Change in ...osmo-ttcn3-hacks[master]: hlr: add create-subscriber-on-demand tests

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osmith gerrit-no-reply at lists.osmocom.org
Wed Jun 12 07:46:49 UTC 2019 

osmith has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/14424


Change subject: hlr: add create-subscriber-on-demand tests
......................................................................

hlr: add create-subscriber-on-demand tests

Test all possible code paths where a subscriber on demand can be
created:
* Check IMEI early
* Location Update
* Send Auth Info

I have noticed that the HLR does not yet abort a location update if a
subscriber was created without a MSISDN. This patch assumes, that the
HLR returns a "GPRS services and non GRPS services not allowed" error in
that case, and a suitable patch for osmo-hlr.git is in [1].

[1] Change-Id: If1b2f3c9ddfba55bd02510f2dfd481bca2602e3a

Related: OS#2542
Change-Id: Id544fa906ad442c2bbbccff437c18d04ddccde2e
---
M hlr/HLR_Tests.ttcn
M hlr/osmo-hlr.cfg
2 files changed, 133 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/24/14424/1

diff --git a/hlr/HLR_Tests.ttcn b/hlr/HLR_Tests.ttcn
index 4c158fd..d4f861c 100644
--- a/hlr/HLR_Tests.ttcn
+++ b/hlr/HLR_Tests.ttcn
@@ -407,7 +407,8 @@
 }
 
 function f_perform_UL(hexstring imsi, template hexstring msisdn,
-			template (omit) integer exp_err_cause := omit)
+			template (omit) integer exp_err_cause := omit,
+			boolean isd_match_msisdn := true)
 runs on HLR_ConnHdlr return GSUP_PDU {
 	var GSUP_PDU ret;
 	timer T := 3.0;
@@ -440,6 +441,11 @@
 		isd_done := true;
 		repeat;
 		}
+	[not exp_fail and not isd_done and not isd_match_msisdn] GSUP.receive(tr_GSUP_ISD_REQ(imsi, ?)) -> value ret {
+		GSUP.send(ts_GSUP_ISD_RES(imsi));
+		isd_done := true;
+		repeat;
+		}
 	[not exp_fail and isd_done] GSUP.receive(tr_GSUP_UL_RES(imsi)) -> value ret {
 		setverdict(pass);
 		}
@@ -1196,6 +1202,118 @@
 	vc_conn.done;
 }
 
