Exemplo n.º 1
0
int
s2_save_register(struct message *rm)
{
  sip_contact_t *contact, *m, **m_prev;
  sip_expires_t const *ex;
  sip_date_t const *date;
  sip_time_t now = rm->when.tv_sec, expires;

  msg_header_free_all(s2->home, (msg_header_t *)s2->registration->aor);
  msg_header_free_all(s2->home, (msg_header_t *)s2->registration->contact);
  tport_unref(s2->registration->tport);

  s2->registration->aor = NULL;
  s2->registration->contact = NULL;
  s2->registration->tport = NULL;

  if (rm == NULL)
    return 0;

  assert(rm && rm->sip && rm->sip->sip_request);
  assert(rm->sip->sip_request->rq_method == sip_method_register);

  ex = rm->sip->sip_expires;
  date = rm->sip->sip_date;

  contact = sip_contact_dup(s2->home, rm->sip->sip_contact);

  for (m_prev = &contact; *m_prev;) {
    m = *m_prev;

    expires = sip_contact_expires(m, ex, date,
				  s2_default_registration_duration,
				  now);
    if (expires) {
      char *p = su_sprintf(s2->home, "expires=%lu", (unsigned long)expires);
      msg_header_add_param(s2->home, m->m_common, p);
      m_prev = &m->m_next;
    }
    else {
      *m_prev = m->m_next;
      m->m_next = NULL;
      msg_header_free(s2->home, (msg_header_t *)m);
    }
  }

  if (contact == NULL)
    return 0;

  s2->registration->aor = sip_to_dup(s2->home, rm->sip->sip_to);
  s2->registration->contact = contact;
  s2->registration->tport = tport_ref(rm->tport);

  s2sip->sut.aor = s2->registration->aor;
  s2sip->sut.contact = s2->registration->contact;
  s2sip->sut.tport = s2->registration->tport;

  return 0;
}
Exemplo n.º 2
0
/**Set new contact.
 *
 * @retval 0 when successful
 * @retval -1 error setting contact
 */
int outbound_set_contact(outbound_t *ob,
			 sip_contact_t const *application_contact,
			 sip_via_t const *v,
			 int terminating)
{
  su_home_t *home = ob->ob_home;
  sip_contact_t *rcontact = NULL, *dcontact = NULL, *previous = NULL;
  sip_contact_t *m1, *m2, *m3;
  int contact_uri_changed = 0;

  m1 = ob->ob_rcontact;
  m2 = ob->ob_dcontact;
  m3 = ob->ob_previous;

  if (terminating) {
    if (ob->ob_by_stack && application_contact == NULL)
      return 0;

    if (ob->ob_contacts)
      previous = ob->ob_rcontact;
  }
  else if (application_contact) {
    rcontact = sip_contact_dup(home, application_contact);

    if (!ob->ob_rcontact ||
	url_cmp_all(ob->ob_rcontact->m_url, application_contact->m_url)) {
      contact_uri_changed = 1;
      previous = ob->ob_contacts ? ob->ob_rcontact : NULL;
    }
  }
  else if (ob->ob_by_stack) {
    return 0;    /* Xyzzy - nothing happens */
  }
  else if (v) {
    char const *tport = !v->v_next ? v->v_protocol : NULL;
    char reg_id_param[20];

    dcontact = ob->ob_oo->oo_contact(ob->ob_owner, home, 1,
				     v, tport, NULL);
    if (!dcontact)
      return -1;

    if (ob->ob_instance && ob->ob_reg_id != 0)
      snprintf(reg_id_param, sizeof reg_id_param, ";reg-id=%u", ob->ob_reg_id);

    rcontact = ob->ob_oo->oo_contact(ob->ob_owner, home, 0,
				     v, v->v_protocol,
				     ob->ob_instance, reg_id_param, NULL);
    if (!rcontact)
      return -1;

    if (!ob->ob_rcontact ||
	url_cmp_all(ob->ob_rcontact->m_url, rcontact->m_url)) {
      contact_uri_changed = 1;
      previous = ob->ob_contacts ? ob->ob_rcontact : NULL;
    }
  }

