void process_register_request(pjsip_rx_data* rdata)
{
pj_status_t status;
int st_code = PJSIP_SC_OK;
// Get the URI from the To header and check it is a SIP or SIPS URI.
pjsip_uri* uri = (pjsip_uri*)pjsip_uri_get_uri(rdata->msg_info.to->uri);
if (!PJSIP_URI_SCHEME_IS_SIP(uri))
{
// Reject a non-SIP/SIPS URI with 404 Not Found (RFC3261 isn't clear
// whether 404 is the right status code - it says 404 should be used if
// the AoR isn't valid for the domain in the RequestURI).
// LCOV_EXCL_START
LOG_ERROR("Rejecting register request using non SIP URI");
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_NOT_FOUND,
NULL,
NULL,
NULL);
return;
// LCOV_EXCL_STOP
}
// Canonicalize the public ID from the URI in the To header.
std::string public_id = PJUtils::aor_from_uri((pjsip_sip_uri*)uri);
LOG_DEBUG("Process REGISTER for public ID %s", public_id.c_str());
// Get the call identifier and the cseq number from the respective headers.
std::string cid = PJUtils::pj_str_to_string((const pj_str_t*)&rdata->msg_info.cid->id);;
int cseq = rdata->msg_info.cseq->cseq;
pjsip_msg *msg = rdata->msg_info.msg;
// Add SAS markers to the trail attached to the message so the trail
// becomes searchable.
SAS::TrailId trail = get_trail(rdata);
LOG_DEBUG("Report SAS start marker - trail (%llx)", trail);
SAS::Marker start_marker(trail, SASMarker::INIT_TIME, 1u);
SAS::report_marker(start_marker);
SAS::Marker calling_dn(trail, SASMarker::CALLING_DN, 1u);
pjsip_sip_uri* calling_uri = (pjsip_sip_uri*)pjsip_uri_get_uri(rdata->msg_info.to->uri);
calling_dn.add_var_param(calling_uri->user.slen, calling_uri->user.ptr);
SAS::report_marker(calling_dn);
SAS::Marker cid_marker(trail, SASMarker::SIP_CALL_ID, 1u);
cid_marker.add_var_param(rdata->msg_info.cid->id.slen, rdata->msg_info.cid->id.ptr);
SAS::report_marker(cid_marker, SAS::Marker::Scope::TrailGroup);
// Query the HSS for the associated URIs.
// This should really include the private ID, but we don't yet have a
// homestead API for it. Homestead won't be able to query a third-party HSS
// without the private ID.
Json::Value* uris = hss->get_associated_uris(public_id, trail);
if ((uris == NULL) ||
(uris->size() == 0))
{
// We failed to get the list of associated URIs. This indicates that the
// HSS is unavailable, the public identity doesn't exist or the public
// identity doesn't belong to the private identity. Reject with 403.
LOG_ERROR("Rejecting register request with invalid public/private identity");
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_FORBIDDEN,
NULL,
NULL,
NULL);
return;
}
// Determine the AOR from the first entry in the uris array.
std::string aor = uris->get((Json::ArrayIndex)0, Json::Value::null).asString();
LOG_DEBUG("REGISTER for public ID %s uses AOR %s", public_id.c_str(), aor.c_str());
// Find the expire headers in the message.
pjsip_expires_hdr* expires = (pjsip_expires_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_EXPIRES, NULL);
// Get the system time in seconds for calculating absolute expiry times.
int now = time(NULL);
int expiry = 0;
// The registration service uses optimistic locking to avoid concurrent
// updates to the same AoR conflicting. This means we have to loop
// reading, updating and writing the AoR until the write is successful.
RegData::AoR* aor_data = NULL;
do
{
if (aor_data != NULL)
{
delete aor_data; // LCOV_EXCL_LINE - Single-threaded tests mean we'll
// always pass CAS.
}
// Find the current bindings for the AoR.
aor_data = store->get_aor_data(aor);
LOG_DEBUG("Retrieved AoR data %p", aor_data);
if (aor_data == NULL)
{
// Failed to get data for the AoR because there is no connection
// to the store. Reject the register with a 500 response.