+/* Test create-subscriber-on-demand during Check IMEI (OsmoMSC would be set to "check-imei-rqd early") */
+private function f_TC_subscr_create_on_demand_check_imei_early() runs on HLR_ConnHdlr {
+	var GSUP_PDU res; /* save various return values to prevent ttcn3 compiler warnings */
+	var charstring imsi_pattern := "*IMSI: " & hex2str(g_pars.sub.imsi) & "*";
+
+	/* Random MSISDN and CS+PS NAM (UL must pass) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand 3 cs+ps");
+	f_perform_CHECK_IMEI(g_pars.sub.imsi, '12345678901234'H, result := OSMO_GSUP_IMEI_RESULT_ACK);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, isd_match_msisdn := false);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* Random MSISDN and no NAM (UL must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand 3 none");
+	f_perform_CHECK_IMEI(g_pars.sub.imsi, '12345678901234'H, result := OSMO_GSUP_IMEI_RESULT_ACK);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 7 /* GPRS services not allowed */);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* No MSISDN and no NAM (UL must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand no-msisdn none");
+	f_perform_CHECK_IMEI(g_pars.sub.imsi, '12345678901234'H, result := OSMO_GSUP_IMEI_RESULT_ACK);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 7 /* GPRS services not allowed */);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* No MSISDN and CS+PS NAM (UL must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand no-msisdn cs+ps");
+	f_perform_CHECK_IMEI(g_pars.sub.imsi, '12345678901234'H, result := OSMO_GSUP_IMEI_RESULT_ACK);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 8 /* GPRS services + non GPRS services not allowed */);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	setverdict(pass);
+}
+testcase TC_subscr_create_on_demand_check_imei_early() runs on test_CT {
+	var hexstring imsi := f_rnd_imsi('26242'H);
+	var HLR_ConnHdlrPars pars := valueof(t_Pars(imsi));
+	var HLR_ConnHdlr vc_conn;
+
+	f_init(false);
+	vc_conn := f_start_handler(refers(f_TC_gsup_check_imei_unknown_imsi), pars);
+	vc_conn.done;
+}
+
+/* Test create-subscriber-on-demand during LU (Location Update) */
+private function f_TC_subscr_create_on_demand_ul() runs on HLR_ConnHdlr {
+	var GSUP_PDU res;
+	var charstring imsi_pattern := "*IMSI: " & hex2str(g_pars.sub.imsi) & "*";
+
+	/* Create with random 3 digit MSISDN and CS+PS NAM (LU must pass) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand 3 cs+ps");
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, isd_match_msisdn := false);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* Create without CS or PS NAM (LU must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand 3 none");
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 7 /* GPRS services not allowed */);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* Create without CS or PS NAM and without MSISDN (LU must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand no-msisdn none");
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 7 /* GPRS services not allowed */);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	/* Create with CS+PS NAM and without MSISDN (LU must fail) */
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand no-msisdn cs+ps");
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, 8 /* GPRS services + non GPRS services not allowed */);
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern);
+	f_vty_subscr_delete(VTY, g_pars.sub);
+
+	setverdict(pass);
+}
+testcase TC_subscr_create_on_demand_ul() runs on test_CT {
+	var hexstring imsi := f_rnd_imsi('26242'H);
+	var HLR_ConnHdlrPars pars := valueof(t_Pars(imsi));
+	var HLR_ConnHdlr vc_conn;
+
+	f_init(false);
+	vc_conn := f_start_handler(refers(f_TC_subscr_create_on_demand_ul), pars);
+	vc_conn.done;
+}
+
+/* Test create-subscriber-on-demand during SAI (SendAuthInfo) */
+private function f_TC_subscr_create_on_demand_sai() runs on HLR_ConnHdlr {
+	var GSUP_PDU res;
+	var charstring imsi_pattern := "*IMSI: " & hex2str(g_pars.sub.imsi) & "*";
+
+	f_vty_config(VTY, "hlr", "subscriber-create-on-demand 3 cs+ps");
+
+	/* HLR creates the subscriber on demand. Then the IMSI is known, but there is no auth data, so the HLR returns
+         * the "slightly inaccurate cause 'IMSI Unknown' via GSUP". The MS is able to do a LU afterwards. */
+	res := f_perform_SAI(g_pars.sub.imsi, 2 /* IMSI Unknown */ );
+	f_vty_subscr_show(VTY, g_pars.sub, pattern imsi_pattern); /* verify that it was created before the LU */
+	res := f_perform_UL(g_pars.sub.imsi, g_pars.sub.msisdn, isd_match_msisdn := false);
+
+	f_vty_subscr_delete(VTY, g_pars.sub);
+	setverdict(pass);
+}
+testcase TC_subscr_create_on_demand_sai() runs on test_CT {
+	var hexstring imsi := f_rnd_imsi('26242'H);
+	var HLR_ConnHdlrPars pars := valueof(t_Pars(imsi));
+	var HLR_ConnHdlr vc_conn;
+
+	f_init(false);
+	vc_conn := f_start_handler(refers(f_TC_subscr_create_on_demand_sai), pars);
+	vc_conn.done;
+}
+
 /* TODO:
   * UL with ISD error
   * UL with ISD timeout
@@ -1236,6 +1354,9 @@
 	execute( TC_gsup_check_imei() );
 	execute( TC_gsup_check_imei_invalid_len() );
 	execute( TC_gsup_check_imei_unknown_imsi() );
+	execute( TC_subscr_create_on_demand_check_imei_early() );
+	execute( TC_subscr_create_on_demand_ul() );
+	execute( TC_subscr_create_on_demand_sai() );
 };
 
 };
diff --git a/hlr/osmo-hlr.cfg b/hlr/osmo-hlr.cfg
index a17881e..71859c9 100644
--- a/hlr/osmo-hlr.cfg
+++ b/hlr/osmo-hlr.cfg
@@ -21,3 +21,14 @@
  ussd route prefix *#100 internal own-msisdn
  ussd route prefix *#101 internal own-imsi
  ussd route prefix *100 external foobar
+
+log gsmtap 127.0.0.1
+ logging filter all 1
+ logging color 1
+ logging print level 1
+ logging print category 1
+ logging print category-hex 0
+ logging print file basename last
+ logging print extended-timestamp 1
+ logging level set-all debug
+

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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: Id544fa906ad442c2bbbccff437c18d04ddccde2e
Gerrit-Change-Number: 14424
Gerrit-PatchSet: 1
Gerrit-Owner: osmith <osmith at sysmocom.de>
Gerrit-MessageType: newchange
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