  if (previous)
    msg_header_replace_param(home, (msg_common_t *)previous, "expires=0");

  ob->ob_by_stack = application_contact == NULL;

  ob->ob_contacts = rcontact != NULL;

  ob->ob_rcontact = rcontact;
  ob->ob_dcontact = dcontact;
  ob->ob_previous = previous;

  if (contact_uri_changed) {
    ob->ob_registering = 0;
    ob->ob_registered = 0;
    ob->ob_validated = 0;
    ob->ob_once_validated = 0;
  }

  if (m1 != previous)
    msg_header_free(home, (void *)m1);
  if (m2 != m1 && m2 != m3)
    msg_header_free(home, (void *)m2);
  msg_header_free(home, (void *)m3);

  return 0;
}
Exemplo n.º 3
0
/**Send a request message.
 *
 * @retval 0 if request is pending
 * @retval >=1 if error event has been sent
 * @retval < 0 if no error event has been sent
 */
static
int nua_client_request_sendmsg(nua_client_request_t *cr)
{
  nua_handle_t *nh = cr->cr_owner;
  nua_dialog_state_t *ds = nh->nh_ds;
  sip_method_t method = cr->cr_method;
  char const *name = cr->cr_method_name;
  url_string_t const *url = (url_string_t *)cr->cr_target;
  nta_leg_t *leg;
  msg_t *msg;
  sip_t *sip;
  int error;

  assert(cr->cr_orq == NULL);

  cr->cr_offer_sent = cr->cr_answer_recv = 0;
  cr->cr_offer_recv = cr->cr_answer_sent = 0;

  if (!ds->ds_leg && cr->cr_dialog) {
    ds->ds_leg = nta_leg_tcreate(nh->nh_nua->nua_nta,
				 nua_stack_process_request, nh,
				 SIPTAG_CALL_ID(cr->cr_sip->sip_call_id),
				 SIPTAG_FROM(cr->cr_sip->sip_from),
				 SIPTAG_TO(cr->cr_sip->sip_to),
				 SIPTAG_CSEQ(cr->cr_sip->sip_cseq),
				 TAG_END());
    if (!ds->ds_leg)
      return -1;
  }

  if (cr->cr_sip->sip_from && ds->ds_leg) {
    if (cr->cr_sip->sip_from->a_tag == NULL) {
      if (sip_from_tag(msg_home(cr->cr_msg), cr->cr_sip->sip_from,
		       nta_leg_tag(ds->ds_leg, NULL)) < 0) {
	return -1;
      }
    }
  }

  cr->cr_retry_count++;

  if (ds->ds_leg)
    leg = ds->ds_leg;
  else
    leg = nh->nh_nua->nua_dhandle->nh_ds->ds_leg; /* Default leg */

  msg = msg_copy(cr->cr_msg), sip = sip_object(msg);

  if (msg == NULL)
    return -1;

  if (nua_dialog_is_established(ds)) {
    while (sip->sip_route)
      sip_route_remove(msg, sip);
  }
  else if (!ds->ds_route) {
    sip_route_t *initial_route = NH_PGET(nh, initial_route);

    if (initial_route) {
      initial_route = sip_route_dup(msg_home(msg), initial_route);
      if (!initial_route) return -1;
      msg_header_prepend(msg, (msg_pub_t*)sip,
			 /* This should be
			    (msg_header_t **)&sip->sip_route
			  * but directly casting pointer &sip->sip_route gives
			  * spurious type-punning warning */
			 (msg_header_t **)((char *)sip + offsetof(sip_t, sip_route)),
			 (msg_header_t *)initial_route);
    }
  }


  /**
   * For in-dialog requests, the request URI is taken from the @Contact
   * header received from the remote party during dialog establishment,
   * and the NUTAG_URL() is ignored.
   *
   * Also, the @CallID and @CSeq headers and @From and @To tags are
   * generated based on the dialog information and added to the request.
   * If the dialog has a route, it is added to the request, too.
   */
  if (nta_msg_request_complete(msg, leg, method, name, url) < 0) {
    msg_destroy(msg);
    return -1;
  }

