osip_dialog.c

嵌入式产品中的osip的源代码.

    (*dialog)->state = DIALOG_EARLY;

  i = osip_call_id_to_str (response->call_id, &((*dialog)->call_id));
  if (i != 0)
    goto diau_error_0;

  i = osip_from_get_tag (response->from, &tag);
  if (i != 0)
    goto diau_error_1;
  (*dialog)->local_tag = osip_strdup (tag->gvalue);

  i = osip_to_get_tag (response->to, &tag);
  if (i != 0)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_WARNING, NULL,
		   "Remote UA is not compliant: missing a tag in response!\n"));
      (*dialog)->remote_tag = NULL;
    }
  else
    (*dialog)->remote_tag = osip_strdup (tag->gvalue);

  (*dialog)->route_set = (osip_list_t *) osip_malloc (sizeof (osip_list_t));
  osip_list_init ((*dialog)->route_set);

  pos = 0;
  while (!osip_list_eol (response->record_routes, pos))
    {
      osip_record_route_t *rr;
      osip_record_route_t *rr2;

      rr =
	(osip_record_route_t *) osip_list_get (response->record_routes, pos);
      i = osip_record_route_clone (rr, &rr2);
      if (i != 0)
	goto diau_error_2;
      osip_list_add ((*dialog)->route_set, rr2, -1);
      pos++;
    }

  (*dialog)->local_cseq = osip_atoi (response->cseq->number);
  (*dialog)->remote_cseq = -1;

  i = osip_to_clone (response->to, &((*dialog)->remote_uri));
  if (i != 0)
    goto diau_error_3;

  i = osip_from_clone (response->from, &((*dialog)->local_uri));
  if (i != 0)
    goto diau_error_4;

  {
    osip_contact_t *contact;

    if (!osip_list_eol (response->contacts, 0))
      {
	contact = osip_list_get (response->contacts, 0);
	i = osip_contact_clone (contact, &((*dialog)->remote_contact_uri));
	if (i != 0)
	  goto diau_error_5;
      }
    else
      {
	(*dialog)->remote_contact_uri = NULL;
	OSIP_TRACE (osip_trace
		    (__FILE__, __LINE__, OSIP_WARNING, NULL,
		     "Remote UA is not compliant: missing a contact in response!\n"));
      }
  }
  (*dialog)->secure = -1;	/* non secure */

  return 0;

diau_error_5:
  osip_from_free ((*dialog)->local_uri);
diau_error_4:
  osip_from_free ((*dialog)->remote_uri);
diau_error_3:
diau_error_2:
  osip_list_special_free ((*dialog)->route_set,
			  (void *(*)(void *)) &osip_record_route_free);
  osip_free ((*dialog)->remote_tag);
  osip_free ((*dialog)->local_tag);
diau_error_1:
  osip_free ((*dialog)->call_id);
diau_error_0:
  OSIP_TRACE (osip_trace
	      (__FILE__, __LINE__, OSIP_ERROR, NULL,
	       "Could not establish dialog!\n"));
  osip_free (*dialog);
  *dialog = NULL;
  return -1;
}

#if 1				/* SIPIT13 */
int
osip_dialog_init_as_uac_with_remote_request (osip_dialog_t ** dialog,
					     osip_message_t * next_request,
					     int local_cseq)
{
  int i;
  osip_generic_param_t *tag;

  *dialog = NULL;

  (*dialog) = (osip_dialog_t *) osip_malloc (sizeof (osip_dialog_t));
  if (*dialog == NULL)
    return -1;

  (*dialog)->type = CALLER;
#if 0
  (*dialog)->state = DIALOG_CONFIRMED;
#endif
  (*dialog)->state = DIALOG_EARLY;

  i = osip_call_id_to_str (next_request->call_id, &((*dialog)->call_id));
  if (i != 0)
    goto diau_error_0;

  i = osip_from_get_tag (next_request->to, &tag);
  if (i != 0)
    goto diau_error_1;
  (*dialog)->local_tag = osip_strdup (tag->gvalue);

  i = osip_to_get_tag (next_request->from, &tag);
  if (i != 0)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_WARNING, NULL,
		   "Remote UA is not compliant: missing a tag in next request!\n"));
      (*dialog)->remote_tag = NULL;
    }
  else
    (*dialog)->remote_tag = osip_strdup (tag->gvalue);

  (*dialog)->route_set = (osip_list_t *) osip_malloc (sizeof (osip_list_t));
  osip_list_init ((*dialog)->route_set);

  (*dialog)->local_cseq = local_cseq;	/* -1 osip_atoi (xxx->cseq->number); */
  (*dialog)->remote_cseq = osip_atoi (next_request->cseq->number);

  i = osip_to_clone (next_request->from, &((*dialog)->remote_uri));
  if (i != 0)
    goto diau_error_3;

  i = osip_from_clone (next_request->to, &((*dialog)->local_uri));
  if (i != 0)
    goto diau_error_4;