// LCOV_EXCL_START - local store (used in testing) never fails
LOG_ERROR("Failed to get AoR binding for %s from store", aor.c_str());
st_code = PJSIP_SC_INTERNAL_SERVER_ERROR;
break;
// LCOV_EXCL_STOP
}
// Now loop through all the contacts. If there are multiple contacts in
// the contact header in the SIP message, pjsip parses them to separate
// contact header structures.
pjsip_contact_hdr* contact = (pjsip_contact_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_CONTACT, NULL);
while (contact != NULL)
{
if (contact->star)
{
// Wildcard contact, which can only be used to clear all bindings for
// the AoR.
aor_data->clear();
break;
}
pjsip_uri* uri = (contact->uri != NULL) ?
(pjsip_uri*)pjsip_uri_get_uri(contact->uri) :
NULL;
if ((uri != NULL) &&
(PJSIP_URI_SCHEME_IS_SIP(uri)))
{
// The binding identifier is based on the +sip.instance parameter if
// it is present. If not the contact URI is used instead.
std::string contact_uri = PJUtils::uri_to_string(PJSIP_URI_IN_CONTACT_HDR, uri);
std::string binding_id = get_binding_id(contact);
if (binding_id == "")
{
binding_id = contact_uri;
}
LOG_DEBUG(". Binding identifier for contact = %s", binding_id.c_str());
// Find the appropriate binding in the bindings list for this AoR.
RegData::AoR::Binding* binding = aor_data->get_binding(binding_id);
if ((cid != binding->_cid) ||
(cseq > binding->_cseq))
{
// Either this is a new binding, has come from a restarted device, or
// is an update to an existing binding.
binding->_uri = contact_uri;
// TODO Examine Via header to see if we're the first hop
// TODO Only if we're not the first hop, check that the top path header has "ob" parameter
// Get the Path headers, if present. RFC 3327 allows us the option of
// rejecting a request with a Path header if there is no corresponding
// "path" entry in the Supported header but we don't do so on the assumption
// that the edge proxy knows what it's doing.
binding->_path_headers.clear();
pjsip_generic_string_hdr* path_hdr =
(pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, NULL);
while (path_hdr)
{
std::string path = PJUtils::pj_str_to_string(&path_hdr->hvalue);
LOG_DEBUG("Path header %s", path.c_str());
// Extract all the paths from this header.
Utils::split_string(path, ',', binding->_path_headers, 0, true);
// Look for the next header.
path_hdr = (pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, path_hdr->next);
}
binding->_cid = cid;
binding->_cseq = cseq;
binding->_priority = contact->q1000;
binding->_params.clear();
pjsip_param* p = contact->other_param.next;
while ((p != NULL) && (p != &contact->other_param))
{
std::string pname = PJUtils::pj_str_to_string(&p->name);
std::string pvalue = PJUtils::pj_str_to_string(&p->value);
binding->_params.push_back(std::make_pair(pname, pvalue));
p = p->next;
}
// Calculate the expiry period for the updated binding.
expiry = (contact->expires != -1) ? contact->expires :
(expires != NULL) ? expires->ivalue : 300;
if (expiry > 300)
{
// Expiry is too long, set it to the maximum of 300 seconds (5 minutes).
expiry = 300;
}
binding->_expires = now + expiry;
if (analytics != NULL)
{
// Generate an analytics log for this binding update.
analytics->registration(aor, binding_id, contact_uri, expiry);
}
}
}
contact = (pjsip_contact_hdr*)pjsip_msg_find_hdr(msg, PJSIP_H_CONTACT, contact->next);
}
}
while (!store->set_aor_data(aor, aor_data));
if (aor_data != NULL)
{
// Log the bindings.
log_bindings(aor, aor_data);
}
// Build and send the reply.
pjsip_tx_data* tdata;
status = PJUtils::create_response(stack_data.endpt, rdata, st_code, NULL, &tdata);
if (status != PJ_SUCCESS)
{
// LCOV_EXCL_START - don't know how to get PJSIP to fail to create a response
LOG_ERROR("Error building REGISTER %d response %s", st_code,
PJUtils::pj_status_to_string(status).c_str());
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_INTERNAL_SERVER_ERROR,
NULL,
NULL,
NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
if (st_code != PJSIP_SC_OK)
{
// LCOV_EXCL_START - we only reject REGISTER if something goes wrong, and
// we aren't covering any of those paths so we can't hit this either
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
// Add supported and require headers for RFC5626.
