int pcscf_unregister(udomain_t* _d, str * uri, str * received_host, int received_port) { int result = -1; struct pcontact * pcontact; struct pcontact_info ci; memset(&ci, 0, sizeof (struct pcontact_info)); pcontact_info_t search_ci; memset(&ci, 0, sizeof(struct pcontact_info)); sip_uri_t contact_uri; if (parse_uri(uri->s, uri->len, &contact_uri) != 0) { LM_WARN("Failed to parse aor [%.*s]\n", uri->len, uri->s); return -1; } search_ci.received_host.s = received_host->s; search_ci.received_host.len = received_host->len; search_ci.received_port = received_port; search_ci.received_proto = contact_uri.proto? contact_uri.proto : PROTO_UDP; search_ci.searchflag = SEARCH_RECEIVED; search_ci.via_host.s = received_host->s; search_ci.via_host.len = received_host->len; search_ci.via_port = received_port; search_ci.via_prot = search_ci.received_proto; search_ci.aor.s = uri->s; search_ci.aor.len = uri->len; search_ci.reg_state = PCONTACT_ANY; if (ul.get_pcontact(_d, &search_ci, &pcontact) == 0) { /* Lock this record while working with the data: */ ul.lock_udomain(_d, &pcontact->via_host, pcontact->via_port, pcontact->via_proto); LM_DBG("Updating contact [%.*s]: setting state to PCONTACT_DEREG_PENDING_PUBLISH\n", pcontact->aor.len, pcontact->aor.s); ci.reg_state = PCONTACT_DEREG_PENDING_PUBLISH; ci.num_service_routes = 0; if (ul.update_pcontact(_d, &ci, pcontact) == 0) result = 1; /* Unlock domain */ ul.unlock_udomain(_d, &pcontact->via_host, pcontact->via_port, pcontact->via_proto); } return result; }
int unregister(udomain_t* _d, str * uri, str * received_host, int received_port) { int result = -1; struct pcontact * pcontact; struct pcontact_info ci; memset(&ci, 0, sizeof (struct pcontact_info)); if (ul.get_pcontact(_d, uri, received_host, received_port, &pcontact) == 0) { /* Lock this record while working with the data: */ ul.lock_udomain(_d, &pcontact->aor, received_host, received_port); LM_DBG("Updating contact [%.*s]: setting state to PCONTACT_DEREG_PENDING_PUBLISH\n", pcontact->aor.len, pcontact->aor.s); ci.reg_state = PCONTACT_DEREG_PENDING_PUBLISH; ci.num_service_routes = 0; if (ul.update_pcontact(_d, &ci, pcontact) == 0) result = 1; // if (ul.delete_pcontact(_d, &pc->aor, received_host, received_port, pcontact) == 0) result = 1; /* Unlock domain */ ul.unlock_udomain(_d, &pcontact->aor, received_host, received_port); } return result; }
void async_aar_reg_callback(int is_timeout, void *param, AAAMessage *aaa, long elapsed_msecs) { struct cell *t = 0; pcontact_t* pcontact; unsigned int cdp_result; struct pcontact_info ci; udomain_t* domain_t; int finalReply = 0; AAASession *auth = 0; rx_authsessiondata_t* p_session_data = 0; int result = CSCF_RETURN_ERROR; pcontact_info_t contact_info; LM_DBG("Received AAR callback\n"); saved_transaction_local_t* local_data = (saved_transaction_local_t*) param; saved_transaction_t* data = local_data->global_data; domain_t = data->domain; int is_rereg = local_data->is_rereg; //before we do anything else, lets decrement the reference counter on replies lock_get(data->lock); data->answers_not_received--; if (data->answers_not_received <= 0) { finalReply = 1; } if (data->ignore_replies) { //there was obv. a subsequent error AFTER we had sent one/more AAR's - so we can ignore these replies and just free memory free_saved_transaction_data(local_data); if (finalReply) { free_saved_transaction_global_data(data); } return; } lock_release(data->lock); LM_DBG("received answer and we are waiting for [%d] answers so far failures flag is [%d]\n", data->answers_not_received, data->failed); if (tmb.t_lookup_ident(&t, data->tindex, data->tlabel) < 0) { LM_ERR("t_continue: transaction not found\n"); goto error; } //we have T, lets restore our state (esp. for AVPs) set_avp_list(AVP_TRACK_FROM | AVP_CLASS_URI, &t->uri_avps_from); set_avp_list(AVP_TRACK_TO | AVP_CLASS_URI, &t->uri_avps_to); set_avp_list(AVP_TRACK_FROM | AVP_CLASS_USER, &t->user_avps_from); set_avp_list(AVP_TRACK_TO | AVP_CLASS_USER, &t->user_avps_to); set_avp_list(AVP_TRACK_FROM | AVP_CLASS_DOMAIN, &t->domain_avps_from); set_avp_list(AVP_TRACK_TO | AVP_CLASS_DOMAIN, &t->domain_avps_to); if (is_timeout != 0) { LM_ERR("Error timeout when sending AAR message via CDP\n"); counter_inc(ims_qos_cnts_h.registration_aar_timeouts); goto error; } if (!aaa) { LM_ERR("Error sending message via CDP\n"); goto error; } counter_inc(ims_qos_cnts_h.registration_aars); counter_add(ims_qos_cnts_h.registration_aar_response_time, elapsed_msecs); counter_inc(ims_qos_cnts_h.registration_aar_replies_received); /* Process the response to AAR, retrieving result code and associated Rx session ID */ if (rx_process_aaa(aaa, &cdp_result) < 0) { LM_ERR("Failed to process AAA from PCRF\n"); //puri.host.len, puri.host.s); goto error; } if (cdp_result >= 2000 && cdp_result < 3000) { counter_inc(ims_qos_cnts_h.successful_registration_aars); if (is_rereg) { LM_DBG("this is a re-registration, therefore we don't need to do anything except know that the the subscription was successful\n"); result = CSCF_RETURN_TRUE; create_return_code(result); goto done; } //need to set Rx auth data to say this session has been successfully opened //This is used elsewhere to prevent acting on termination events when the session has not been opened //getting auth session auth = cdpb.AAAGetAuthSession(aaa->sessionId->data); if (!auth) { LM_DBG("Could not get Auth Session for session id: [%.*s]\n", aaa->sessionId->data.len, aaa->sessionId->data.s); goto error; } //getting session data p_session_data = (rx_authsessiondata_t*) auth->u.auth.generic_data; if (!p_session_data) { LM_DBG("Could not get session data on Auth Session for session id: [%.*s]\n", aaa->sessionId->data.len, aaa->sessionId->data.s); if (auth) cdpb.AAASessionsUnlock(auth->hash); goto error; } p_session_data->session_has_been_opened = 1; counter_inc(ims_qos_cnts_h.active_registration_rx_sessions); if (auth) cdpb.AAASessionsUnlock(auth->hash); LM_DBG("Success, received code: [%i] from PCRF for AAR request (contact: [%.*s]), (auth session id: %.*s)\n", cdp_result, local_data->contact.len, local_data->contact.s, local_data->auth_session_id.len, local_data->auth_session_id.s); LM_DBG("Registering for Usrloc callbacks on DELETE\n"); ul.lock_udomain(domain_t, &local_data->via_host, local_data->via_port, local_data->via_proto); contact_info.received_host = local_data->recv_host; contact_info.received_port = local_data->recv_port; contact_info.received_proto = local_data->recv_proto; contact_info.searchflag = (1 << SEARCH_RECEIVED); contact_info.aor = local_data->contact; contact_info.via_host = local_data->via_host; contact_info.via_port = local_data->via_port; contact_info.via_prot = local_data->via_proto; if (ul.get_pcontact(domain_t, &contact_info, &pcontact) != 0) { LM_ERR("Shouldn't get here, can't find contact....\n"); ul.unlock_udomain(domain_t, &local_data->via_host, local_data->via_port, local_data->via_proto); goto error; } //at this point we have the contact /*set the contact state to say we have succesfully done ARR for register and that we dont need to do it again * for the duration of the registration. * */ if (ul.update_rx_regsession(domain_t, &local_data->auth_session_id, pcontact) != 0) { LM_ERR("unable to update pcontact......\n"); ul.unlock_udomain(domain_t, &local_data->via_host, local_data->via_port, local_data->via_proto); goto error; } memset(&ci, 0, sizeof (struct pcontact_info)); ci.reg_state = PCONTACT_REG_PENDING_AAR; ci.num_service_routes = 0; ci.num_public_ids = 0; LM_DBG("impu: [%.*s] updating status to PCONTACT_REG_PENDING\n", pcontact->aor.len, pcontact->aor.s); ul.update_pcontact(domain_t, &ci, pcontact); //register for callbacks on contact ul.register_ulcb(pcontact, PCSCF_CONTACT_DELETE | PCSCF_CONTACT_EXPIRE, callback_pcscf_contact_cb, NULL); ul.unlock_udomain(domain_t, &local_data->via_host, local_data->via_port, local_data->via_proto); result = CSCF_RETURN_TRUE; } else { LM_DBG("Received negative reply from PCRF for AAR Request\n"); counter_inc(ims_qos_cnts_h.failed_registration_aars); result = CSCF_RETURN_FALSE; goto error; } //set success response code AVP create_return_code(result); goto done; error: //set failure response code create_return_code(result); done: if (t) tmb.unref_cell(t); //free memory if (aaa) cdpb.AAAFreeMessage(&aaa); if (finalReply) { tmb.t_continue(data->tindex, data->tlabel, data->act); free_saved_transaction_global_data(data); } free_saved_transaction_data(local_data); }
