573 lines
16 KiB
Plaintext
573 lines
16 KiB
Plaintext
/* MME (Mobility Management Engine) test suite in TTCN-3
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* (C) 2019 Harald Welte <laforge@gnumonks.org>
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* All rights reserved.
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*
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* Released under the terms of GNU General Public License, Version 2 or
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* (at your option) any later version.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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module MME_Tests {
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import from General_Types all;
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import from S1AP_Types all;
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import from S1AP_Templates all;
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import from S1AP_Emulation all;
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import from S1AP_PDU_Descriptions all;
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import from S1AP_IEs all;
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import from NAS_EPS_Types all;
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import from NAS_Templates all;
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import from DIAMETER_Types all;
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import from DIAMETER_Templates all;
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import from DIAMETER_Emulation all;
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import from SGsAP_Types all;
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import from SGsAP_Templates all;
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import from SGsAP_Emulation all;
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import from LTE_CryptoFunctions all;
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import from L3_Templates all;
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import from DNS_Helpers all;
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import from Osmocom_Types all;
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friend module MME_Tests_SGsAP;
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/* (maximum) number of emulated eNBs */
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const integer NUM_ENB := 3;
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/* (maximum) number of emulated UEs */
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const integer NUM_UE := 3;
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/* parameters of emulated ENB */
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type record EnbParams {
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Global_ENB_ID global_enb_id,
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integer cell_identity,
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SupportedTAs supported_tas
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}
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/* parameters of emulated UE */
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type record UeParams {
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hexstring imsi
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}
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type component MTC_CT {
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/* S1 intreface of emulated ENBs */
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var EnbParams g_enb_pars[NUM_ENB];
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var S1AP_Emulation_CT vc_S1AP[NUM_ENB];
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port S1AP_PT S1AP_UNIT[NUM_ENB];
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port S1APEM_PROC_PT S1AP_PROC[NUM_ENB];
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/* S6a/S6d interface of emulated HSS */
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var DIAMETER_Emulation_CT vc_DIAMETER;
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port DIAMETER_PT DIAMETER_UNIT;
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port DIAMETEREM_PROC_PT DIAMETER_PROC;
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/* SGs interface of emulated MSC/VLR */
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var SGsAP_Emulation_CT vc_SGsAP;
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port SGsAP_PT SGsAP_UNIT;
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port SGsAPEM_PROC_PT SGsAP_PROC;
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var UeParams g_ue_pars[NUM_UE];
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}
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type component ConnHdlr extends S1AP_ConnHdlr, SGsAP_ConnHdlr, DIAMETER_ConnHdlr {
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var ConnHdlrPars g_pars;
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timer g_Tguard := 30.0;
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}
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type record ConnHdlrPars {
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/* copied over from MTC_CT on start of component */
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EnbParams enb_pars[NUM_ENB],
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/* copied over from MTC_CT on start of component */
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UeParams ue_pars,
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/* currently used MME (index into enb_pars, S1AP, ...) */
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integer mme_idx
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}
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modulepar {
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/* S1 interface */
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charstring mp_mme_ip := "127.0.0.1";
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integer mp_mme_s1ap_port := 36412;
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charstring mp_s1_local_ip := "127.0.0.1";
