tests: add msc_vlr_test_authen_reuse

Change-Id: I185a2cbff6241a27722f1c37ae609f0fcc59a71e

1 files changed, 337 insertions, 0 deletions

diff --git a/tests/msc_vlr/msc_vlr_test_authen_reuse.c b/tests/msc_vlr/msc_vlr_test_authen_reuse.c
new file mode 100644
index 000000000..103c90489
--- /dev/null
+++ b/tests/msc_vlr/msc_vlr_test_authen_reuse.c
@@ -0,0 +1,337 @@
+/* Osmocom MSC+VLR end-to-end tests */
+
+/* (C) 2017 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
+ *
+ * All Rights Reserved
+ *
+ * Author: Neels Hofmeyr <nhofmeyr@sysmocom.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/* NOTE that further auth re-use tests exist in msc_vlr_test_hlr_reject.c */
+
+#include "msc_vlr_tests.h"
+
+#define ASSERT_RELEASE_CLEAR(via_ran) \
+	switch (via_ran) { \
+	case RAN_GERAN_A: \
+		VERBOSE_ASSERT(bssap_clear_sent, == true, "%d"); \
+		break; \
+	case RAN_UTRAN_IU: \
+		VERBOSE_ASSERT(iu_release_sent, == true, "%d"); \
+		break; \
+	default: \
+		OSMO_ASSERT(false); \
+		break; \
+	}
+
+void _test_auth_reuse(enum ran_type via_ran,
+		      int set_max_reuse_count,
+		      int loop_requests_without_hlr,
+		      bool final_request_with_hlr)
+{
+	struct vlr_subscr *vsub;
+	const char *imsi = "901700000010650";
+	int expected_use_count;
+	int i;
+
+	net->authentication_required = true;
+	net->vlr->cfg.assign_tmsi = true;
+	net->vlr->cfg.auth_tuple_max_reuse_count = set_max_reuse_count;
+	net->vlr->cfg.auth_reuse_old_sets_on_error = false;
+	rx_from_ran = via_ran;
+
+	btw("Location Update request causes a GSUP Send Auth Info request to HLR");
+	lu_result_sent = RES_NONE;
+	gsup_expect_tx("080108" "09710000000156f0");
+	ms_sends_msg("0508" /* MM LU */
+		     "7" /* ciph key seq: no key available */
+		     "0" /* LU type: normal */
+		     "ffffff" "0000" /* LAI, LAC */
+		     "57" /* classmark 1: R99, early classmark, no power lvl */
+		     "089910070000106005" /* IMSI */
+		     "3303575886" /* classmark 2 */
+		     );
+	OSMO_ASSERT(gsup_tx_confirmed);
+	VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+
+	btw("from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS");
+	/* based on auc_3g:
+	 * K = 'EB215756028D60E3275E613320AEC880',
+	 * OPC = 'FB2A3D1B360F599ABAB99DB8669F8308'
+	 * SQN = 0
+	 */
+	auth_request_sent = false;
+	auth_request_expect_rand = "39fa2f4e3d523d8619a73b4f65c3e14d";
+	auth_request_expect_autn = "8704f5ba55f30000d2ee44b22c8ea919";
+	gsup_rx("0a"
+		/* imsi */
+		"0108" "09710000000156f0"
+		/* TL    TL     rand */
+		"0362"  "2010" "39fa2f4e3d523d8619a73b4f65c3e14d"
+		/*       TL     sres       TL     kc */
+			"2104" "9b36efdf" "2208" "059a4f668f6fbe39"
+		/*       TL     3G IK */
+			"2310" "27497388b6cb044648f396aa155b95ef"
+		/*       TL     3G CK */
+			"2410" "f64735036e5871319c679f4742a75ea1"
+		/*       TL     AUTN */
+			"2510" "8704f5ba55f30000d2ee44b22c8ea919"
+		/*       TL     RES */
+			"2708" "e229c19e791f2e41",
+		NULL);
+	VERBOSE_ASSERT(auth_request_sent, == true, "%d");
+	VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+
+	if (via_ran == RAN_GERAN_A) {
+		btw("MS sends Authen Response, VLR accepts and sends GSUP LU Req to HLR");
+		gsup_expect_tx("04010809710000000156f0");
+		ms_sends_msg("0554" "e229c19e" "2104" "791f2e41");
+		VERBOSE_ASSERT(gsup_tx_confirmed, == true, "%d");
+		VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+	} else {
+		/* On UTRAN */
+		btw("MS sends Authen Response, VLR accepts and sends SecurityModeControl");
+		cipher_mode_cmd_sent = false;
+		ms_sends_msg("0554" "e229c19e" "2104" "791f2e41");
+		VERBOSE_ASSERT(cipher_mode_cmd_sent, == true, "%d");
+		VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+
+		btw("MS sends SecurityModeControl acceptance, VLR accepts and sends GSUP LU Req to HLR");
+		gsup_expect_tx("04010809710000000156f0");
