112 lines
6.3 KiB
C
112 lines
6.3 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Author and copyright: Laurent Thomas, open-cells.com
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <ctype.h>
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#include <openair3/UICC/usim_interface.h>
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#include <openair3/NAS/COMMON/milenage.h>
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extern uint16_t NB_UE_INST;
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#define UICC_SECTION "uicc"
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#define UICC_CONFIG_HELP_OPTIONS " list of comma separated options to interface a simulated (real UICC to be developped). Available options: \n"\
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" imsi: user imsi\n"\
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" key: cyphering key\n"\
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" opc: cyphering OPc\n"
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/*-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
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/* configuration parameters for the rfsimulator device */
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/* optname helpstr paramflags XXXptr defXXXval type numelt */
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/*-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
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#define UICC_PARAMS_DESC { \
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{"imsi", "USIM IMSI\n", 0, strptr:&uicc->imsiStr, defstrval:"2089900007487", TYPE_STRING, 0 }, \
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{"nmc_size" "number of digits in NMC", 0, iptr:&uicc->nmc_size, defintval:2, TYPE_INT, 0 }, \
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{"key", "USIM Ki\n", 0, strptr:&uicc->keyStr, defstrval:"fec86ba6eb707ed08905757b1bb44b8f", TYPE_STRING, 0 }, \
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{"opc", "USIM OPc\n", 0, strptr:&uicc->opcStr, defstrval:"c42449363bbad02b66d16bc975d77cc1", TYPE_STRING, 0 }, \
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{"amf", "USIM amf\n", 0, strptr:&uicc->amfStr, defstrval:"8000", TYPE_STRING, 0 }, \
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{"sqn", "USIM sqn\n", 0, strptr:&uicc->sqnStr, defstrval:"000000", TYPE_STRING, 0 }, \
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{"dnn", "UE dnn (apn)\n", 0, strptr:&uicc->dnnStr, defstrval:"oai", TYPE_STRING, 0 }, \
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{"nssai_sst", "UE nssai\n", 0, iptr:&uicc->nssai_sst, defintval:1, TYPE_INT, 0 }, \
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{"nssai_sd", "UE nssai\n", 0, iptr:&uicc->nssai_sd, defintval:1, TYPE_INT, 0 }, \
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};
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static uicc_t** uiccArray=NULL;
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const char *hexTable="0123456789abcdef";
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static inline uint8_t mkDigit(unsigned char in) {
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for (int i=0; i<16; i++)
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if (tolower(in)==hexTable[i])
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return i;
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LOG_E(SIM,"Impossible hexa input: %c\n",in);
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return 0;
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}
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static inline void to_hex(char *in, uint8_t *out, int size) {
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for (size_t i=0; in[i]!=0 && i < size*2 ; i+=2) {
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*out++=(mkDigit(in[i]) << 4) | mkDigit(in[i+1]);
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}
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}
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uicc_t *init_uicc(char *sectionName) {
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uicc_t *uicc=(uicc_t *)calloc(sizeof(uicc_t),1);
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paramdef_t uicc_params[] = UICC_PARAMS_DESC;
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// here we call usim simulation, but calling actual usim is quite simple
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// the code is in open-cells.com => program_uicc open source
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// we can read the IMSI from the USIM
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// key, OPc, sqn, amf don't need to be read from the true USIM
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int ret = config_get( uicc_params,sizeof(uicc_params)/sizeof(paramdef_t),sectionName);
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AssertFatal(ret >= 0, "configuration couldn't be performed for uicc name: %s", sectionName);
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LOG_I(SIM, "UICC simulation: IMSI=%s, Ki=%s, OPc=%s\n", uicc->imsiStr, uicc->keyStr, uicc->opcStr);
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to_hex(uicc->keyStr,uicc->key, sizeof(uicc->key) );
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to_hex(uicc->opcStr,uicc->opc, sizeof(uicc->opc) );
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to_hex(uicc->sqnStr,uicc->sqn, sizeof(uicc->sqn) );
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to_hex(uicc->amfStr,uicc->amf, sizeof(uicc->amf) );
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return uicc;
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}
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void uicc_milenage_generate(uint8_t *autn, uicc_t *uicc) {
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// here we call usim simulation, but calling actual usim is quite simple
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// the code is in open-cells.com => program_uicc open source
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milenage_generate(uicc->opc, uicc->amf, uicc->key,
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uicc->sqn, uicc->rand, autn, uicc->ik, uicc->ck, uicc->milenage_res);
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log_dump(SIM,uicc->opc,sizeof(uicc->opc), LOG_DUMP_CHAR,"opc:");
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log_dump(SIM,uicc->amf,sizeof(uicc->amf), LOG_DUMP_CHAR,"amf:");
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log_dump(SIM,uicc->key,sizeof(uicc->key), LOG_DUMP_CHAR,"key:");
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log_dump(SIM,uicc->sqn,sizeof(uicc->sqn), LOG_DUMP_CHAR,"sqn:");
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log_dump(SIM,uicc->rand,sizeof(uicc->rand), LOG_DUMP_CHAR,"rand:");
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log_dump(SIM,uicc->ik,sizeof(uicc->ik), LOG_DUMP_CHAR,"milenage output ik:");
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log_dump(SIM,uicc->ck,sizeof(uicc->ck), LOG_DUMP_CHAR,"milenage output ck:");
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log_dump(SIM,uicc->milenage_res,sizeof(uicc->milenage_res), LOG_DUMP_CHAR,"milenage output res:");
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log_dump(SIM,autn,sizeof(autn), LOG_DUMP_CHAR,"milenage output autn:");
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}
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uicc_t * checkUicc(int Mod_id) {
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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);
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if(uiccArray==NULL){
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uiccArray=(uicc_t **)calloc(1,sizeof(uicc_t*)*NB_UE_INST);
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}
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if (!uiccArray[Mod_id]) {
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char uiccName[64];
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sprintf(uiccName,"uicc%d", Mod_id);
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uiccArray[Mod_id]=(void*)init_uicc(uiccName);
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}
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return (uicc_t*) uiccArray[Mod_id];
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}
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