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integer mp_s1_local_port := 50000;
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/* S6 interface */
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charstring mp_s6_local_ip := "127.0.0.4";
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integer mp_s6_local_port := 3868;
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/* SGs interface */
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charstring mp_sgs_local_ip := "127.0.0.1";
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integer mp_sgs_local_port := 29118;
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charstring mp_vlr_name := "vlr.example.net";
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charstring mp_mme_name := "mmec01.mmegi0001.mme.epc.mnc070.mcc901.3gppnetwork.org";
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}
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/* send incoming unit data messages (like reset) to global SGsAP_UNIT port */
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friend function ForwardUnitdataCallback(PDU_SGsAP msg)
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runs on SGsAP_Emulation_CT return template PDU_SGsAP {
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SGsAP_UNIT.send(msg);
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return omit;
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}
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friend function f_init_sgsap(charstring id) runs on MTC_CT {
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id := id & "-SGsAP";
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var SGsAPOps ops := {
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create_cb := refers(SGsAP_Emulation.ExpectedCreateCallback),
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unitdata_cb := refers(ForwardUnitdataCallback)
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}
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var SGsAP_conn_parameters pars := {
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remote_ip := "",
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remote_sctp_port := -1,
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local_ip := mp_sgs_local_ip,
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local_sctp_port := mp_sgs_local_port
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}
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vc_SGsAP := SGsAP_Emulation_CT.create(id);
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map(vc_SGsAP:SGsAP, system:SGsAP_CODEC_PT);
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connect(vc_SGsAP:SGsAP_PROC, self:SGsAP_PROC);
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connect(vc_SGsAP:SGsAP_UNIT, self:SGsAP_UNIT);
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vc_SGsAP.start(SGsAP_Emulation.main(ops, pars, id));
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}
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/* send incoming unit data messages (like reset) to global S1AP_UNIT port */
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friend function S1apForwardUnitdataCallback(S1AP_PDU msg)
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runs on S1AP_Emulation_CT return template S1AP_PDU {
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S1AP_UNIT.send(msg);
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return omit;
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}
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friend function S1apCreateCallback(S1AP_PDU msg, template (omit) MME_UE_S1AP_ID mme_id,
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template (omit) ENB_UE_S1AP_ID enb_id, charstring id)
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runs on S1AP_Emulation_CT return S1AP_ConnHdlr
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{
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setverdict(fail, "implement this");
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mtc.stop;
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}
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friend function f_init_one_enb(charstring id, integer num := 0) runs on MTC_CT {
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id := id & "-S1AP" & int2str(num);
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var S1APOps ops := {
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create_cb := refers(S1apCreateCallback),
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unitdata_cb := refers(S1apForwardUnitdataCallback)
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}
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var S1AP_conn_parameters pars := {
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remote_ip := mp_mme_ip,
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remote_sctp_port := mp_mme_s1ap_port,
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local_ip := mp_s1_local_ip,
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local_sctp_port := mp_s1_local_port + num,
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role := NAS_ROLE_UE
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}
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var PLMNidentity plmn_id := '00f110'O;
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var EnbParams enb_pars := {
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global_enb_id := {
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pLMNidentity := plmn_id,
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eNB_ID := {
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macroENB_ID := int2bit(num, 20)
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},
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iE_Extensions := omit
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},
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cell_identity := num,
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supported_tas := {
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{
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tAC := int2oct(12345, 2),
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broadcastPLMNs := { plmn_id },
