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openairinterface5g/openair3/NAS/UE/EMM/Identification.c
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Robert Schmidt 0b91791f67 Use (std) bool instead of custom bool types 
OAI is riddled with boolean_t, FALSE, TRUE, etc. This makes no sense, as
there is a standard bool type, and could lead to nasty bugs if a
definition of a bool is non-standard (0 == false, true == !false). This
commit removes all non-standard bools in the whole project.
2022-06-27 10:07:48 +02:00

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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*****************************************************************************
Source Identification.c
Version 0.1
Date 2013/04/09
Product NAS stack
Subsystem EPS Mobility Management
Author Frederic Maurel
Description Defines the identification EMM procedure executed by the
Non-Access Stratum.
The identification procedure is used by the network to request
a particular UE to provide specific identification parameters
(IMSI, IMEI).
*****************************************************************************/
#include "emm_proc.h"
#include "nas_log.h"
#include "nas_timer.h"
#include "emmData.h"
#include "emm_sap.h"
#include "user_defs.h"
#include <stdlib.h> // malloc, free
#include <string.h> // memcpy
/****************************************************************************/
/**************** E X T E R N A L D E F I N I T I O N S ****************/
/****************************************************************************/
/****************************************************************************/
/******************* L O C A L D E F I N I T I O N S *******************/
/****************************************************************************/
char *emm_identity_type2str(int id_type) {
/* String representation of the requested identity type */
static char *_emm_identity_type_str[] = {
"NOT AVAILABLE", "IMSI", "IMEI", "IMEISV", "TMSI"
};
return _emm_identity_type_str[id_type];
}
/*
* --------------------------------------------------------------------------
* Internal data handled by the identification procedure in the UE
* --------------------------------------------------------------------------
*/
/****************************************************************************/
/****************** E X P O R T E D F U N C T I O N S ******************/
/****************************************************************************/
/*
* --------------------------------------------------------------------------
* Identification procedure executed by the UE
* --------------------------------------------------------------------------
*/
/****************************************************************************
** **
** Name: emm_proc_identification_request() **
** **
** Description: Performs the MME requested identification procedure. **
** **
** 3GPP TS 24.301, section 5.4.4.3 **
** Upon receiving the IDENTITY REQUEST message, the UE shall **
** send an IDENTITY RESPONSE message to the network. The **
** IDENTITY RESPONSE message shall contain the identifica- **
** tion parameters as requested by the network. **
** **
** Inputs: type: Type of the requested identity **
** Others: None **
** **
** Outputs: None **
** Return: RETURNok, RETURNerror **
** Others: None **
** **
***************************************************************************/
int emm_proc_identification_request(nas_user_t *user, emm_proc_identity_type_t type)
{
LOG_FUNC_IN;
int rc;
emm_sap_t emm_sap;
LOG_TRACE(INFO, "EMM-PROC - Identification requested type = %s (%d)",
emm_identity_type2str(type), type);
/* Setup EMM procedure handler to be executed upon receiving
* lower layer notification */
rc = emm_proc_lowerlayer_initialize(user->lowerlayer_data, NULL, NULL, NULL, NULL);
if (rc != RETURNok) {
LOG_TRACE(WARNING,
"EMM-PROC - Failed to initialize EMM procedure handler");
LOG_FUNC_RETURN (RETURNerror);
}
emm_sap.u.emm_as.u.security.identType = EMM_IDENT_TYPE_NOT_AVAILABLE;
switch (type) {
case EMM_IDENT_TYPE_IMSI: {
imsi_t modified_imsi;
/* International Mobile Subscriber Identity is requested */
if (user->emm_data->imsi) {
memcpy (&modified_imsi, user->emm_data->imsi, sizeof (modified_imsi));
/* LW: Eventually replace the 0xF value set in MNC digit 3 by a 0 to avoid IMSI to be truncated before reaching HSS */
if (modified_imsi.u.num.digit6 == 0xF) {
modified_imsi.u.num.digit6 = 0;
}
emm_sap.u.emm_as.u.security.identType = EMM_IDENT_TYPE_IMSI;
emm_sap.u.emm_as.u.security.imsi = &modified_imsi;
LOG_TRACE(INFO, "EMM-PROC - IMSI = %u%u%u %u%u%u %u%u%u%u%x%x%x%x%x",
emm_sap.u.emm_as.u.security.imsi->u.num.digit1,
emm_sap.u.emm_as.u.security.imsi->u.num.digit2,
emm_sap.u.emm_as.u.security.imsi->u.num.digit3,
emm_sap.u.emm_as.u.security.imsi->u.num.digit4,
emm_sap.u.emm_as.u.security.imsi->u.num.digit5,
emm_sap.u.emm_as.u.security.imsi->u.num.digit6,
emm_sap.u.emm_as.u.security.imsi->u.num.digit7,
emm_sap.u.emm_as.u.security.imsi->u.num.digit8,
emm_sap.u.emm_as.u.security.imsi->u.num.digit9,
emm_sap.u.emm_as.u.security.imsi->u.num.digit10,
emm_sap.u.emm_as.u.security.imsi->u.num.digit11,
emm_sap.u.emm_as.u.security.imsi->u.num.digit12,
emm_sap.u.emm_as.u.security.imsi->u.num.digit13,
emm_sap.u.emm_as.u.security.imsi->u.num.digit14,
emm_sap.u.emm_as.u.security.imsi->u.num.digit15);
}
break;
}
case EMM_IDENT_TYPE_IMEI:
/* International Mobile Equipment Identity is requested */
if (user->emm_data->imei) {
emm_sap.u.emm_as.u.security.identType = EMM_IDENT_TYPE_IMEI;
emm_sap.u.emm_as.u.security.imei = user->emm_data->imei;
}
break;
case EMM_IDENT_TYPE_TMSI:
/* Temporary Mobile Subscriber Identity is requested */
if (user->emm_data->guti) {
emm_sap.u.emm_as.u.security.identType = EMM_IDENT_TYPE_TMSI;
emm_sap.u.emm_as.u.security.tmsi = user->emm_data->guti->m_tmsi;
}
break;
default:
/* Other identities are not available */
break;
}
/*
* Notify EMM-AS SAP that Identity Response message has to be sent
* to the MME
*/
emm_sap.primitive = EMMAS_SECURITY_RES;
emm_sap.u.emm_as.u.security.guti = user->emm_data->guti;
emm_sap.u.emm_as.u.security.ueid = user->ueid;
emm_sap.u.emm_as.u.security.msgType = EMM_AS_MSG_TYPE_IDENT;
/* Setup EPS NAS security data */
emm_as_set_security_data(&emm_sap.u.emm_as.u.security.sctx, user->emm_data->security, false, true);
rc = emm_sap_send(user, &emm_sap);
LOG_FUNC_RETURN (rc);
}
/****************************************************************************/
/********************* L O C A L F U N C T I O N S *********************/
/****************************************************************************/
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