state_t const *ds, nua_usage_class const *kind, sip_event_t const *event) { return *nua_dialog_usage_at(ds, kind, event); }