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osmo-ttcn3-hacks
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bsc: add tests for inter-BSC HO with encryption A5/{0,1,3,4} 

Only ho-into-this-bsc tests are required, since the out-of-this-bsc
message (Handover Required) does not involve any encryption information.

Related: SYS#5324
Change-Id: I8de65eb9a5bd9a58add55e821f2a559c9a81edc1
This commit is contained in:
Neels Hofmeyr 2021-06-21 05:24:01 +02:00 committed by laforge
parent 1d8decea8b
commit 8ebf19cfdf
1 changed files with 58 additions and 4 deletions
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62
bsc/BSC_Tests.ttcn
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@ -1507,15 +1507,38 @@ function f_gen_ass_req(boolean osmux_enabled := false, integer bssap_idx := 0, c
}
function f_gen_handover_req(integer bssap_idx := 0, charstring aoip_tla := "1.2.3.4",
template (omit) BSSMAP_oldToNewBSSIEs oldToNewBSSIEs := omit) return PDU_BSSAP {
template (omit) BSSMAP_oldToNewBSSIEs oldToNewBSSIEs := omit,
template (omit) TestHdlrEncrParams enc := omit) return PDU_BSSAP {
var PDU_BSSAP ho_req;
var BSSMAP_IE_EncryptionInformation encryptionInformation :=
valueof(ts_BSSMAP_IE_EncrInfo('0000000000000000'O,'01'O));
var template BSSMAP_IE_ChosenEncryptionAlgorithm chosenEncryptionAlgorithm := omit;
var template BSSMAP_IE_KC128 kc128 := omit;
if (ispresent(enc)) {
var TestHdlrEncrParams v_enc := valueof(enc);
encryptionInformation := valueof(ts_BSSMAP_IE_EncrInfo(v_enc.enc_key, v_enc.enc_alg));
chosenEncryptionAlgorithm := valueof(
ts_BSSMAP_IE_ChosenEncryptionAlgorithm(int2oct(enum2int(
f_chipher_mode_bssmap_to_rsl(v_enc.enc_alg)), 1)));
if (ispresent(v_enc.enc_kc128)) {
kc128 := ts_BSSMAP_IE_Kc128(v_enc.enc_kc128);
}
}
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
var BSSMAP_IE_AoIP_TransportLayerAddress tla :=
valueof(f_ts_BSSMAP_IE_AoIP_TLA(aoip_tla, 2342));
ho_req := valueof(ts_BSSMAP_HandoverRequest(omit, tla, oldToNewBSSIEs := oldToNewBSSIEs));
ho_req := valueof(ts_BSSMAP_HandoverRequest(omit, tla, oldToNewBSSIEs := oldToNewBSSIEs,
encryptionInformation := encryptionInformation,
chosenEncryptionAlgorithm := chosenEncryptionAlgorithm,
kC128 := kc128));
} else {
var BSSMAP_IE_CircuitIdentityCode cic := valueof(ts_BSSMAP_IE_CIC(0,1));
ho_req := valueof(ts_BSSMAP_HandoverRequest(cic, omit, oldToNewBSSIEs := oldToNewBSSIEs));
ho_req := valueof(ts_BSSMAP_HandoverRequest(cic, omit, oldToNewBSSIEs := oldToNewBSSIEs,
encryptionInformation := encryptionInformation,
chosenEncryptionAlgorithm := chosenEncryptionAlgorithm,
kC128 := kc128));
}
return ho_req;
}
@ -5285,7 +5308,8 @@ private function f_ho_into_this_bsc(charstring id, template (omit) BSSMAP_oldToN
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req(aoip_tla := g_pars.host_aoip_tla,
oldToNewBSSIEs := oldToNewBSSIEs)));
oldToNewBSSIEs := oldToNewBSSIEs,
enc := g_pars.encr)));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
@ -5295,6 +5319,9 @@ private function f_ho_into_this_bsc(charstring id, template (omit) BSSMAP_oldToN
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
/* we're sure that the channel activation is done now, verify the encryption parameters in it */
f_verify_encr_info(f_rslem_get_last_act(RSL_PROC, 0, g_chan_nr));
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
@ -5375,6 +5402,29 @@ testcase TC_ho_into_this_bsc() runs on test_CT {
f_shutdown_helper();
}
function f_tc_ho_into_this_bsc_a5(OCT1 encr_alg) runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams(encr_alg, f_rnd_octstring(8), f_rnd_octstring(16)));
f_tc_ho_into_this_bsc_main(pars);
f_shutdown_helper();
}
testcase TC_ho_into_this_bsc_a5_0() runs on test_CT {
f_tc_ho_into_this_bsc_a5('01'O);
}
testcase TC_ho_into_this_bsc_a5_1() runs on test_CT {
f_tc_ho_into_this_bsc_a5('02'O);
}
testcase TC_ho_into_this_bsc_a5_3() runs on test_CT {
f_tc_ho_into_this_bsc_a5('08'O);
}
testcase TC_ho_into_this_bsc_a5_4() runs on test_CT {
f_tc_ho_into_this_bsc_a5('10'O);
}
testcase TC_ho_into_this_bsc_tla_v6() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.host_aoip_tla := "::6";
@ -9117,6 +9167,10 @@ control {
execute( TC_ho_out_fail_no_result_after_ho_cmd() );
execute( TC_ho_into_this_bsc() );
execute( TC_ho_into_this_bsc_a5_0() );
execute( TC_ho_into_this_bsc_a5_1() );
execute( TC_ho_into_this_bsc_a5_3() );
execute( TC_ho_into_this_bsc_a5_4() );
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
execute( TC_ho_into_this_bsc_tla_v6() );
}