+		ms_sends_security_mode_complete();
+		VERBOSE_ASSERT(gsup_tx_confirmed, == true, "%d");
+		VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+	}
+
+	btw("HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT");
+	gsup_rx("10010809710000000156f00804032443f2",
+		"12010809710000000156f0");
+	VERBOSE_ASSERT(lu_result_sent, == RES_NONE, "%d");
+
+	btw("HLR also sends GSUP _UPDATE_LOCATION_RESULT");
+	gsup_rx("06010809710000000156f0", NULL);
+
+	VERBOSE_ASSERT(lu_result_sent, == RES_ACCEPT, "%d");
+
+	btw("a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl");
+	EXPECT_CONN_COUNT(1);
+	EXPECT_ACCEPTED(false);
+	thwart_rx_non_initial_requests();
+
+	btw("even though the TMSI is not acked, we can already find the subscr with it");
+	vsub = vlr_subscr_find_by_tmsi(net->vlr, 0x03020100);
+	VERBOSE_ASSERT(vsub != NULL, == true, "%d");
+	VERBOSE_ASSERT(strcmp(vsub->imsi, imsi), == 0, "%d");
+	VERBOSE_ASSERT(vsub->tmsi_new, == 0x03020100, "0x%08x");
+	VERBOSE_ASSERT(vsub->tmsi, == GSM_RESERVED_TMSI, "0x%08x");
+	vlr_subscr_put(vsub);
+
+	btw("MS sends TMSI Realloc Complete");
+	expect_release_clear(via_ran);
+	ms_sends_msg("055b");
+	ASSERT_RELEASE_CLEAR(via_ran);
+
+	btw("LU was successful, and the conn has already been closed");
+	EXPECT_CONN_COUNT(0);
+
+	expected_use_count = 1;
+
+	for (i = 0; i < loop_requests_without_hlr; i++, expected_use_count++) {
+		BTW("Now the auth tuple has use_count == %d", expected_use_count);
+		vsub = vlr_subscr_find_by_imsi(net->vlr, imsi);
+		OSMO_ASSERT(vsub);
+		OSMO_ASSERT(vsub->last_tuple);
+		VERBOSE_ASSERT(vsub->last_tuple->use_count, == expected_use_count, "%d");
+		vlr_subscr_put(vsub);
+
+		BTW("after a while, a new conn sends a CM Service Request. VLR responds with Auth Req,"
+		    " and reuses old auth vector");
+		auth_request_sent = true;
+		cm_service_result_sent = RES_NONE;
+		ms_sends_msg("052478"
+			     "03575886" /* classmark 2 */
+			     "089910070000106005" /* IMSI */);
+		OSMO_ASSERT(g_conn);
+		OSMO_ASSERT(g_conn->conn_fsm);
+		OSMO_ASSERT(g_conn->vsub);
+		VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+		VERBOSE_ASSERT(auth_request_sent, == true, "%d");
+
+		if (via_ran == RAN_GERAN_A) {
+			btw("MS sends Authen Response, VLR accepts with a CM Service Accept");
+			gsup_expect_tx(NULL);
+			ms_sends_msg("0554" "e229c19e" "2104" "791f2e41");
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_ACCEPT, "%d");
+		} else {
+			/* On UTRAN */
+			btw("MS sends Authen Response, VLR accepts and sends SecurityModeControl");
+			cipher_mode_cmd_sent = false;
+			ms_sends_msg("0554" "e229c19e" "2104" "791f2e41");
+			VERBOSE_ASSERT(cipher_mode_cmd_sent, == true, "%d");
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+
+			btw("MS sends SecurityModeControl acceptance, VLR accepts; above Ciphering is an implicit CM Service Accept");
+			ms_sends_security_mode_complete();
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+		}
+
+		btw("a USSD request is serviced");
+		dtap_expect_tx_ussd("Your extension is 42342\r");
+		expect_release_clear(via_ran);
+		ms_sends_msg("0b3b1c15a11302010002013b300b04010f0406aa510c061b017f0100");
+		OSMO_ASSERT(dtap_tx_confirmed);
+		ASSERT_RELEASE_CLEAR(via_ran);
+
+		btw("all requests serviced, conn has been released");
+		EXPECT_CONN_COUNT(0);
+	}
+
+	if (final_request_with_hlr) {
+		BTW("Now the auth tuple has use_count == %d, as much as is allowed.", expected_use_count);
+		vsub = vlr_subscr_find_by_imsi(net->vlr, imsi);
+		OSMO_ASSERT(vsub);
+		OSMO_ASSERT(vsub->last_tuple);
+		VERBOSE_ASSERT(vsub->last_tuple->use_count, == expected_use_count, "%d");
+		vlr_subscr_put(vsub);
+
+		BTW("after a while, a new conn sends a CM Service Request. VLR responds with Auth Req,"
+		    " and needs to request a second auth vector from HLR");