int ipsec_create(struct sip_msg* m, udomain_t* d) { pcontact_t* pcontact = NULL; struct pcontact_info ci; int ret = IPSEC_CMD_FAIL; // FAIL by default // Find the contact if(fill_contact(&ci, m) != 0) { LM_ERR("Error filling in contact data\n"); return ret; } ul.lock_udomain(d, &ci.via_host, ci.via_port, ci.via_prot); if (ul.get_pcontact(d, &ci, &pcontact) != 0) { LM_ERR("Contact doesn't exist\n"); goto cleanup; } // Get security parameters if(pcontact->security_temp == NULL) { LM_ERR("No security parameters found in contact\n"); goto cleanup; } if(pcontact->security_temp->type != SECURITY_IPSEC ) { LM_ERR("Unsupported security type: %d\n", pcontact->security_temp->type); goto cleanup; } ipsec_t* s = pcontact->security_temp->data.ipsec; if(update_contact_ipsec_params(s, m) != 0) { goto cleanup; } if(create_ipsec_tunnel(ci.received_host, s) != 0) { goto cleanup; } // TODO: Save security_tmp to security!!!!! if (ul.update_pcontact(d, &ci, pcontact) != 0) { LM_ERR("Error updating contact\n"); goto cleanup; } // Destroy the tunnel, if the contact expires if(ul.register_ulcb(pcontact, PCSCF_CONTACT_EXPIRE|PCSCF_CONTACT_DELETE, on_expire, NULL) != 1) { LM_ERR("Error subscribing for contact\n"); goto cleanup; } if(add_supported_secagree_header(m) != 0) { goto cleanup; } if(add_security_server_header(m, s) != 0) { goto cleanup; } ret = IPSEC_CMD_SUCCESS; // all good, set ret to SUCCESS, and exit cleanup: // Do not free str* sec_header! It will be freed in data_lump.c -> free_lump() ul.unlock_udomain(d, &ci.via_host, ci.via_port, ci.via_prot); pkg_free(ci.received_host.s); return ret; }
int process_contact(udomain_t * _d, int expires, str contact_uri, int contact_state) { char bufport[5], *rest, *sep, *val, *port, *trans; pcontact_t* pcontact; struct pcontact_info ci; struct sip_uri puri, uri; unsigned int received_proto, received_port_len; int local_time_now, rest_len, val_len, has_alias; int ret = RESULT_CONTACTS_FOUND; pcscf_act_time(); local_time_now = time_now; has_alias = 0; //get contact //if does not exist then add it //if it does exist check if state it terminated - if so delete it, if not update it memset(&ci, 0, sizeof (struct pcontact_info)); ci.num_public_ids = 0; ci.num_service_routes = 0; LM_DBG("Processing contact using contact from NOTIFY [%.*s]\n", contact_uri.len, contact_uri.s); if (parse_uri(contact_uri.s, contact_uri.len, &puri) < 0) { LM_DBG("Error parsing Contact URI <%.*s>\n", contact_uri.len, contact_uri.s); return RESULT_ERROR; } expires = local_time_now + expires; //turn expires into correct time since epoch format LM_DBG("Changed expires to format time since the epoch: %d", expires); ci.expires = expires; ci.reg_state = PCONTACT_REGISTERED; ul.lock_udomain(_d, &puri.host, puri.port_no, puri.proto); ci.aor = contact_uri; ci.via_host = puri.host; ci.via_prot = puri.proto; ci.via_port = puri.port_no; /* parse the uri in the NOTIFY */ if (parse_uri(contact_uri.s, contact_uri.len, &uri) != 0) { LM_ERR("Unable to parse contact in SIP notify [%.