  (*dialog)->secure = -1;	/* non secure */

  return 0;

diau_error_4:
  osip_from_free ((*dialog)->remote_uri);
diau_error_3:
  osip_free ((*dialog)->remote_tag);
  osip_free ((*dialog)->local_tag);
diau_error_1:
  osip_free ((*dialog)->call_id);
diau_error_0:
  OSIP_TRACE (osip_trace
	      (__FILE__, __LINE__, OSIP_ERROR, NULL,
	       "Could not establish dialog!\n"));
  osip_free (*dialog);
  *dialog = NULL;
  return -1;
}
#endif

int
osip_dialog_init_as_uas (osip_dialog_t ** dialog, osip_message_t * invite,
			 osip_message_t * response)
{
  int i;
  int pos;
  osip_generic_param_t *tag;

  (*dialog) = (osip_dialog_t *) osip_malloc (sizeof (osip_dialog_t));
  if (*dialog == NULL)
    return -1;

  (*dialog)->type = CALLEE;
  if (MSG_IS_STATUS_2XX (response))
    (*dialog)->state = DIALOG_CONFIRMED;
  else				/* 1XX */
    (*dialog)->state = DIALOG_EARLY;

  i = osip_call_id_to_str (response->call_id, &((*dialog)->call_id));
  if (i != 0)
    goto diau_error_0;

  i = osip_to_get_tag (response->to, &tag);
  if (i != 0)
    goto diau_error_1;
  (*dialog)->local_tag = osip_strdup (tag->gvalue);

  i = osip_from_get_tag (response->from, &tag);
  if (i != 0)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_WARNING, NULL,
		   "Remote UA is not compliant: missing a tag in response!\n"));
      (*dialog)->remote_tag = NULL;
    }
  else
    (*dialog)->remote_tag = osip_strdup (tag->gvalue);

  (*dialog)->route_set = (osip_list_t *) osip_malloc (sizeof (osip_list_t));
  osip_list_init ((*dialog)->route_set);

  pos = 0;
  while (!osip_list_eol (response->record_routes, pos))
    {
      osip_record_route_t *rr;
      osip_record_route_t *rr2;

      rr =
	(osip_record_route_t *) osip_list_get (response->record_routes, pos);
      i = osip_record_route_clone (rr, &rr2);
      if (i != 0)
	goto diau_error_2;
      osip_list_add ((*dialog)->route_set, rr2, -1);
      pos++;
    }

  /* local_cseq is set to response->cseq->number for better
     handling of bad UA */
  (*dialog)->local_cseq = osip_atoi (response->cseq->number);
  (*dialog)->remote_cseq = osip_atoi (response->cseq->number);


  i = osip_from_clone (response->from, &((*dialog)->remote_uri));
  if (i != 0)
    goto diau_error_3;

  i = osip_to_clone (response->to, &((*dialog)->local_uri));
  if (i != 0)
    goto diau_error_4;

  {
    osip_contact_t *contact;

    if (!osip_list_eol (invite->contacts, 0))
      {
	contact = osip_list_get (invite->contacts, 0);
	i = osip_contact_clone (contact, &((*dialog)->remote_contact_uri));
	if (i != 0)
	  goto diau_error_5;
      }
    else
      {
	(*dialog)->remote_contact_uri = NULL;
	OSIP_TRACE (osip_trace
		    (__FILE__, __LINE__, OSIP_WARNING, NULL,
		     "Remote UA is not compliant: missing a contact in response!\n"));
      }
  }
  (*dialog)->secure = -1;	/* non secure */

  return 0;

diau_error_5:
  osip_from_free ((*dialog)->local_uri);
diau_error_4:
  osip_from_free ((*dialog)->remote_uri);
diau_error_3:
diau_error_2:
  osip_list_special_free ((*dialog)->route_set,
			  (void *(*)(void *)) &osip_record_route_free);
  osip_free ((*dialog)->remote_tag);
  osip_free ((*dialog)->local_tag);
diau_error_1:
  osip_free ((*dialog)->call_id);
diau_error_0:
  OSIP_TRACE (osip_trace
	      (__FILE__, __LINE__, OSIP_ERROR, NULL,
	       "Could not establish dialog!\n"));
  osip_free (*dialog);
  *dialog = NULL;
  return -1;
}

void
osip_dialog_free (osip_dialog_t * dialog)
{
  if (dialog == NULL)
    return;
  osip_contact_free (dialog->remote_contact_uri);
  osip_from_free (dialog->local_uri);
  osip_to_free (dialog->remote_uri);
  osip_list_special_free (dialog->route_set,
			  (void *(*)(void *)) &osip_record_route_free);
  osip_free (dialog->remote_tag);
  osip_free (dialog->local_tag);
  osip_free (dialog->call_id);
  osip_free (dialog);
}