pjsip_generic_string_hdr* gen_hdr;
gen_hdr = pjsip_generic_string_hdr_create(tdata->pool,
&STR_SUPPORTED,
&STR_OUTBOUND);
if (gen_hdr == NULL)
{
// LCOV_EXCL_START - can't see how this could ever happen
LOG_ERROR("Failed to add RFC 5626 headers");
tdata->msg->line.status.code = PJSIP_SC_INTERNAL_SERVER_ERROR;
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
delete aor_data;
return;
// LCOV_EXCL_STOP
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)gen_hdr);
// Add contact headers for all active bindings.
for (RegData::AoR::Bindings::const_iterator i = aor_data->bindings().begin();
i != aor_data->bindings().end();
++i)
{
RegData::AoR::Binding* binding = i->second;
if (binding->_expires > now)
{
// The binding hasn't expired.
pjsip_uri* uri = PJUtils::uri_from_string(binding->_uri, tdata->pool);
if (uri != NULL)
{
// Contact URI is well formed, so include this in the response.
pjsip_contact_hdr* contact = pjsip_contact_hdr_create(tdata->pool);
contact->star = 0;
contact->uri = uri;
contact->q1000 = binding->_priority;
contact->expires = binding->_expires - now;
pj_list_init(&contact->other_param);
for (std::list<std::pair<std::string, std::string> >::iterator j = binding->_params.begin();
j != binding->_params.end();
++j)
{
pjsip_param *new_param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
pj_strdup2(tdata->pool, &new_param->name, j->first.c_str());
pj_strdup2(tdata->pool, &new_param->value, j->second.c_str());
pj_list_insert_before(&contact->other_param, new_param);
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)contact);
}
else
{
// Contact URI is malformed. Log an error, but otherwise don't try and
// fix it.
// LCOV_EXCL_START hard to hit - needs bad data in the store
LOG_WARNING("Badly formed contact URI %s for address of record %s",
binding->_uri.c_str(), aor.c_str());
// LCOV_EXCL_STOP
}
}
}
// Deal with path header related fields in the response.
pjsip_generic_string_hdr* path_hdr =
(pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, NULL);
if ((path_hdr != NULL) &&
(!aor_data->bindings().empty()))
{
// We have bindings with path headers so we must require outbound.
pjsip_require_hdr* require_hdr = pjsip_require_hdr_create(tdata->pool);
require_hdr->count = 1;
require_hdr->values[0] = STR_OUTBOUND;
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)require_hdr);
}
// Echo back any Path headers as per RFC 3327, section 5.3. We take these
// from the request as they may not exist in the bindings any more if the
// bindings have expired.
while (path_hdr)
{
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)pjsip_hdr_clone(tdata->pool, path_hdr));
path_hdr = (pjsip_generic_string_hdr*)pjsip_msg_find_hdr_by_name(msg, &STR_PATH, path_hdr->next);
}
// Construct a Service-Route header pointing at the sprout cluster. We don't
// care which sprout handles the subsequent requests as they all have access
// to all subscriber information.
pjsip_sip_uri* service_route_uri = pjsip_sip_uri_create(tdata->pool, false);
pj_strdup(tdata->pool,
&service_route_uri->host,
&stack_data.sprout_cluster_domain);
service_route_uri->port = stack_data.trusted_port;
service_route_uri->transport_param = pj_str("TCP");
service_route_uri->lr_param = 1;
pjsip_route_hdr* service_route = pjsip_route_hdr_create(tdata->pool);
service_route->name = STR_SERVICE_ROUTE;
service_route->sname = pj_str("");
service_route->name_addr.uri = (pjsip_uri*)service_route_uri;
pjsip_msg_insert_first_hdr(tdata->msg, (pjsip_hdr*)service_route);
// Add P-Associated-URI headers for all of the associated URIs.