*s]\n", contact_uri.len, contact_uri.s); return RESULT_ERROR; } /*check for alias - NAT */ rest = uri.sip_params.s; rest_len = uri.sip_params.len; while (rest_len >= ALIAS_LEN) { if (strncmp(rest, ALIAS, ALIAS_LEN) == 0) { has_alias = 1; break; } sep = memchr(rest, 59 /* ; */, rest_len); if (sep == NULL) { LM_DBG("no alias param\n"); break; } else { rest_len = rest_len - (sep - rest + 1); rest = sep + 1; } } if (has_alias) { val = rest + ALIAS_LEN; val_len = rest_len - ALIAS_LEN; port = memchr(val, 126 /* ~ */, val_len); if (port == NULL) { LM_ERR("no '~' in alias param value\n"); return RESULT_ERROR; } port++; // received_port = atoi(port); trans = memchr(port, 126 /* ~ */, val_len - (port - val)); if (trans == NULL) { LM_ERR("no second '~' in alias param value\n"); return RESULT_ERROR; } received_port_len = trans - port; trans = trans + 1; received_proto = *trans - 48 /* char 0 */; memcpy(bufport, port, received_port_len); bufport[received_port_len]=0; ci.received_host.s = val; ci.received_host.len = port - val - 1; LM_DBG("Setting received host in search to [%.*s]\n", ci.received_host.len, ci.received_host.s); ci.received_port = atoi(bufport); LM_DBG("Setting received port in search to %d\n", ci.received_port); ci.received_proto = received_proto; LM_DBG("Setting received proto in search to %d\n", ci.received_proto); ci.searchflag = SEARCH_RECEIVED; } else { LM_DBG("Contact in NOTIFY does not have an alias....\n"); } if (ul.get_pcontact(_d, &ci, &pcontact) != 0) { //contact does not exist if (contact_state == STATE_TERMINATED) { LM_DBG("This contact: <%.*s> is in state terminated and is not in usrloc, ignore\n", contact_uri.len, contact_uri.s); ret = RESULT_CONTACTS_FOUND; goto done; } LM_WARN("This contact: <%.*s> is in state active and is not in usrloc - must be another contact on a different P so going to ignore\n", contact_uri.len, contact_uri.s); // LM_DBG("This contact: <%.*s> is in state active and is not in usrloc so adding it to usrloc, expires: %d which is in %d seconds\n", contact_uri.len, contact_uri.s, expires, expires-local_time_now); // if (ul.insert_pcontact(_d, &contact_uri, &ci, &pcontact) != 0) { // LM_ERR("Failed inserting new pcontact\n"); // ret = RESULT_ERROR; // goto done; // } else { // //register for callbacks on this contact so we can send PUBLISH to SCSCF should status change // LM_DBG("registering for UL callback\n"); // ul.register_ulcb(pcontact, PCSCF_CONTACT_DELETE | PCSCF_CONTACT_EXPIRE, callback_pcscf_contact_cb, NULL); // } } else {//contact exists if (contact_state == STATE_TERMINATED) { //delete contact LM_DBG("This contact <%.*s> is in state terminated and is in usrloc so removing it from usrloc\n", contact_uri.len, contact_uri.s); if (ul.delete_pcontact(_d, pcontact) != 0) { LM_DBG("failed to delete pcscf contact <%.*s> - not a problem this may have been removed by de registration", contact_uri.len, contact_uri.s); } /*TODO_LATEST - put this back */ } else {//state is active //update this contact LM_DBG("This contact: <%.*s> is in state active and is in usrloc so just updating - old expires: %li, new expires: %i which is in %i seconds\n", contact_uri.len, contact_uri.s, pcontact->expires, expires, expires - local_time_now); if (ul.update_pcontact(_d, &ci, pcontact) != 0) { LM_ERR("failed to update pcscf contact\n"); ret = RESULT_ERROR; goto done; } pcontact->expires = expires; } } done: ul.unlock_udomain(_d, &puri.host, puri.port_no, puri.proto); return ret; }
/** * Updates the registrar with the new values * @param req - the REGISTER request - to extract NAT info * @param rpl - the REGISTER reply - to extract contact info * @param is_star - whether this was a STAR contact header * @param expires_hdr - value of the Expires header * @param public_id - array of public identities attached to this contact * @param public_id_cnt - size of the public_id array * @param service_route - array of Service-Routes * @param service_route_cnt - size of the service_route array * @param requires_nat - if to create pinholes * @returns the maximum expiration time, -1 on error */ static inline int update_contacts(struct sip_msg *req,struct sip_msg *rpl, udomain_t* _d, unsigned char is_star,int expires_hdr, str *public_id,int public_id_cnt,str *service_route,int service_route_cnt, int requires_nat) { int local_time_now, expires=0; struct hdr_field* h; contact_t* c; struct sip_uri puri; struct pcontact_info