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iE_Extensions := omit
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}
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}
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};
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g_enb_pars[num] := enb_pars;
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vc_S1AP[num] := S1AP_Emulation_CT.create(id);
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map(vc_S1AP[num]:S1AP, system:S1AP_CODEC_PT);
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connect(vc_S1AP[num]:S1AP_PROC, self:S1AP_PROC[num]);
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connect(vc_S1AP[num]:S1AP_UNIT, self:S1AP_UNIT[num]);
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vc_S1AP[num].start(S1AP_Emulation.main(ops, pars, id));
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S1AP_UNIT[num].receive(S1APEM_Event:{up_down:=S1APEM_EVENT_UP});
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}
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friend function f_init_one_ue(inout UeParams uep, integer imsi_suffix) {
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uep := {
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imsi := f_gen_imsi(imsi_suffix)
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}
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}
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friend function f_init_s1ap(charstring id, integer imsi_suffix) runs on MTC_CT {
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var integer i;
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for (i := 0; i < NUM_ENB; i := i+1) {
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f_init_one_enb(id, i);
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}
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for (i := 0; i < NUM_UE; i := i+1) {
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f_init_one_ue(g_ue_pars[i], i*1000 + imsi_suffix);
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}
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}
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friend function DiameterForwardUnitdataCallback(PDU_DIAMETER msg)
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runs on DIAMETER_Emulation_CT return template PDU_DIAMETER {
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DIAMETER_UNIT.send(msg);
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return omit;
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}
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friend function f_init_diameter(charstring id) runs on MTC_CT {
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var DIAMETEROps ops := {
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create_cb := refers(DIAMETER_Emulation.ExpectedCreateCallback),
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unitdata_cb := refers(DiameterForwardUnitdataCallback)
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};
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var DIAMETER_conn_parameters pars := {
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remote_ip := mp_mme_ip,
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remote_sctp_port := -1,
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local_ip := mp_s6_local_ip,
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local_sctp_port := mp_s6_local_port
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};
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vc_DIAMETER := DIAMETER_Emulation_CT.create(id);
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map(vc_DIAMETER:DIAMETER, system:DIAMETER_CODEC_PT);
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connect(vc_DIAMETER:DIAMETER_UNIT, self:DIAMETER_UNIT);
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connect(vc_DIAMETER:DIAMETER_PROC, self:DIAMETER_PROC);
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vc_DIAMETER.start(DIAMETER_Emulation.main(ops, pars, id));
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}
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friend template (value) TAI ts_enb_S1AP_TAI(EnbParams enb) := {
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pLMNidentity := enb.global_enb_id.pLMNidentity,
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tAC := enb.supported_tas[0].tAC,
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iE_Extensions := omit
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}
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friend template (value) EUTRAN_CGI ts_enb_S1AP_CGI(EnbParams enb) := {
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pLMNidentity := enb.global_enb_id.pLMNidentity,
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cell_ID := int2bit(enb.cell_identity, 28),
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iE_Extensions := omit
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}
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/* generate parameters for a connection handler */
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friend function f_init_pars(integer ue_idx := 0)
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runs on MTC_CT return ConnHdlrPars {
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var ConnHdlrPars pars := {
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enb_pars := g_enb_pars,
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ue_pars := g_ue_pars[ue_idx],
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mme_idx := 0
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};
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return pars;
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}
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type function void_fn(ConnHdlrPars pars) runs on ConnHdlr;
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/* start a connection handler with given parameters */
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friend function f_start_handler_with_pars(void_fn fn, ConnHdlrPars pars, integer s1ap_idx := 0)
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runs on MTC_CT return ConnHdlr {