static const pj_str_t p_associated_uri_hdr_name = pj_str("P-Associated-URI");
for (Json::ValueIterator it = uris->begin(); it != uris->end(); it++)
{
pj_str_t associated_uri = {(char*)(*it).asCString(), strlen((*it).asCString())};
pjsip_hdr* associated_uri_hdr =
(pjsip_hdr*)pjsip_generic_string_hdr_create(tdata->pool,
&p_associated_uri_hdr_name,
&associated_uri);
pjsip_msg_add_hdr(tdata->msg, associated_uri_hdr);
}
delete uris;
// Send the response, but prevent the transmitted data from being freed, as we may need to inform the
// ASes of the 200 OK response we sent.
pjsip_tx_data_add_ref(tdata);
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
RegistrationUtils::register_with_application_servers(ifchandler, store, rdata, tdata, "");
// Now we can free the tdata.
pjsip_tx_data_dec_ref(tdata);
LOG_DEBUG("Report SAS end marker - trail (%llx)", trail);
SAS::Marker end_marker(trail, SASMarker::END_TIME, 1u);
SAS::report_marker(end_marker);
delete aor_data;
}
void process_register_request(pjsip_rx_data* rdata)
{
pj_status_t status;
int st_code = PJSIP_SC_OK;
SAS::TrailId trail = get_trail(rdata);
// Get the URI from the To header and check it is a SIP or SIPS URI.
pjsip_uri* uri = (pjsip_uri*)pjsip_uri_get_uri(rdata->msg_info.to->uri);
if ((!PJSIP_URI_SCHEME_IS_SIP(uri)) && (!PJSIP_URI_SCHEME_IS_TEL(uri)))
{
// Reject a non-SIP/TEL URI with 404 Not Found (RFC3261 isn't clear
// whether 404 is the right status code - it says 404 should be used if
// the AoR isn't valid for the domain in the RequestURI).
LOG_ERROR("Rejecting register request using invalid URI scheme");
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
// Can't log the public ID as the REGISTER has failed too early
std::string public_id = "UNKNOWN";
std::string error_msg = "Rejecting register request using invalid URI scheme";
event.add_var_param(public_id);
event.add_var_param(error_msg);
SAS::report_event(event);
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_NOT_FOUND,
NULL,
NULL,
NULL);
return;
}
// Allocate an ACR for this transaction and pass the request to it.
ACR* acr = acr_factory->get_acr(get_trail(rdata),
CALLING_PARTY,
ACR::requested_node_role(rdata->msg_info.msg));
acr->rx_request(rdata->msg_info.msg, rdata->pkt_info.timestamp);
// Canonicalize the public ID from the URI in the To header.
std::string public_id = PJUtils::public_id_from_uri(uri);
LOG_DEBUG("Process REGISTER for public ID %s", public_id.c_str());
// Get the call identifier and the cseq number from the respective headers.
std::string cid = PJUtils::pj_str_to_string((const pj_str_t*)&rdata->msg_info.cid->id);;
pjsip_msg *msg = rdata->msg_info.msg;
// Add SAS markers to the trail attached to the message so the trail
// becomes searchable.
LOG_DEBUG("Report SAS start marker - trail (%llx)", trail);
SAS::Marker start_marker(trail, MARKER_ID_START, 1u);
SAS::report_marker(start_marker);
PJUtils::report_sas_to_from_markers(trail, rdata->msg_info.msg);
PJUtils::mark_sas_call_branch_ids(trail, NULL, rdata->msg_info.msg);
// Query the HSS for the associated URIs.
std::vector<std::string> uris;
std::map<std::string, Ifcs> ifc_map;
std::string private_id;
std::string private_id_for_binding;
bool success = get_private_id(rdata, private_id);
if (!success)
{
// There are legitimate cases where we don't have a private ID
// here (for example, on a re-registration where Bono has set the
// Integrity-Protected header), so this is *not* a failure
// condition.
