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-rw-r--r--sgsn/SGSN_Tests.ttcn104
1 files changed, 93 insertions, 11 deletions
diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn
index 79aa166..912a507 100644
--- a/sgsn/SGSN_Tests.ttcn
+++ b/sgsn/SGSN_Tests.ttcn
@@ -35,6 +35,8 @@ import from Osmocom_VTY_Functions all;
import from GSM_RR_Types all;
+import from MobileL3_MM_Types all;
+
modulepar {
/* IP/port on which we run our internal GSUP/HLR emulation */
@@ -286,23 +288,65 @@ altstep as_mm_identity() runs on BSSGP_ConnHdlr {
}
}
-/* perform GMM authentication (if expected) */
-function f_gmm_auth () runs on BSSGP_ConnHdlr {
+/* perform GMM authentication (if expected).
+ * Note, for umts_aka_challenge to work, the revisionLevelIndicatior needs to
+ * be 1 to mark R99 capability, in the GMM Attach Request, see f_gmm_attach(). */
+function f_gmm_auth (boolean umts_aka_challenge := false, boolean force_gsm_sres := false) runs on BSSGP_ConnHdlr {
var BssgpDecoded bd;
var PDU_L3_MS_SGSN l3_mo;
var PDU_L3_SGSN_MS l3_mt;
var default di := activate(as_mm_identity());
if (g_pars.net.expect_auth) {
- g_pars.vec := f_gen_auth_vec_2g();
- var GSUP_IE auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G(g_pars.vec.rand,
- g_pars.vec.sres,
- g_pars.vec.kc));
+ var GSUP_IE auth_tuple;
+ var template AuthenticationParameterAUTNTLV autn;
+
+ if (umts_aka_challenge) {
+ g_pars.vec := f_gen_auth_vec_3g();
+ autn := {
+ elementIdentifier := '28'O,
+ lengthIndicator := lengthof(g_pars.vec.autn),
+ autnValue := g_pars.vec.autn
+ };
+
+ auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G3G(g_pars.vec.rand,
+ g_pars.vec.sres,
+ g_pars.vec.kc,
+ g_pars.vec.ik,
+ g_pars.vec.ck,
+ g_pars.vec.autn,
+ g_pars.vec.res));
+ log("GSUP sends 2G and 3G auth tuples", auth_tuple);
+ } else {
+ g_pars.vec := f_gen_auth_vec_2g();
+ autn := omit;
+ auth_tuple := valueof(ts_GSUP_IE_AuthTuple2G(g_pars.vec.rand,
+ g_pars.vec.sres,
+ g_pars.vec.kc));
+ log("GSUP sends only 2G auth tuple", auth_tuple);
+ }
GSUP.receive(tr_GSUP_SAI_REQ(g_pars.imsi));
GSUP.send(ts_GSUP_SAI_RES(g_pars.imsi, auth_tuple));
- BSSGP.receive(tr_BD_L3_MT(tr_GMM_AUTH_REQ(g_pars.vec.rand))) -> value bd;
+
+ var template PDU_L3_SGSN_MS auth_ciph_req := tr_GMM_AUTH_REQ(g_pars.vec.rand);
+ auth_ciph_req.msgs.gprs_mm.authenticationAndCipheringRequest.authenticationParameterAUTN := autn;
+ BSSGP.receive(tr_BD_L3_MT(auth_ciph_req)) -> value bd;
l3_mt := bd.l3_mt;
var BIT4 ac_ref := l3_mt.msgs.gprs_mm.authenticationAndCipheringRequest.acReferenceNumber.valueField;
- l3_mo := valueof(ts_GMM_AUTH_RESP_2G(ac_ref, g_pars.vec.sres));
+ var template PDU_L3_MS_SGSN auth_ciph_resp := ts_GMM_AUTH_RESP_2G(ac_ref, g_pars.vec.sres);
+
+ if (umts_aka_challenge and not force_gsm_sres) {
+ /* set UMTS response instead */
+ auth_ciph_resp.msgs.gprs_mm.authenticationAndCipheringResponse.authenticationParResp := {
+ valueField := substr(g_pars.vec.res, 0, 4)
+ };
+ auth_ciph_resp.msgs.gprs_mm.authenticationAndCipheringResponse.authenticationRespParExt := {
+ elementIdentifier := '21'O,
+ lengthIndicator := lengthof(g_pars.vec.res) - 4,
+ valueField := substr(g_pars.vec.res, 4, lengthof(g_pars.vec.res) - 4)