ci; pcontact_t* pcontact; unsigned short port, proto; char *alias_start, *p, *port_s, *proto_s; char portbuf[5]; str alias_s; pcscf_act_time(); local_time_now = time_now; if (is_star) { /* first of all, we shouldn't get here... * then, we will update on NOTIFY */ return 0; } // Set the structure to "0", to make sure it's properly initialized memset(&ci, 0, sizeof(struct pcontact_info)); for (h = rpl->contact; h; h = h->next) { if (h->type == HDR_CONTACT_T && h->parsed) { for (c = ((contact_body_t*) h->parsed)->contacts; c; c = c->next) { expires = calc_contact_expires(c, expires_hdr, local_time_now); if (parse_uri(c->uri.s, c->uri.len, &puri) < 0) { LM_DBG("Error parsing Contact URI <%.*s>\n", c->uri.len, c->uri.s); continue; } //build contact info ci.aor = c->uri; ci.expires = expires; ci.public_ids = public_id; ci.num_public_ids = public_id_cnt; ci.service_routes = service_route; ci.num_service_routes = service_route_cnt; ci.reg_state = PCONTACT_REGISTERED|PCONTACT_REG_PENDING|PCONTACT_REG_PENDING_AAR; //we don't want to add contacts that did not come through us (pcscf) ci.received_host.len = 0; ci.received_host.s = 0; ci.received_port = 0; ci.received_proto = 0; port = puri.port_no ? puri.port_no : 5060; ci.via_host = puri.host; ci.via_port = port; ci.via_prot = puri.proto; ci.searchflag = SEARCH_NORMAL; /* this must be reset for each contact iteration */ if (puri.params.len > 6 && (alias_start = _strnistr(puri.params.s, "alias=", puri.params.len)) != NULL) { LM_DBG("contact has an alias [%.*s] - we can use that as the received\n", puri.params.len, puri.params.s); alias_s.len = puri.params.len - (alias_start - puri.params.s) - 6; alias_s.s = alias_start + 6; LM_DBG("alias [%.*s]\n", alias_s.len, alias_s.s); p = _strnistr(alias_s.s, "~", alias_s.len); if (p!=NULL) { ci.received_host.s = alias_s.s; ci.received_host.len = p - alias_s.s; LM_DBG("alias(host) [%.*s]\n", ci.received_host.len, ci.received_host.s); port_s = p+1; p = _strnistr(port_s, "~", alias_s.len - ci.received_host.len); if (p!=NULL) { LM_DBG("alias(port) [%.*s]\n", (int)(p - port_s) , port_s); memset(portbuf, 0, 5); memcpy(portbuf, port_s, (p-port_s)); port = atoi(portbuf); LM_DBG("alias(port) [%d]\n", port); proto_s = p + 1; memset(portbuf, 0, 5); memcpy(portbuf, proto_s, 1); proto = atoi(portbuf); LM_DBG("alias(proto) [%d]\n", proto); ci.received_port = port; ci.received_proto = proto; ci.searchflag = SEARCH_RECEIVED; } } } ul.lock_udomain(_d, &puri.host, port, puri.proto); if (ul.get_pcontact(_d, &ci, &pcontact) != 0) { //need to insert new contact if ((expires-local_time_now)<=0) { //remove contact - de-register LM_DBG("This is a de-registration for contact <%.*s> but contact is not in usrloc - ignore\n", c->uri.len, c->uri.s); goto next_contact; } LM_DBG("We don't add contact from the 200OK that did not go through us (ie, not present in explicit REGISTER that went through us\n"); // LM_DBG("Adding pcontact: <%.*s>, expires: %d which is in %d seconds\n", c->uri.len, c->uri.s, expires, expires-local_time_now); // ci.reg_state = PCONTACT_REGISTERED; // if (ul.insert_pcontact(_d, &c->uri, &ci, &pcontact) != 0) { // LM_ERR("Failed inserting new pcontact\n"); // } else { // //register for callbacks on this contact so we can send PUBLISH to SCSCF should status change // LM_DBG("registering for UL callback\n"); // ul.register_ulcb(pcontact, PCSCF_CONTACT_DELETE | PCSCF_CONTACT_EXPIRE, callback_pcscf_contact_cb, NULL); // //we also need to subscribe to reg event of this contact at SCSCF // } } else { //contact already exists - update LM_DBG("contact already exists and is in state (%d) : [%s]\n",pcontact->reg_state, reg_state_to_string(pcontact->reg_state)); if ((expires-local_time_now)<=0) { //remove contact - de-register LM_DBG("This is a de-registration for contact <%.*s>\n", c->uri.len, c->uri.s); if (ul.delete_pcontact(_d, pcontact) != 0) { LM_ERR("failed to delete pcscf contact <%.*s>\n", c->uri.len, c->uri.s); } //TODO_LATEST replace above } else { //update contact LM_DBG("Updating contact: <%.*s>, old expires: %li, new expires: %i which is in %i seconds\n", c->uri.len, c->uri.s, pcontact->expires-local_time_now, expires, expires-local_time_now); ci.reg_state = PCONTACT_REGISTERED; if (ul.update_pcontact(_d, &ci, pcontact) != 0) { LM_ERR("failed to update pcscf contact\n"); } pcontact->expires = expires; } } next_contact: ul.unlock_udomain(_d, &puri.host, port, puri.proto); } } } return 1; }