  /**@MaxForwards header (with default value set by NTATAG_MAX_FORWARDS()) is
   * also added now, if it does not exist.
   */

  if (!ds->ds_remote)
    ds->ds_remote = sip_to_dup(nh->nh_home, sip->sip_to);
  if (!ds->ds_local)
    ds->ds_local = sip_from_dup(nh->nh_home, sip->sip_from);

  /**
   * Next, values previously set with nua_set_params() or nua_set_hparams()
   * are used: @Allow, @Supported, @Organization, @UserAgent and
   * @AllowEvents headers are added to the request if they are not already
   * set.
   */
  if (!sip->sip_allow)
    sip_add_dup(msg, sip, (sip_header_t*)NH_PGET(nh, allow));

  if (!sip->sip_supported && NH_PGET(nh, supported))
    sip_add_dup(msg, sip, (sip_header_t *)NH_PGET(nh, supported));

  if (method == sip_method_register && NH_PGET(nh, path_enable) &&
      !sip_has_feature(sip->sip_supported, "path") &&
      !sip_has_feature(sip->sip_require, "path"))
    sip_add_make(msg, sip, sip_supported_class, "path");

  if (!sip->sip_organization && NH_PGET(nh, organization))
    sip_add_make(msg, sip, sip_organization_class, NH_PGET(nh, organization));

  if (!sip->sip_user_agent && NH_PGET(nh, user_agent))
    sip_add_make(msg, sip, sip_user_agent_class, NH_PGET(nh, user_agent));

  /** Any node implementing one or more event packages SHOULD include an
   * appropriate @AllowEvents header indicating all supported events in
   * all methods which initiate dialogs and their responses (such as
   * INVITE) and OPTIONS responses.
   */
  if (!sip->sip_allow_events &&
      NH_PGET(nh, allow_events) &&
      (method == sip_method_notify || /* Always in NOTIFY */
       (!ds->ds_remote_tag &&	      /* And in initial requests */
	(method == sip_method_subscribe || method == sip_method_refer ||
	 method == sip_method_options ||
	 method == sip_method_invite))))
    sip_add_dup(msg, sip, (void *)NH_PGET(nh, allow_events));

  /**
   * Next, the stack generates a @Contact header for the request (unless
   * the application already gave a @Contact header or it does not want to
   * use @Contact and indicates that by including SIPTAG_CONTACT(NULL) or
   * SIPTAG_CONTACT(SIP_NONE) in the tagged parameters.) If the
   * application has registered the URI in @From header, the @Contact
   * header used with registration is used. Otherwise, the @Contact header
   * is generated from the local IP address and port number.
   */

  /**For the initial requests, @ServiceRoute set that was received from the
   * registrar is also added to the request message.
   */
  if (cr->cr_method != sip_method_register) {
    if (cr->cr_contactize && cr->cr_has_contact) {
      sip_contact_t *ltarget = sip_contact_dup(nh->nh_home, sip->sip_contact);
      if (ds->ds_ltarget)
	msg_header_free(nh->nh_home, (msg_header_t *)ds->ds_ltarget);
      ds->ds_ltarget = ltarget;
    }

    if (ds->ds_ltarget && !cr->cr_has_contact)
      sip_add_dup(msg, sip, (sip_header_t *)ds->ds_ltarget);

    if (nua_registration_add_contact_to_request(nh, msg, sip,
						cr->cr_contactize &&
						!cr->cr_has_contact &&
						!ds->ds_ltarget,
						!ds->ds_route) < 0) {
      msg_destroy(msg);
      return -1;
    }
  }

  cr->cr_wait_for_cred = 0;

  if (cr->cr_methods->crm_send)
    error = cr->cr_methods->crm_send(cr, msg, sip, NULL);
  else
    error = nua_base_client_request(cr, msg, sip, NULL);

  if (error == -1)
    msg_destroy(msg);

  return error;
}