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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
*
* Author and copyright: Laurent Thomas, open-cells.com
*
* 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
*/
#include <ctype.h>
#include <openair3/UICC/usim_interface.h>
#include <openair3/NAS/COMMON/milenage.h>
extern uint16_t NB_UE_INST;
#define UICC_SECTION "uicc"
#define UICC_CONFIG_HELP_OPTIONS " list of comma separated options to interface a simulated (real UICC to be developped). Available options: \n"\
" imsi: user imsi\n"\
" key: cyphering key\n"\
" opc: cyphering OPc\n"
/*-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/* configuration parameters for the rfsimulator device */
/* optname helpstr paramflags XXXptr defXXXval type numelt */
/*-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
#define UICC_PARAMS_DESC {\
{"imsi", "USIM IMSI\n", 0, strptr:&(uicc->imsiStr), defstrval:"2089900007487", TYPE_STRING, 0 },\
{"nmc_size" "number of digits in NMC", 0, iptr:&(uicc->nmc_size), defintval:2, TYPE_INT, 0 },\
{"key", "USIM Ki\n", 0, strptr:&(uicc->keyStr), defstrval:"fec86ba6eb707ed08905757b1bb44b8f", TYPE_STRING, 0 },\
{"opc", "USIM OPc\n", 0, strptr:&(uicc->opcStr), defstrval:"c42449363bbad02b66d16bc975d77cc1", TYPE_STRING, 0 },\
{"amf", "USIM amf\n", 0, strptr:&(uicc->amfStr), defstrval:"8000", TYPE_STRING, 0 },\
{"sqn", "USIM sqn\n", 0, strptr:&(uicc->sqnStr), defstrval:"000000", TYPE_STRING, 0 },\
{"dnn", "UE dnn (apn)\n", 0, strptr:&(uicc->dnnStr), defstrval:"oai", TYPE_STRING, 0 },\
{"nssai_sst", "UE nssai\n", 0, iptr:&(uicc->nssai_sst), defintval:1, TYPE_INT, 0 }, \
{"nssai_sd", "UE nssai\n", 0, iptr:&(uicc->nssai_sd), defintval:1, TYPE_INT, 0 }, \
};
static uicc_t** uiccArray=NULL;
const char *hexTable="0123456789abcdef";
static inline uint8_t mkDigit(unsigned char in) {
for (int i=0; i<16; i++)
if (tolower(in)==hexTable[i])
return i;
LOG_E(SIM,"Impossible hexa input: %c\n",in);
return 0;
}
static inline void to_hex(char *in, uint8_t *out, int size) {
for (size_t i=0; in[i]!=0 && i < size*2 ; i+=2) {
*out++=(mkDigit(in[i]) << 4) | mkDigit(in[i+1]);
}
}
uicc_t *init_uicc(char *sectionName) {
uicc_t *uicc=(uicc_t *)calloc(sizeof(uicc_t),1);
paramdef_t uicc_params[] = UICC_PARAMS_DESC;
// here we call usim simulation, but calling actual usim is quite simple
// the code is in open-cells.com => program_uicc open source
// we can read the IMSI from the USIM
// key, OPc, sqn, amf don't need to be read from the true USIM
int ret = config_get( uicc_params,sizeof(uicc_params)/sizeof(paramdef_t),sectionName);
AssertFatal(ret >= 0, "configuration couldn't be performed for uicc name: %s", sectionName);
LOG_I(SIM, "UICC simulation: IMSI=%s, Ki=%s, OPc=%s\n", uicc->imsiStr, uicc->keyStr, uicc->opcStr);
to_hex(uicc->keyStr,uicc->key, sizeof(uicc->key) );
to_hex(uicc->opcStr,uicc->opc, sizeof(uicc->opc) );
to_hex(uicc->sqnStr,uicc->sqn, sizeof(uicc->sqn) );
to_hex(uicc->amfStr,uicc->amf, sizeof(uicc->amf) );
return uicc;
}
void uicc_milenage_generate(uint8_t *autn, uicc_t *uicc) {
// here we call usim simulation, but calling actual usim is quite simple
// the code is in open-cells.com => program_uicc open source
milenage_generate(uicc->opc, uicc->amf, uicc->key,
uicc->sqn, uicc->rand, autn, uicc->ik, uicc->ck, uicc->milenage_res);
log_dump(SIM,uicc->opc,sizeof(uicc->opc), LOG_DUMP_CHAR,"opc:");
log_dump(SIM,uicc->amf,sizeof(uicc->amf), LOG_DUMP_CHAR,"amf:");
log_dump(SIM,uicc->key,sizeof(uicc->key), LOG_DUMP_CHAR,"key:");
log_dump(SIM,uicc->sqn,sizeof(uicc->sqn), LOG_DUMP_CHAR,"sqn:");
log_dump(SIM,uicc->rand,sizeof(uicc->rand), LOG_DUMP_CHAR,"rand:");
log_dump(SIM,uicc->ik,sizeof(uicc->ik), LOG_DUMP_CHAR,"milenage output ik:");
log_dump(SIM,uicc->ck,sizeof(uicc->ck), LOG_DUMP_CHAR,"milenage output ck:");
log_dump(SIM,uicc->milenage_res,sizeof(uicc->milenage_res), LOG_DUMP_CHAR,"milenage output res:");
log_dump(SIM,autn,sizeof(autn), LOG_DUMP_CHAR,"milenage output autn:");
}
uicc_t * checkUicc(int Mod_id) {
AssertFatal(Mod_id < NB_UE_INST, "Mod_id must be less than NB_UE_INST. Mod_id:%d NB_UE_INST:%d", Mod_id,NB_UE_INST);
if(uiccArray==NULL){
uiccArray=(uicc_t **)calloc(1,sizeof(uicc_t*)*NB_UE_INST);
}
if (!uiccArray[Mod_id]) {
char uiccName[64];
sprintf(uiccName,"uicc%d", Mod_id);
uiccArray[Mod_id]=(void*)init_uicc(uiccName);
}
return (uicc_t*) uiccArray[Mod_id];
}