/*main event process function*/ void cdp_cb_event_process() { cdp_cb_event_t *ev; udomain_t* domain; pcontact_t* pcontact; str release_reason = {"QoS released", 12}; /* TODO: This could be a module parameter */ struct pcontact_info ci; memset(&ci, 0, sizeof (struct pcontact_info)); for (;;) { ev = pop_cdp_cb_event(); if (cdp_event_latency) { //track delays unsigned int diff = time(NULL) - ev->registered; if (diff > cdp_event_threshold) { switch (cdp_event_latency_loglevel) { case 0: LM_ERR("Took to long to pickup CDP callback event [%d] > [%d]\n", diff, cdp_event_threshold); break; case 1: LM_WARN("Took to long to pickup CDP callback event [%d] > [%d]\n", diff, cdp_event_threshold); break; case 2: LM_INFO("Took to long to pickup CDP callback event [%d] > [%d]\n", diff, cdp_event_threshold); break; case 3: LM_DBG("Took to long to pickup CDP callback event [%d] > [%d]\n", diff, cdp_event_threshold); break; default: LM_DBG("Unknown log level....printing as debug\n"); LM_DBG("Took to long to pickup CDP callback event [%d] > [%d]\n", diff, cdp_event_threshold); break; } } } LM_DBG("processing event [%d]\n", ev->event); rx_authsessiondata_t *p_session_data = ev->session_data; str *rx_session_id = &ev->rx_session_id; switch (ev->event) { case AUTH_EV_SESSION_TIMEOUT: case AUTH_EV_SESSION_GRACE_TIMEOUT: case AUTH_EV_RECV_ASR: LM_DBG("Received notification of ASR from transport plane or CDP timeout for CDP session with Rx session ID: [%.*s] and associated contact [%.*s]" " and domain [%.*s]\n", rx_session_id->len, rx_session_id->s, p_session_data->registration_aor.len, p_session_data->registration_aor.s, p_session_data->domain.len, p_session_data->domain.s); if (p_session_data->subscribed_to_signaling_path_status) { LM_DBG("This is a subscription to signalling bearer session"); //nothing to do here - just wait for AUTH_EV_SERVICE_TERMINATED event } else { LM_DBG("This is a media bearer session session"); //this is a media bearer session that was terminated from the transport plane - we need to terminate the associated dialog //so we set p_session_data->must_terminate_dialog to 1 and when we receive AUTH_EV_SERVICE_TERMINATED event we will terminate the dialog p_session_data->must_terminate_dialog = 1; } break; case AUTH_EV_SERVICE_TERMINATED: LM_DBG("Received notification of CDP TERMINATE of CDP session with Rx session ID: [%.*s] and associated contact [%.*s]" " and domain [%.*s]\n", rx_session_id->len, rx_session_id->s, p_session_data->registration_aor.len, p_session_data->registration_aor.s, p_session_data->domain.len, p_session_data->domain.s); if (p_session_data->subscribed_to_signaling_path_status) { LM_DBG("This is a subscription to signalling bearer session"); //instead of removing the contact from usrloc_pcscf we just change the state of the contact to TERMINATE_PENDING_NOTIFY //pcscf_registrar sees this, sends a SIP PUBLISH and on SIP NOTIFY the contact is deleted if (ul.register_udomain(p_session_data->domain.s, &domain) < 0) { LM_DBG("Unable to register usrloc domain....aborting\n"); return; } ul.lock_udomain(domain, &p_session_data->registration_aor); if (ul.get_pcontact(domain, &p_session_data->registration_aor, &pcontact) != 0) { LM_DBG("no contact found for terminated Rx reg session..... ignoring\n"); } else { LM_DBG("Updating contact [%.