ttcn3
/
osmo-ttcn3-hacks
mirror of https://gerrit.osmocom.org/osmo-ttcn3-hacks
10
0
Fork 1
Code Issues Releases Wiki Activity

add MSC test for an invalid CIPHER MODE COMPLETE command 

Add new test TC_cipher_complete_with_invalid_cipher which verifies
that the MSC will reject a CIPHER MODE COMPLETE command with a
cipher which wasn't part of the preceding CIPHER MODE command.

Change-Id: I4492eb7d77371aaa047abae81a2dcf26fe46eb6a
Related: OS#2872
This commit is contained in:
Stefan Sperling 2018-12-17 15:06:20 +01:00 committed by Stefan Sperling
parent 8b9e69f291
commit 89eb1f362f
3 changed files with 61 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
msc/MSC_Tests.cfg
View File

@ -60,3 +60,4 @@ MSC_Tests.control
#MSC_Tests.TC_lu_and_mt_call_no_dlcx_resp
#MSC_Tests.TC_reset_two
#MSC_Tests.TC_lu_and_mt_call
#MSC_Tests.TC_cipher_complete_with_invalid_cipher

59
msc/MSC_Tests.ttcn
View File

@ -2766,6 +2766,63 @@ testcase TC_lu_and_ss_session_timeout() runs on MTC_CT {
f_vty_config(MSCVTY, "msc", "ncss guard-timeout 0");
}
/* A5/1 only permitted on network side; attempt an invalid CIPHER MODE COMPLETE with A5/3 which MSC should reject. */
private function f_tc_cipher_complete_with_invalid_cipher(charstring id, BSC_ConnHdlrPars pars) runs on BSC_ConnHdlr {
pars.net.expect_auth := true;
pars.net.expect_ciph := true;
pars.net.kc_support := '02'O; /* A5/1 only */
f_init_handler(pars);
g_pars.vec := f_gen_auth_vec_2g();
/* Can't use f_perform_lu() directly. Code below is based on it. */
/* tell GSUP dispatcher to send this IMSI to us */
f_create_gsup_expect(hex2str(g_pars.imsi));
/* Send BSSAP_Conn_Req with COMPL L3 INFO to MSC */
var PDU_ML3_MS_NW l3_lu := f_build_lu_imsi(g_pars.imsi)
f_bssap_compl_l3(l3_lu);
f_mm_auth();
var OCT1 a5_net := f_alg_mask_from_cm(g_pars.cm2);
var OCT1 a5_intersect := g_pars.net.kc_support and4b a5_net;
alt {
[] BSSAP.receive(tr_BSSMAP_CipherModeCmd(a5_intersect, g_pars.vec.kc)) {
BSSAP.send(ts_BSSMAP_CipherModeCompl(int2oct(4 /* "accept" A5/3 */, 1)));
}
[] BSSAP.receive(tr_BSSMAP_CipherModeCmd(?, g_pars.vec.kc)) {
setverdict(fail, "Wrong ciphering algorithm mask in CiphModCmd");
mtc.stop;
}
[] BSSAP.receive {
setverdict(fail, "Unknown/unexpected BSSAP received");
mtc.stop;
}
}
/* Expect LU reject from MSC. */
alt {
[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Rej)) {
setverdict(pass);
}
[] BSSAP.receive {
setverdict(fail, "Unknown/unexpected BSSAP received");
mtc.stop;
}
}
}
testcase TC_cipher_complete_with_invalid_cipher() runs on MTC_CT {
var BSC_ConnHdlr vc_conn;
f_init();
f_vty_config(MSCVTY, "network", "encryption a5 1");
vc_conn := f_start_handler(refers(f_tc_cipher_complete_with_invalid_cipher), 52);
vc_conn.done;
}
/* TODO (SMS):
* different user data lengths
* SMPP transaction mode with unsuccessful delivery
@ -2854,6 +2911,8 @@ control {
execute( TC_lu_and_mo_ussd_mo_release() );
execute( TC_lu_and_ss_session_timeout() );
execute( TC_cipher_complete_with_invalid_cipher() );
/* Run this last: at the time of writing this test crashes the MSC */
execute( TC_lu_imsi_auth_tmsi_encr_3_1_log_msc_debug() );
execute( TC_mo_cc_bssmap_clear() );

1
msc/expected-results.xml
View File

@ -69,6 +69,7 @@
<testcase classname='MSC_Tests' name='TC_lu_and_mt_ussd_during_mt_call' time='MASKED'/>
<testcase classname='MSC_Tests' name='TC_lu_and_mo_ussd_mo_release' time='MASKED'/>
<testcase classname='MSC_Tests' name='TC_lu_and_ss_session_timeout' time='MASKED'/>
<testcase classname='MSC_Tests' name='TC_cipher_complete_with_invalid_cipher' time='MASKED'/>
<testcase classname='MSC_Tests' name='TC_lu_imsi_auth_tmsi_encr_3_1_log_msc_debug' time='MASKED'/>
<testcase classname='MSC_Tests' name='TC_mo_cc_bssmap_clear' time='MASKED'/>
</testsuite>