+		auth_request_sent = false;
+		cm_service_result_sent = RES_NONE;
+		gsup_expect_tx("080108" "09710000000156f0");
+		ms_sends_msg("052478"
+			     "03575886" /* classmark 2 */
+			     "089910070000106005" /* IMSI */);
+		OSMO_ASSERT(g_conn);
+		OSMO_ASSERT(g_conn->conn_fsm);
+		OSMO_ASSERT(g_conn->vsub);
+		VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+		VERBOSE_ASSERT(auth_request_sent, == false, "%d");
+		VERBOSE_ASSERT(gsup_tx_confirmed, == true, "%d");
+
+		btw("from HLR, rx _SEND_AUTH_INFO_RESULT, second tuple; VLR sends Auth Req to MS");
+		auth_request_expect_rand = "c187a53a5e6b9d573cac7c74451fd46d";
+		auth_request_expect_autn = "1843a645b98d00005b2d666af46c45d9";
+		gsup_rx("0a"
+			/* imsi */
+			"0108" "09710000000156f0"
+			/* TL    TL     rand */
+			/*       TL     sres       TL     kc */
+			/*       TL     3G IK */
+			/*       TL     3G CK */
+			/*       TL     AUTN */
+			/*       TL     RES */
+			"0362"  "2010" "c187a53a5e6b9d573cac7c74451fd46d"
+				"2104" "85aa3130" "2208" "d3d50a000bf04f6e"
+				"2310" "1159ec926a50e98c034a6b7d7c9f418d"
+				"2410" "df3a03d9ca5335641efc8e36d76cd20b"
+				"2510" "1843a645b98d00005b2d666af46c45d9"
+				"2708" "7db47cf7f81e4dc7",
+			NULL);
+		VERBOSE_ASSERT(auth_request_sent, == true, "%d");
+		VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+
+		if (via_ran == RAN_GERAN_A) {
+			btw("MS sends Authen Response, VLR accepts with a CM Service Accept");
+			gsup_expect_tx(NULL);
+			ms_sends_msg("0554" "7db47cf7" "2104" "f81e4dc7"); /* 2nd vector's res, s.a. */
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_ACCEPT, "%d");
+		} else {
+			/* On UTRAN */
+			btw("MS sends Authen Response, VLR accepts and sends SecurityModeControl");
+			cipher_mode_cmd_sent = false;
+			ms_sends_msg("0554" "7db47cf7" "2104" "f81e4dc7"); /* 2nd vector's res, s.a. */
+			VERBOSE_ASSERT(cipher_mode_cmd_sent, == true, "%d");
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+
+			btw("MS sends SecurityModeControl acceptance, VLR accepts; above Ciphering is an implicit CM Service Accept");
+			ms_sends_security_mode_complete();
+			VERBOSE_ASSERT(cm_service_result_sent, == RES_NONE, "%d");
+		}
+
+		btw("a USSD request is serviced");
+		dtap_expect_tx_ussd("Your extension is 42342\r");
+		expect_release_clear(via_ran);
+		ms_sends_msg("0b3b1c15a11302010002013b300b04010f0406aa510c061b017f0100");
+		OSMO_ASSERT(dtap_tx_confirmed);
+		ASSERT_RELEASE_CLEAR(via_ran);
+
+		btw("all requests serviced, conn has been released");
+		EXPECT_CONN_COUNT(0);
+	}
+
+	BTW("subscriber detaches");
+	expect_release_clear(via_ran);
+	ms_sends_msg("050130"
+		     "089910070000106005" /* IMSI */);
+	ASSERT_RELEASE_CLEAR(via_ran);
+
+	EXPECT_CONN_COUNT(0);
+	clear_vlr();
+}
+
+void test_auth_use_twice_geran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_GERAN_A, 1, 1, true);
+	comment_end();
+}
+
+void test_auth_use_twice_utran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_UTRAN_IU, 1, 1, true);
+	comment_end();
+}
+
+void test_auth_use_infinitely_geran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_GERAN_A, -1, 3, false);
+	comment_end();
+}
+
+void test_auth_use_infinitely_utran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_UTRAN_IU, -1, 3, false);
+	comment_end();
+}
+
+void test_no_auth_reuse_geran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_GERAN_A, 0, 0, true);
+	comment_end();
+}
+
+void test_no_auth_reuse_utran()
+{
+	comment_start();
+	_test_auth_reuse(RAN_UTRAN_IU, 0, 0, true);
+	comment_end();
+}
+
+msc_vlr_test_func_t msc_vlr_tests[] = {
+	test_auth_use_twice_geran,
+	test_auth_use_twice_utran,
+	test_auth_use_infinitely_geran,
+	test_auth_use_infinitely_utran,
+	test_no_auth_reuse_geran,
+	test_no_auth_reuse_utran,
+	NULL
+};