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var ConnHdlr vc_conn;
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var charstring id := testcasename() & int2str(s1ap_idx);
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vc_conn := ConnHdlr.create(id);
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/* S1AP part */
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connect(vc_conn:S1AP, vc_S1AP[s1ap_idx]:S1AP_CLIENT);
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connect(vc_conn:S1AP_PROC, vc_S1AP[s1ap_idx]:S1AP_PROC);
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if (isbound(vc_SGsAP)) {
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/* SGsAP part */
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connect(vc_conn:SGsAP, vc_SGsAP:SGsAP_CLIENT);
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connect(vc_conn:SGsAP_PROC, vc_SGsAP:SGsAP_PROC);
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}
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if (isbound(vc_DIAMETER)) {
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connect(vc_conn:DIAMETER, vc_DIAMETER:DIAMETER_CLIENT);
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connect(vc_conn:DIAMETER_PROC, vc_DIAMETER:DIAMETER_PROC);
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}
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/* We cannot use vc_conn.start(f_init_handler(fn, id, pars)); as we cannot have
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* a stand-alone 'derefers()' call, see https://www.eclipse.org/forums/index.php/t/1091364/ */
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vc_conn.start(derefers(fn)(pars));
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return vc_conn;
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}
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/* altstep for the global guard timer */
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private altstep as_Tguard()runs on ConnHdlr {
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[] g_Tguard.timeout {
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setverdict(fail, "Tguard timeout");
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mtc.stop;
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}
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}
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friend function f_init_handler(ConnHdlrPars pars, float t_guard := 30.0) runs on ConnHdlr {
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/* make parameters available via component variable */
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g_pars := pars;
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/* start guard timre and activate it as default */
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g_Tguard.start(t_guard);
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activate(as_Tguard());
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if (DIAMETER_PROC.checkstate("Connected")) {
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f_diameter_expect(g_pars.ue_pars.imsi);
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}
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if (SGsAP_PROC.checkstate("Connected")) {
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/* Route all SGsAP mesages for our IMSIto us */
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f_create_sgsap_expect(pars.ue_pars.imsi);
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}
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}
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friend function f_s1ap_setup(integer idx := 0, template Cause cause := omit) runs on MTC_CT {
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var template (present) Cause exp_cause;
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var boolean exp_fail := false;
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timer T := 5.0;
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if (not istemplatekind(cause, "omit")) {
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exp_fail := true;
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exp_cause := cause;
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}
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S1AP_UNIT[idx].send(ts_S1AP_SetupReq(g_enb_pars[idx].global_enb_id,
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g_enb_pars[idx].supported_tas, v32));
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T.start;
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alt {
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[exp_fail] S1AP_UNIT[idx].receive(tr_S1AP_SetupFail(exp_cause)) {
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setverdict(pass);
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}
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[not exp_fail] S1AP_UNIT[idx].receive(tr_S1AP_SetupResp) {
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setverdict(pass);
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}
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[] S1AP_UNIT[idx].receive {
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setverdict(fail, "Received unexpected S1AP");
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}
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[] T.timeout {
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setverdict(fail, "Timeout waiting for S1AP Setup result");
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}
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}
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}
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/* Unsuccessful S1 Setup procedure to MME (wrong PLMN) */
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testcase TC_s1ap_setup_wrong_plmn() runs on MTC_CT {
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var charstring id := testcasename();
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f_init_s1ap(id, 1);
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g_enb_pars[0].global_enb_id.pLMNidentity := '62F224'O;