// We want the private ID here so that Homestead can use it to
// subscribe for updates from the HSS - but on a re-registration,
// Homestead should already have subscribed for updates during the
// initial registration, so we can just make a request using our
// public ID.
private_id = "";
// IMS compliant clients will always have the Auth header on all REGISTERs,
// including reREGISTERS. Non-IMS clients won't, but their private ID
// will always be the public ID with the sip: removed.
private_id_for_binding = PJUtils::default_private_id_from_uri(uri);
}
else
{
private_id_for_binding = private_id;
}
SAS::Event event(trail, SASEvent::REGISTER_START, 0);
event.add_var_param(public_id);
event.add_var_param(private_id);
SAS::report_event(event);
std::string regstate;
std::deque<std::string> ccfs;
std::deque<std::string> ecfs;
HTTPCode http_code = hss->update_registration_state(public_id,
private_id,
HSSConnection::REG,
regstate,
ifc_map,
uris,
ccfs,
ecfs,
trail);
if ((http_code != HTTP_OK) || (regstate != HSSConnection::STATE_REGISTERED))
{
// We failed to register this subscriber at the HSS. This indicates that the
// HSS is unavailable, the public identity doesn't exist or the public
// identity doesn't belong to the private identity.
// The client shouldn't retry when the subscriber isn't present in the
// HSS; reject with a 403 in this case.
//
// The client should retry on timeout but no other Clearwater nodes should
// (as Sprout will already have retried on timeout). Reject with a 504
// (503 is used for overload).
st_code = PJSIP_SC_SERVER_TIMEOUT;
if (http_code == HTTP_NOT_FOUND)
{
st_code = PJSIP_SC_FORBIDDEN;
}
LOG_ERROR("Rejecting register request with invalid public/private identity");
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Rejecting register request with invalid public/private identity";
event.add_var_param(error_msg);
SAS::report_event(event);
PJUtils::respond_stateless(stack_data.endpt,
rdata,
st_code,
NULL,
NULL,
NULL);
delete acr;
return;
}
// Determine the AOR from the first entry in the uris array.
std::string aor = uris.front();
LOG_DEBUG("REGISTER for public ID %s uses AOR %s", public_id.c_str(), aor.c_str());
// Get the system time in seconds for calculating absolute expiry times.
int now = time(NULL);
int expiry = 0;
bool is_initial_registration;
// Loop through each contact header. If every registration is an emergency
// registration and its expiry is 0 then reject with a 501.
// If there are valid registration updates to make then attempt to write to
// store, which also stops emergency registrations from being deregistered.
bool reject_with_501 = true;
bool any_emergency_registrations = false;
bool reject_with_400 = false;
pjsip_contact_hdr* contact_hdr = (pjsip_contact_hdr*)
pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_CONTACT, NULL);
while (contact_hdr != NULL)
{
pjsip_expires_hdr* expires = (pjsip_expires_hdr*)pjsip_msg_find_hdr(rdata->msg_info.msg, PJSIP_H_EXPIRES, NULL);
expiry = (contact_hdr->expires != -1) ? contact_hdr->expires :
(expires != NULL) ? expires->ivalue :
max_expires;
if ((contact_hdr->star) && (expiry != 0))
{
// Wildcard contact, which can only be used if the expiry is 0
LOG_ERROR("Attempted to deregister all bindings, but expiry value wasn't 0");
reject_with_400 = true;
break;
}
reject_with_501 = (reject_with_501 &&
PJUtils::is_emergency_registration(contact_hdr) && (expiry == 0));
any_emergency_registrations = (any_emergency_registrations ||
PJUtils::is_emergency_registration(contact_hdr));
contact_hdr = (pjsip_contact_hdr*) pjsip_msg_find_hdr(rdata->msg_info.msg,
PJSIP_H_CONTACT,
contact_hdr->next);
}
if (reject_with_400)
{
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Rejecting register request with invalid contact header";
event.add_var_param(error_msg);
SAS::report_event(event);
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_BAD_REQUEST,
NULL,
NULL,
NULL);
delete acr;
return;
}
if (reject_with_501)
{
LOG_ERROR("Rejecting register request as attempting to deregister an emergency registration");
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Rejecting deregister request for emergency registrations";
event.add_var_param(error_msg);
SAS::report_event(event);
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_NOT_IMPLEMENTED,
NULL,
NULL,
NULL);
delete acr;
return;
}
// Write to the local store, checking the remote store if there is no entry locally.