+ };
+ }
+
+ l3_mo := valueof(auth_ciph_resp);
if (ispresent(l3_mt.msgs.gprs_mm.authenticationAndCipheringRequest.imeisvRequest) and
l3_mt.msgs.gprs_mm.authenticationAndCipheringRequest.imeisvRequest.valueField == '001'B) {
l3_mo.msgs.gprs_mm.authenticationAndCipheringResponse.imeisv :=
@@ -402,12 +446,20 @@ private function f_gmm_gsup_lu_isd() runs on BSSGP_ConnHdlr {
GSUP.send(ts_GSUP_UL_RES(g_pars.imsi));
}
-private function f_TC_attach(charstring id) runs on BSSGP_ConnHdlr {
+private function f_gmm_attach(boolean umts_aka_challenge, boolean force_gsm_sres) runs on BSSGP_ConnHdlr {
var BssgpDecoded bd;
var RoutingAreaIdentificationV old_ra := f_random_RAI();
+ var template PDU_L3_MS_SGSN attach_req := ts_GMM_ATTACH_REQ(f_mi_get_lv(), old_ra, false, false, omit, omit);
- BSSGP.send(ts_GMM_ATTACH_REQ(f_mi_get_lv(), old_ra, false, false, omit, omit));
- f_gmm_auth();
+ /* indicate R99 capability of the MS to enable UMTS AKA in presence of
+ * 3G auth vectors */
+ attach_req.msgs.gprs_mm.attachRequest.msNetworkCapability.msNetworkCapabilityV.revisionLevelIndicatior := '1'B;
+ /* The thing is, if the solSACapability is 'omit', then the
+ * revisionLevelIndicatior is at the wrong place! */
+ attach_req.msgs.gprs_mm.attachRequest.msNetworkCapability.msNetworkCapabilityV.solSACapability := '0'B;
+
+ BSSGP.send(attach_req);
+ f_gmm_auth(umts_aka_challenge, force_gsm_sres);
/* Expect MSC to perform LU with HLR */
f_gmm_gsup_lu_isd();
@@ -416,6 +468,10 @@ private function f_TC_attach(charstring id) runs on BSSGP_ConnHdlr {
}
/* FIXME: Extract P-TMSI, if any. Only send Complete if necessary */
BSSGP.send(ts_GMM_ATTACH_COMPL);
+}
+
+private function f_TC_attach(charstring id) runs on BSSGP_ConnHdlr {
+ f_gmm_attach(false, false);
setverdict(pass);
}
@@ -435,6 +491,30 @@ testcase TC_attach_mnc3() runs on test_CT {
vc_conn.done;
}
+private function f_TC_attach_umts_aka_umts_res(charstring id) runs on BSSGP_ConnHdlr {
+ f_gmm_attach(true, false);
+ setverdict(pass);
+}
+testcase TC_attach_umts_aka_umts_res() runs on test_CT {
+ var BSSGP_ConnHdlr vc_conn;
+ f_init();
+ f_sleep(1.0);
+ vc_conn := f_start_handler(refers(f_TC_attach_umts_aka_umts_res), testcasename(), g_gb[0], 1002);
+ vc_conn.done;
+}
+
+private function f_TC_attach_umts_aka_gsm_sres(charstring id) runs on BSSGP_ConnHdlr {
+ f_gmm_attach(true, true);
+ setverdict(pass);
+}
+testcase TC_attach_umts_aka_gsm_sres() runs on test_CT {
+ var BSSGP_ConnHdlr vc_conn;
+ f_init();
+ f_sleep(1.0);
+ vc_conn := f_start_handler(refers(f_TC_attach_umts_aka_gsm_sres), testcasename(), g_gb[0], 1003);
+ vc_conn.done;
+}
+
/* MS never responds to ID REQ, expect ATTACH REJECT */
private function f_TC_attach_auth_id_timeout(charstring id) runs on BSSGP_ConnHdlr {
var RoutingAreaIdentificationV old_ra := f_random_RAI();
@@ -1153,6 +1233,8 @@ testcase TC_attach_pdp_act_user_deact_mt() runs on test_CT {
control {
execute( TC_attach() );
execute( TC_attach_mnc3() );
+ execute( TC_attach_umts_aka_umts_res() );
+ execute( TC_attach_umts_aka_gsm_sres() );
execute( TC_attach_auth_id_timeout() );
execute( TC_attach_auth_sai_timeout() );
execute( TC_attach_auth_sai_reject() );