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f_s1ap_setup(0, {misc:=unknown_PLMN});
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}
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/* Unsuccessful S1 Setup procedure to MME (wrong PLMN) */
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testcase TC_s1ap_setup_wrong_tac() runs on MTC_CT {
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var charstring id := testcasename();
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f_init_s1ap(id, 2);
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g_enb_pars[0].supported_tas[0].broadcastPLMNs[0] := '62F224'O;
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f_s1ap_setup(0, {misc:=unknown_PLMN});
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}
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/* Successful S1 Setup procedure to MME */
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testcase TC_s1ap_setup() runs on MTC_CT {
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var charstring id := testcasename();
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f_init_s1ap(id, 3);
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f_s1ap_setup(0);
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}
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private const EPS_QualityOfServiceV c_NAS_defaultQoS := {
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qCI := '00'O,
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maxBitRateUplink := omit,
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maxBitRateDownlink := omit,
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guaranteedBitRateUplink := omit,
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guaranteedBitRateDownlink := omit,
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maxBitRateUplinkExt := omit,
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maxBitRateDownlinkExt := omit,
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guaranteedBitRateUplinkExt := omit,
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guaranteedBitRateDownlinkExt := omit,
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maxBitRateUplinkExt2 := omit,
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maxBitRateDownlinkExt2 := omit,
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guaranteedBitRateUplinkExt2 := omit,
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guaranteedBitRateDownlinkExt2 := omit
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};
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private const UENetworkCapabilityV c_NAS_defaultUeNetCap := {
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eEA := '10000000'B,
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eIA := '11000000'B,
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uEA := omit,
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uIA := omit,
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uCS2 := omit,
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nF := omit,
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vCC := omit,
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lCS := omit,
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lPP := omit,
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aCC_CSFB := omit,
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h245_ASH := omit,
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proSe := omit,
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proSe_dd := omit,
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proSe_dc := omit,
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proSe_relay := omit,
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cP_CIoT := omit,
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uP_CIoT := omit,
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s1_Udata := omit,
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eRwoPDN := omit,
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hC_CP_CIoT := omit,
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ePCO := omit,
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multipleDRB := omit,
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v2XPC5 := omit,
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restrictEC := omit,
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cPbackoff := omit,
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dCNR := omit,
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n1Mode := omit,
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sGC := omit,
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spare1 := omit,
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spare := omit
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};
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private const octetstring c_NAS_defaultAPN := '00'O;
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private altstep as_s1ap_handle_auth() runs on ConnHdlr {
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var PDU_NAS_EPS rx_nas;
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[] S1AP.receive(tr_NAS_AuthReq) -> value rx_nas {
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/* static XRES result as we fixed the HSS RAND value and always have the following
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RAND: 20080c3818183b522614162c07601d0d
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AUTN: f11b89a2a8be00001f9c526f3d75d44c
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IK: 11329aae8e8d2941bb226b2061137c58
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CK: 740d62df9803eebde5120acf358433d0
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RES: 6a91970e838fd079
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SRES: e91e4777
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Kc: 3b0f999e42198874
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SQN: 32
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IND: 0
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*/
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/* KASME: 95AFAD9A0D29AFAA079A9451DF7161D7EE4CBF2AF9387F766D058BB6B44B905D */