*s] after Rx reg session terminated, setting state to PCONTACT_DEREG_PENDING_PUBLISH\n", pcontact->aor.len, pcontact->aor.s); ci.reg_state = PCONTACT_DEREG_PENDING_PUBLISH; ci.num_service_routes = 0; ul.update_pcontact(domain, &ci, pcontact); } ul.unlock_udomain(domain, &p_session_data->registration_aor); } else { LM_DBG("This is a media bearer session session"); //we only terminate the dialog if this was triggered from the transport plane or timeout - i.e. if must_terminate_dialog is set //if this was triggered from the signalling plane (i.e. someone hanging up) then we don'y need to terminate the dialog if (p_session_data->must_terminate_dialog) { LM_DBG("Terminating dialog with callid, ftag, ttag: [%.*s], [%.*s], [%.*s]\n", p_session_data->callid.len, p_session_data->callid.s, p_session_data->ftag.len, p_session_data->ftag.s, p_session_data->ttag.len, p_session_data->ttag.s); dlgb.terminate_dlg(&p_session_data->callid, &p_session_data->ftag, &p_session_data->ttag, NULL, &release_reason); } } //free callback data if (p_session_data) { shm_free(p_session_data); p_session_data = 0; } break; default: break; } free_cdp_cb_event(ev); } }
/** * Updates the registrar with the new values * @param req - the REGISTER request - to extract NAT info * @param rpl - the REGISTER reply - to extract contact info * @param is_star - whether this was a STAR contact header * @param expires_hdr - value of the Expires header * @param public_id - array of public identities attached to this contact * @param public_id_cnt - size of the public_id array * @param service_route - array of Service-Routes * @param service_route_cnt - size of the service_route array * @param requires_nat - if to create pinholes * @returns the maximum expiration time, -1 on error */ static inline int update_contacts(struct sip_msg *req,struct sip_msg *rpl, udomain_t* _d, unsigned char is_star,int expires_hdr, str *public_id,int public_id_cnt,str *service_route,int service_route_cnt, int requires_nat) { int local_time_now, expires=0; struct hdr_field* h; contact_t* c; struct sip_uri puri; struct sip_uri parsed_received; struct pcontact_info ci; pcontact_t* pcontact; char srcip[50]; int_str val; pcscf_act_time(); local_time_now = time_now; if (is_star) { /* first of all, we shouldn't get here... * then, we will update on NOTIFY */ return 0; } // Set the structure to "0", to make sure it's properly initialized memset(&ci, 0, sizeof(struct pcontact_info)); for (h = rpl->contact; h; h = h->next) { if (h->type == HDR_CONTACT_T && h->parsed) for (c = ((contact_body_t*) h->parsed)->contacts; c; c = c->next) { expires = calc_contact_expires(c, expires_hdr, local_time_now); if (parse_uri(c->uri.s, c->uri.len, &puri) < 0) { LM_DBG("Error parsing Contact URI <%.*s>\n", c->uri.len, c->uri.s); continue; } //build contact info ci.expires = expires; ci.public_ids = public_id; ci.num_public_ids = public_id_cnt; ci.service_routes = service_route; ci.num_service_routes = service_route_cnt; ci.reg_state = PCONTACT_REGISTERED; ci.received_host.len = 0; ci.received_host.s = 0; ci.received_port = 0; ci.received_proto = 0; // Received Info: First try AVP, otherwise simply take the source of the request: memset(&val, 0, sizeof(int_str)); if (rcv_avp_name.n!=0 && search_first_avp(rcv_avp_type, rcv_avp_name, &val, 0) && val.s.len > 0) { if (val.s.len>RECEIVED_MAX_SIZE) { LM_ERR("received too long\n"); goto error; } if (parse_uri(val.s.s, val.s.len, &parsed_received) < 0) { LM_DBG("Error parsing Received URI <%.*s>\n", val.s.len, val.s.s); continue; } ci.received_host = parsed_received.host; ci.received_port = parsed_received.port_no; ci.received_proto = parsed_received.proto; } else { ci.received_host.len = ip_addr2sbuf(&req->rcv.src_ip, srcip, sizeof(srcip)); ci.received_host.s = srcip; ci.received_port = req->rcv.src_port; ci.received_proto = req->rcv.proto; } // Set to default, if not set: if (ci.received_port == 0) ci.received_port = 5060; ul.lock_udomain(_d, &c->uri); if (ul.get_pcontact(_d, &c->uri, &pcontact) != 0) { //need to insert new contact if ((expires-local_time_now)<=0) { //remove contact - de-register LM_DBG("This is a de-registration for contact <%.