RegStore::AoR* aor_data = write_to_store(store, aor, rdata, now, expiry,
is_initial_registration, NULL, remote_store,
true, private_id_for_binding, trail);
if (aor_data != NULL)
{
// Log the bindings.
log_bindings(aor, aor_data);
// If we have a remote store, try to store this there too. We don't worry
// about failures in this case.
if (remote_store != NULL)
{
int tmp_expiry = 0;
bool ignored;
RegStore::AoR* remote_aor_data = write_to_store(remote_store, aor, rdata, now,
tmp_expiry, ignored, aor_data,
NULL, false, private_id_for_binding,
trail);
delete remote_aor_data;
}
}
else
{
// Failed to connect to the local store. Reject the register with a 500
// response.
// LCOV_EXCL_START - the can't fail to connect to the store we use for UT
st_code = PJSIP_SC_INTERNAL_SERVER_ERROR;
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Unable to access Registration Store";
event.add_var_param(error_msg);
SAS::report_event(event);
// LCOV_EXCL_STOP
}
// Build and send the reply.
pjsip_tx_data* tdata;
status = PJUtils::create_response(stack_data.endpt, rdata, st_code, NULL, &tdata);
if (status != PJ_SUCCESS)
{
// LCOV_EXCL_START - don't know how to get PJSIP to fail to create a response
std::string error_msg = "Error building REGISTER " + std::to_string(status) +
" response " + PJUtils::pj_status_to_string(status);
LOG_ERROR(error_msg.c_str());
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
event.add_var_param(error_msg);
SAS::report_event(event);
PJUtils::respond_stateless(stack_data.endpt,
rdata,
PJSIP_SC_INTERNAL_SERVER_ERROR,
NULL,
NULL,
NULL);
delete acr;
delete aor_data;
return;
// LCOV_EXCL_STOP
}
if (st_code != PJSIP_SC_OK)
{
// LCOV_EXCL_START - we only reject REGISTER if something goes wrong, and
// we aren't covering any of those paths so we can't hit this either
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "REGISTER failed with status code: " + std::to_string(st_code);
event.add_var_param(error_msg);
SAS::report_event(event);
delete acr;
delete aor_data;
return;
// LCOV_EXCL_STOP
}
// Add supported and require headers for RFC5626.
pjsip_generic_string_hdr* gen_hdr;
gen_hdr = pjsip_generic_string_hdr_create(tdata->pool,
&STR_SUPPORTED,
&STR_OUTBOUND);
if (gen_hdr == NULL)
{
// LCOV_EXCL_START - can't see how this could ever happen
LOG_ERROR("Failed to add RFC 5626 headers");
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Failed to add RFC 5636 headers";
event.add_var_param(error_msg);
SAS::report_event(event);
tdata->msg->line.status.code = PJSIP_SC_INTERNAL_SERVER_ERROR;
pjsip_tx_data_invalidate_msg(tdata);
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
delete acr;
delete aor_data;
return;
// LCOV_EXCL_STOP
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)gen_hdr);
// Add contact headers for all active bindings.
for (RegStore::AoR::Bindings::const_iterator i = aor_data->bindings().begin();
i != aor_data->bindings().end();
++i)
{
RegStore::AoR::Binding* binding = i->second;
if (binding->_expires > now)
{
// The binding hasn't expired. Parse the Contact URI from the store,
// making sure it is formatted as a name-address.
pjsip_uri* uri = PJUtils::uri_from_string(binding->_uri, tdata->pool, PJ_TRUE);
if (uri != NULL)
{
// Contact URI is well formed, so include this in the response.
pjsip_contact_hdr* contact = pjsip_contact_hdr_create(tdata->pool);
contact->star = 0;
contact->uri = uri;
contact->q1000 = binding->_priority;
contact->expires = binding->_expires - now;
pj_list_init(&contact->other_param);
for (std::map<std::string, std::string>::iterator j = binding->_params.begin();
j != binding->_params.end();
++j)
{
pjsip_param *new_param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
pj_strdup2(tdata->pool, &new_param->name, j->first.c_str());
pj_strdup2(tdata->pool, &new_param->value, j->second.c_str());
pj_list_insert_before(&contact->other_param, new_param);
}
// The pub-gruu parameter on the Contact header is calculated
// from the instance-id, to avoid unnecessary storage in
// memcached.
std::string gruu = binding->pub_gruu_quoted_string(tdata->pool);
if (!gruu.empty())
{
pjsip_param *new_param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
pj_strdup2(tdata->pool, &new_param->name, "pub-gruu");
pj_strdup2(tdata->pool, &new_param->value, gruu.c_str());
pj_list_insert_before(&contact->other_param, new_param);
}
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)contact);
}
else
{
// Contact URI is malformed. Log an error, but otherwise don't try and
// fix it.