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const OCT16 ck := '740d62df9803eebde5120acf358433d0'O;
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const OCT16 ik := '11329aae8e8d2941bb226b2061137c58'O;
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const OCT16 autn := 'f11b89a2a8be00001f9c526f3d75d44c'O;
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const OCT8 res := '6a91970e838fd079'O;
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const OCT3 plmn_id := '00F110'O;
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const OCT6 sqn := '000000000020'O;
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const OCT6 ak := substr(autn, 0, 6) xor4b sqn;
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var octetstring kasme := f_kdf_kasme(ck, ik, plmn_id, sqn, ak);
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var S1APEM_Config cfg := {
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set_nas_keys := {
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k_nas_int := f_kdf_nas_int(1, kasme),
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k_nas_enc := f_kdf_nas_enc(1, kasme)
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}
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};
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S1AP.send(cfg);
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S1AP.send(ts_NAS_AuthResp(res));
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}
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}
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private altstep as_s1ap_handle_sec_mode() runs on ConnHdlr {
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var PDU_NAS_EPS rx_nas;
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var NAS_SecurityAlgorithmsV alg := {
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typeOfIntegrityProtection := '001'B,
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spare1 := '0'B,
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typeOfCiphering := '000'B,
|
|
spare2 := '0'B
|
|
};
|
|
var NAS_KeySetIdentifierV kset_id := {
|
|
identifier := '000'B,
|
|
tSC := '0'B
|
|
};
|
|
[] S1AP.receive(tr_NAS_SecModeCmd(alg, kset_id, ?)) {
|
|
S1AP.send(ts_NAS_SecModeCmpl);
|
|
}
|
|
}
|
|
|
|
/* Exepect AuthInfoReq (AIR) from HSS; respond with AuthInforAnswer (AIA) */
|
|
private altstep as_DIA_AuthInfo() runs on ConnHdlr {
|
|
var PDU_DIAMETER rx_dia;
|
|
[] DIAMETER.receive(tr_DIA_AIR(g_pars.ue_pars.imsi)) -> value rx_dia {
|
|
var template (omit) AVP avp;
|
|
var octetstring sess_id;
|
|
var octetstring vplmn_id;
|
|
var hexstring imsi;
|
|
var template (value) AVP_list auth_info_content;
|
|
|
|
/* retrieve input data */
|
|
imsi := valueof(f_DIAMETER_get_imsi(rx_dia));
|
|
avp := f_DIAMETER_get_avp(rx_dia, c_AVP_Code_BASE_NONE_Session_Id);
|
|
sess_id := valueof(avp.avp_data.avp_BASE_NONE_Session_Id);
|
|
avp := f_DIAMETER_get_avp(rx_dia, c_AVP_Code_AAA_3GPP_Visited_PLMN_Id);
|
|
vplmn_id := valueof(avp.avp_data.avp_AAA_3GPP_Visited_PLMN_Id);
|
|
|
|
/* compute tuple */
|
|
auth_info_content := { ts_AVP_EutranVec(1, '20080c3818183b522614162c07601d0d'O, '6a91970e838fd079'O, 'f11b89a2a8be00001f9c526f3d75d44c'O, '95AFAD9A0D29AFAA079A9451DF7161D7EE4CBF2AF9387F766D058BB6B44B905D'O) };
|
|
|
|
DIAMETER.send(ts_DIA_AIA(rx_dia.hop_by_hop_id, rx_dia.end_to_end_id,
|
|
sess_id, auth_info_content));
|
|
}
|
|
}
|
|
|
|
/* Expect UpdateLocationReq (ULR); respond with UpdateLocationAnswer (ULA) */
|
|
private altstep as_DIA_UpdLoc() runs on ConnHdlr {
|
|
var PDU_DIAMETER rx_dia;
|
|
[] DIAMETER.receive(tr_DIA_ULR(g_pars.ue_pars.imsi)) -> value rx_dia {
|
|
var template (omit) AVP avp;
|
|
var octetstring sess_id;
|
|
var hexstring imsi;
|
|
var template (value) AVP_list sub_data;
|
|
|
|
/* retrieve input data */
|
|
imsi := valueof(f_DIAMETER_get_imsi(rx_dia));
|
|
avp := f_DIAMETER_get_avp(rx_dia, c_AVP_Code_BASE_NONE_Session_Id);
|
|
sess_id := valueof(avp.avp_data.avp_BASE_NONE_Session_Id);
|
|
|
|
sub_data := {
|
|
ts_AVP_3GPP_SubscriberStatus(SERVICE_GRANTED),
|
|
ts_AVP_3GPP_SubscrRauTauTmr(30),
|
|
ts_AVP_3GPP_AMBR(1000, 2000),
|
|
ts_AVP_3GPP_ApnConfigProfile({
|
|
ts_AVP_3GPP_ContextId(1),
|
|
ts_AVP_3GPP_AllApnConfigsIncl,
|
|
ts_AVP_3GPP_ApnConfig(1, IPv4, "*")
|
|
})
|
|
};
|
|
|
|
DIAMETER.send(ts_DIA_ULA(rx_dia.hop_by_hop_id, rx_dia.end_to_end_id, sess_id, sub_data));
|
|
}
|
|
}
|
|
|
|
private function f_TC_attach(ConnHdlrPars pars) runs on ConnHdlr {
|
|
|
|
f_init_handler(pars);
|
|
var template (value) EPS_MobileIdentityV mi := ts_NAS_MobileId_IMSI(pars.ue_pars.imsi);
|
|
var template (value) PDU_NAS_EPS nas_esm, nas_emm;
|
|
/*
|
|
nas_esm := ts_NAS_ActDefEpsBearCtxReq(bearer_id := '0000'B, proc_tid := int2bit(1,8),
|
|
qos := c_NAS_defaultQoS, apn := c_NAS_defaultAPN,
|
|
addr_type := '000'B, addr_info := ''O);
|
|
*/
|
|
nas_esm := ts_NAS_PdnConnReq(bearer_id := '0000'B, proc_tid := int2bit(1,8),
|
|
pdn_type := NAS_PDN_T_IPv4, req_type := '001'B);
|
|
nas_emm := ts_NAS_AttachRequest(att_type := '000'B, kset_id := '000'B, mobile_id := mi,
|
|
ue_net_cap := c_NAS_defaultUeNetCap,
|
|
esm_enc := enc_PDU_NAS_EPS(valueof(nas_esm)));
|
|
var template (value) S1AP_PDU tx;
|
|
tx := ts_S1AP_InitialUE(p_eNB_value := 0, p_nasPdu := enc_PDU_NAS_EPS(valueof(nas_emm)),
|
|
p_tAI := ts_enb_S1AP_TAI(g_pars.enb_pars[g_pars.mme_idx]),
|
|
p_eUTRAN_CGI := ts_enb_S1AP_CGI(g_pars.enb_pars[g_pars.mme_idx]),
|
|
p_rrcCause := mo_Signalling);
|
|
S1AP.send(tx);
|
|
|
|
as_DIA_AuthInfo();
|
|
as_s1ap_handle_auth();
|
|
alt {
|
|
[] as_DIA_UpdLoc() {
|
|
as_s1ap_handle_sec_mode();
|
|
}
|
|
[] as_s1ap_handle_sec_mode() {
|
|
as_DIA_UpdLoc();
|
|
}
|
|
}
|
|
|
|
f_sleep(10.0);
|
|
}
|
|
testcase TC_s1ap_attach() runs on MTC_CT {
|
|
var charstring id := testcasename();
|
|
|
|
f_init_diameter(id);
|
|
f_sleep(10.0);
|
|
f_init_s1ap(id, 4);
|
|
f_s1ap_setup(0);
|
|
|
|
var ConnHdlrPars pars := f_init_pars(ue_idx := 0);
|
|
var ConnHdlr vc_conn;
|
|
vc_conn := f_start_handler_with_pars(refers(f_TC_attach), pars);
|
|
vc_conn.done;
|
|
}
|
|
|
|
control {
|
|
execute( TC_s1ap_setup_wrong_plmn() );
|
|
execute( TC_s1ap_setup_wrong_tac() );
|
|
execute( TC_s1ap_setup() );
|
|
execute( TC_s1ap_attach() );
|
|
}
|
|
|
|
|
|
}
|