*s> but contact is not in usrloc - ignore\n", c->uri.len, c->uri.s); goto next_contact; } LM_DBG("Adding pcontact: <%.*s>, expires: %d which is in %d seconds\n", c->uri.len, c->uri.s, expires, expires-local_time_now); if (ul.insert_pcontact(_d, &c->uri, &ci, &pcontact) != 0) { LM_ERR("Failed inserting new pcontact\n"); } else { //register for callbacks on this contact so we can send PUBLISH to SCSCF should status change LM_DBG("registering for UL callback\n"); ul.register_ulcb(pcontact, PCSCF_CONTACT_DELETE | PCSCF_CONTACT_EXPIRE, callback_pcscf_contact_cb, NULL); //we also need to subscribe to reg event of this contact at SCSCF } } else { //contact already exists - update LM_DBG("contact already exists and is in state (%d) : [%s]\n",pcontact->reg_state, reg_state_to_string(pcontact->reg_state)); if ((expires-local_time_now)<=0) { //remove contact - de-register LM_DBG("This is a de-registration for contact <%.*s>\n", c->uri.len, c->uri.s); if (ul.delete_pcontact(_d, &c->uri, pcontact) != 0) { LM_ERR("failed to delete pcscf contact <%.*s>\n", c->uri.len, c->uri.s); } } else { //update contact LM_DBG("Updating contact: <%.*s>, old expires: %li, new expires: %i which is in %i seconds\n", c->uri.len, c->uri.s, pcontact->expires-local_time_now, expires, expires-local_time_now); if (ul.update_pcontact(_d, &ci, pcontact) != 0) { LM_ERR("failed to update pcscf contact\n"); } pcontact->expires = expires; } } next_contact: ul.unlock_udomain(_d, &c->uri); } } return 1; error: return 0; }
int process_contact(udomain_t * _d, int expires, str contact_uri, int contact_state) { pcontact_t* pcontact; struct pcontact_info ci; int local_time_now; int ret = RESULT_CONTACTS_FOUND; pcscf_act_time(); local_time_now = time_now; //get contact //if does not exist then add it //if it does exist check if state it terminated - if so delete it, if not update it memset(&ci, 0, sizeof(struct pcontact_info)); ci.num_public_ids=0; ci.num_service_routes=0; expires = local_time_now + expires; //turn expires into correct time since epoch format LM_DBG("Changed expires to format time since the epoch: %d", expires); ci.expires=expires; ci.reg_state = PCONTACT_REGISTERED; ul.lock_udomain(_d, &contact_uri); if (ul.get_pcontact(_d, &contact_uri, &pcontact) != 0) { //contact does not exist if (contact_state == STATE_TERMINATED) { LM_DBG("This contact: <%.*s> is in state terminated and is not in usrloc, ignore\n", contact_uri.len, contact_uri.s); ret = RESULT_CONTACTS_FOUND; goto done; } LM_DBG("This contact: <%.*s> is in state active and is not in usrloc so adding it to usrloc, expires: %d which is in %d seconds\n", contact_uri.len, contact_uri.s, expires, expires-local_time_now); if (ul.insert_pcontact(_d, &contact_uri, &ci, &pcontact) != 0) { LM_ERR("Failed inserting new pcontact\n"); ret = RESULT_ERROR; goto done; } else { //register for callbacks on this contact so we can send PUBLISH to SCSCF should status change LM_DBG("registering for UL callback\n"); ul.register_ulcb(pcontact, PCSCF_CONTACT_DELETE | PCSCF_CONTACT_EXPIRE, callback_pcscf_contact_cb, NULL); } } else {//contact exists if (contact_state == STATE_TERMINATED) { //delete contact LM_DBG("This contact <%.*s> is in state terminated and is in usrloc so removing it from usrloc\n", contact_uri.len, contact_uri.s); if (ul.delete_pcontact(_d, &contact_uri, pcontact) != 0) { LM_DBG("failed to delete pcscf contact <%.*s> - not a problem this may have been removed by de registration", contact_uri.len, contact_uri.s); } } else {//state is active //update this contact LM_DBG("This contact: <%.*s> is in state active and is in usrloc so just updating - old expires: %li, new expires: %i which is in %i seconds\n", contact_uri.len, contact_uri.s, pcontact->expires, expires, expires-local_time_now); if (ul.update_pcontact(_d, &ci, pcontact) != 0) { LM_ERR("failed to update pcscf contact\n"); ret = RESULT_ERROR; goto done; } pcontact->expires = expires; } } done: ul.unlock_udomain(_d, &contact_uri); return ret; }