/**@ingroup sip_route
*
* Get first route header and rewrite the RequestURI.
*/
sip_route_t *sip_route_follow(msg_t *msg, sip_t *sip)
{
if (sip->sip_route) {
/* XXX - in case of outbound proxy, route may contain our address */
sip_route_t *r = sip_route_remove(msg, sip);
sip_request_t *rq = sip->sip_request;
rq = sip_request_create(msg_home(msg), rq->rq_method, rq->rq_method_name,
(url_string_t const *)r->r_url, rq->rq_version);
url_strip_transport(rq->rq_url);
msg_header_insert(msg, (msg_pub_t *)sip, (msg_header_t *)rq);
return r;
}
return NULL;
}
/**Forward a request belonging to the leg
* (stdarg version of nta_outgoing_forward()).
*
* @deprecated
* Use nta_outgoing_mcreate() instead.
*/
nta_outgoing_t *nta_outgoing_vforward(nta_leg_t *leg,
nta_response_f *callback,
nta_outgoing_magic_t *magic,
url_string_t const *route_url,
url_string_t const *request_uri,
nta_incoming_t const *ireq,
sip_t const *isip,
void const *extra,
va_list headers)
{
nta_agent_t *agent = leg->leg_agent;
nta_outgoing_t *orq = NULL;
msg_t *msg, *imsg;
sip_t *sip;
su_home_t *home;
assert(leg); assert(ireq);
if (isip == NULL)
imsg = ireq->irq_request, isip = sip_object(ireq->irq_request);
else if (isip == sip_object(ireq->irq_request))
imsg = ireq->irq_request;
else if (isip == sip_object(ireq->irq_request2))
imsg = ireq->irq_request2;
else {
SU_DEBUG_3(("nta_outgoing_forward: invalid arguments\n"));
return NULL;
}
assert(isip); assert(isip->sip_request);
if (!route_url)
route_url = (url_string_t *)agent->sa_default_proxy;
if (!(msg = nta_msg_create(agent, 0)))
return NULL;
msg_clone(msg, imsg);
sip = sip_object(msg);
home = msg_home(msg);
/* Copy the SIP headers from the @c imsg message */
do {
if (sip_copy_all(msg, sip, isip) < 0)
break;
if (sip_add_headers(msg, sip, extra, headers) < 0)
break;
if (!route_url && sip->sip_route) {
request_uri = (url_string_t *)sip->sip_route->r_url;
if (!sip_route_remove(msg, sip))
break;
}
if (request_uri) {
sip_request_t *rq;
rq = sip_request_create(home,
sip->sip_request->rq_method,
sip->sip_request->rq_method_name,
request_uri,
NULL);
if (!rq || sip_header_insert(msg, sip, (sip_header_t *)rq) < 0)
break;
}
if ((orq = nta_outgoing_mcreate(agent, callback, magic, route_url, msg)))
return orq;
} while (0);
msg_destroy(msg);
return NULL;
}
/**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;
}