// LCOV_EXCL_START hard to hit - needs bad data in the store
LOG_WARNING("Badly formed contact URI %s for address of record %s",
binding->_uri.c_str(), aor.c_str());
SAS::Event event(trail, SASEvent::REGISTER_FAILED, 0);
event.add_var_param(public_id);
std::string error_msg = "Badly formed contact URI - " + binding->_uri;
event.add_var_param(error_msg);
SAS::report_event(event);
// LCOV_EXCL_STOP
}
}
}
// Deal with path header related fields in the response.
pjsip_routing_hdr* path_hdr = (pjsip_routing_hdr*)
pjsip_msg_find_hdr_by_name(msg, &STR_PATH, NULL);
if ((path_hdr != NULL) &&
(!aor_data->bindings().empty()))
{
// We have bindings with path headers so we must require outbound.
pjsip_require_hdr* require_hdr = pjsip_require_hdr_create(tdata->pool);
require_hdr->count = 1;
require_hdr->values[0] = STR_OUTBOUND;
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)require_hdr);
}
// Echo back any Path headers as per RFC 3327, section 5.3. We take these
// from the request as they may not exist in the bindings any more if the
// bindings have expired.
while (path_hdr)
{
pjsip_msg_add_hdr(tdata->msg,
(pjsip_hdr*)pjsip_hdr_clone(tdata->pool, path_hdr));
path_hdr = (pjsip_routing_hdr*)
pjsip_msg_find_hdr_by_name(msg, &STR_PATH, path_hdr->next);
}
// Add the Service-Route header. It isn't safe to do this with the
// pre-built header from the global pool because the chaining data
// structures in the header may get overwritten, but it is safe to do a
// shallow clone.
pjsip_hdr* clone = (pjsip_hdr*)
pjsip_hdr_shallow_clone(tdata->pool, service_route);
pjsip_msg_insert_first_hdr(tdata->msg, clone);
// Add P-Associated-URI headers for all of the associated URIs.
for (std::vector<std::string>::iterator it = uris.begin();
it != uris.end();
it++)
{
pjsip_routing_hdr* pau =
identity_hdr_create(tdata->pool, STR_P_ASSOCIATED_URI);
pau->name_addr.uri = PJUtils::uri_from_string(*it, tdata->pool);
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)pau);
}
// Add a PCFA header.
PJUtils::add_pcfa_header(tdata->msg, tdata->pool, ccfs, ecfs, true);
// Pass the response to the ACR.
acr->tx_response(tdata->msg);
// Send the response, but prevent the transmitted data from being freed, as we may need to inform the
// ASes of the 200 OK response we sent.
pjsip_tx_data_add_ref(tdata);
status = pjsip_endpt_send_response2(stack_data.endpt, rdata, tdata, NULL, NULL);
// Send the ACR and delete it.
acr->send_message();
delete acr;
// TODO in sto397: we should do third-party registration once per
// service profile (i.e. once per iFC, using an arbitrary public
// ID). hss->get_subscription_data should be enhanced to provide an
// appropriate data structure (representing the ServiceProfile
// nodes) and we should loop through that. Don't send any register that
// contained emergency registrations to the application servers.
if (!any_emergency_registrations)
{
RegistrationUtils::register_with_application_servers(ifc_map[public_id],
store,
rdata,
tdata,
expiry,
is_initial_registration,
public_id,
trail);
}
// Now we can free the tdata.
pjsip_tx_data_dec_ref(tdata);
LOG_DEBUG("Report SAS end marker - trail (%llx)", trail);
SAS::Marker end_marker(trail, MARKER_ID_END, 1u);
SAS::report_marker(end_marker);
delete aor_data;
}
