/* Osmocom MSC+VLR end-to-end tests */ /* (C) 2017 by sysmocom s.f.m.c. GmbH * * All Rights Reserved * * Author: Neels Hofmeyr * * 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 . * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "msc_vlr_tests.h" void *msc_vlr_tests_ctx = NULL; void *msgb_ctx = NULL; bool _log_lines = false; struct gsm_network *net = NULL; const char *gsup_tx_expected = NULL; bool gsup_tx_confirmed; struct msgb *dtap_tx_expected = NULL; bool dtap_tx_confirmed; enum result_sent lu_result_sent; enum result_sent cm_service_result_sent; bool auth_request_sent; const char *auth_request_expect_rand; const char *auth_request_expect_autn; bool cipher_mode_cmd_sent; bool cipher_mode_cmd_sent_with_imeisv; const char *cipher_mode_expect_kc; bool security_mode_ctrl_sent; const char *security_mode_expect_ck; const char *security_mode_expect_ik; bool iu_release_expected = false; bool iu_release_sent = false; bool bssap_clear_expected = false; bool bssap_clear_sent = false; bool bssap_assignment_expected = false; bool bssap_assignment_sent = false; bool iu_rab_assignment_expected = false; bool iu_rab_assignment_sent = false; uint32_t cc_to_mncc_tx_expected_msg_type = 0; const char *cc_to_mncc_tx_expected_imsi = NULL; bool cc_to_mncc_tx_confirmed = false; uint32_t cc_to_mncc_tx_got_callref = 0; enum rtp_direction expecting_crcx = -1; bool got_crcx = false; extern int ran_dec_dtap_undup_pdisc_ctr_bin(uint8_t pdisc); /* static state variables for the L3 send sequence numbers */ static uint8_t n_sd[4]; /* patch a correct send sequence number into the given message */ static void patch_l3_seq_nr(struct msgb *msg) { struct gsm48_hdr *gh = msgb_l3(msg); uint8_t pdisc = gsm48_hdr_pdisc(gh); uint8_t *msg_type_oct = &msg->l3h[1]; int bin = ran_dec_dtap_undup_pdisc_ctr_bin(pdisc); if (bin >= 0 && bin < ARRAY_SIZE(n_sd)) { /* patch in n_sd into the msg_type octet */ *msg_type_oct = (*msg_type_oct & 0x3f) | ((n_sd[bin] & 0x3) << 6); //fprintf(stderr, "pdisc=0x%02x bin=%d, patched n_sd=%u\n\n", pdisc, bin, n_sd[bin] & 3); /* increment N(SD) */ n_sd[bin] = (n_sd[bin] + 1) % 4; } else { //fprintf(stderr, "pdisc=0x%02x NO SEQ\n\n", pdisc); } } /* reset L3 sequence numbers (e.g. new RR connection) */ static void reset_l3_seq_nr() { memset(n_sd, 0, sizeof(n_sd)); } struct msgb *msgb_from_hex(const char *label, uint16_t size, const char *hex) { struct msgb *msg = msgb_alloc_headroom(size, 4, label); unsigned char *rc; msg->l2h = msg->data; rc = msgb_put(msg, osmo_hexparse(hex, msg->data, msgb_tailroom(msg))); OSMO_ASSERT(rc == msg->l2h); return msg; } static const char *gh_type_name(struct gsm48_hdr *gh) { return gsm48_pdisc_msgtype_name(gsm48_hdr_pdisc(gh), gsm48_hdr_msg_type(gh)); } void gsup_rx(const char *rx_hex, const char *expect_tx_hex) { int rc; struct msgb *msg; const char *label; gsup_expect_tx(expect_tx_hex); msg = msgb_from_hex("gsup", 1024, rx_hex); label = osmo_gsup_message_type_name(msg->l2h[0]); fprintf(stderr, "<-- GSUP rx %s: %s\n", label, osmo_hexdump_nospc(msgb_l2(msg), msgb_l2len(msg))); /* GSUP read cb takes ownership of msgb */ rc = gsup_client_mux_rx(net->gcm->gsup_client, msg); fprintf(stderr, "<-- GSUP rx %s: vlr_gsupc_read_cb() returns %d\n", label, rc); if (expect_tx_hex) OSMO_ASSERT(gsup_tx_confirmed); } bool conn_exists(const struct msub *msub) { struct msub *i; if (!msub) return false; llist_for_each_entry(i, &msub_list, entry) { if (i == msub) return true; } btw("msub gone"); return false; } /* Simplified version of the cm_service_request_concludes() */ void conn_conclude_cm_service_req(struct msub *msub, const char *cm_service_use) { int32_t count; struct msc_a *msc_a = msub_msc_a(msub); btw("Concluding CM Service Request"); OSMO_ASSERT(conn_exists(msub)); count = osmo_use_count_by(&msc_a->use_count, cm_service_use); OSMO_ASSERT(count > 0); OSMO_ASSERT(osmo_use_count_get_put(&msc_a->use_count, cm_service_use, -count) == 0); ASSERT_RELEASE_CLEAR(msc_a->c.ran->type); } void dummy_msc_i_action(struct osmo_fsm_inst *fi, uint32_t event, void *data) { } static const struct osmo_fsm_state dummy_msc_i_states[] = { { .name = "0", .in_event_mask = 0xffffffff, .action = dummy_msc_i_action, }, }; struct osmo_fsm dummy_msc_i_fsm = { .name = "dummy_msc_i", .states = dummy_msc_i_states, .num_states = ARRAY_SIZE(dummy_msc_i_states), .log_subsys = DMSC, .event_names = msc_i_fsm_event_names, }; struct msc_i *dummy_msc_i_alloc(struct msub *msub, struct ran_infra *ran) { return msub_role_alloc(g_msub, MSC_ROLE_I, &dummy_msc_i_fsm, struct msc_i, ran); } enum osmo_rat_type rx_from_ran = OSMO_RAT_GERAN_A; struct msub *g_msub = NULL; void dtap_expect_tx(const char *hex) { /* Has the previously expected dtap been received? */ OSMO_ASSERT(!dtap_tx_expected); if (!hex) return; dtap_tx_expected = msgb_from_hex("dtap_tx_expected", 1024, hex); /* Mask the sequence number out */ if (msgb_length(dtap_tx_expected) >= 2) dtap_tx_expected->data[1] &= 0x3f; dtap_tx_confirmed = false; } static int _validate_dtap(struct msgb *msg, enum osmo_rat_type to_ran) { struct gsm48_hdr *gh = (void*)msg->data; uint8_t pdisc = gsm48_hdr_pdisc(gh); uint8_t msgt = gsm48_hdr_msg_type(gh); btw("DTAP --%s--> MS: %s: %s", osmo_rat_type_name(to_ran), gh_type_name((void*)msg->data), osmo_hexdump_nospc(msg->data, msg->len)); if (pdisc == GSM48_PDISC_MM && msgt == GSM48_MT_MM_CM_SERV_ACC) { cm_service_result_sent |= RES_ACCEPT; talloc_free(msg); return 0; } if (pdisc == GSM48_PDISC_MM && msgt == GSM48_MT_MM_CM_SERV_REJ) { cm_service_result_sent |= RES_REJECT; talloc_free(msg); return 0; } OSMO_ASSERT(dtap_tx_expected); /* Mask the sequence number out before comparing */ msg->data[1] &= 0x3f; if (!msgb_eq_data_print(msg, dtap_tx_expected->data, dtap_tx_expected->len)) { btw("Expected %s", osmo_hexdump(dtap_tx_expected->data, dtap_tx_expected->len)); abort(); } btw("DTAP matches expected message"); talloc_free(msg); dtap_tx_confirmed = true; talloc_free(dtap_tx_expected); dtap_tx_expected = NULL; return 0; } static void bssap_validate_clear_cmd() { OSMO_ASSERT(bssap_clear_expected); bssap_clear_expected = false; bssap_clear_sent = true; } static void iucs_validate_clear_cmd() { OSMO_ASSERT(iu_release_expected); iu_release_expected = false; iu_release_sent = true; } static int bssap_validate_cipher_mode_cmd(const struct ran_cipher_mode_command *cmd) { int i; const char *got_key; cipher_mode_cmd_sent = true; cipher_mode_cmd_sent_with_imeisv = cmd->geran.retrieve_imeisv; btw("sending Ciphering Mode Command: retrieve_imeisv=%d", cipher_mode_cmd_sent_with_imeisv); for (i = 0; i < 7; i++) { if (!(cmd->geran.a5_encryption_mask & (1 << i))) continue; btw("...perm algo: A5/%d", i); } got_key = osmo_hexdump_nospc(cmd->vec->kc, sizeof(cmd->vec->kc)); btw("...key: %s", got_key); if (!cipher_mode_expect_kc || strcmp(cipher_mode_expect_kc, got_key)) { log("FAILURE: expected kc=%s", cipher_mode_expect_kc ? : "NULL"); OSMO_ASSERT(false); } return 0; } static void bssap_validate_assignment_cmd() { OSMO_ASSERT(bssap_assignment_expected); bssap_assignment_expected = false; bssap_assignment_sent = true; } static void iucs_validate_assignment_cmd() { OSMO_ASSERT(iu_rab_assignment_expected); iu_rab_assignment_expected = false; iu_rab_assignment_sent = true; } static int iucs_validate_security_mode_ctrl(const struct ran_cipher_mode_command *cmd) { const char *got_ik; got_ik = osmo_hexdump_nospc(cmd->vec->ik, sizeof(cmd->vec->ik)); btw("sending SecurityModeControl: ik=%s", got_ik); security_mode_ctrl_sent = true; if (!security_mode_expect_ik || strcmp(security_mode_expect_ik, got_ik)) { log("FAILURE: expected ik=%s", security_mode_expect_ik ? : "NULL"); OSMO_ASSERT(false); } return 0; } struct msgb *dont_ran_encode(struct osmo_fsm_inst *caller_fi, const struct ran_msg *ran_enc_msg) { struct msc_role_common *c = caller_fi->priv; enum osmo_rat_type ran_type = c->ran->type; const char *ran_name = osmo_rat_type_name(ran_type); LOG_RAN_ENC(caller_fi, DMSC, LOGL_INFO, "%s on %s\n", ran_msg_type_name(ran_enc_msg->msg_type), ran_name); switch (ran_enc_msg->msg_type) { case RAN_MSG_DTAP: _validate_dtap(ran_enc_msg->dtap, ran_type); break; case RAN_MSG_CLEAR_COMMAND: switch (ran_type) { case OSMO_RAT_GERAN_A: bssap_validate_clear_cmd(); break; case OSMO_RAT_UTRAN_IU: iucs_validate_clear_cmd(); break; default: OSMO_ASSERT(false); } break; case RAN_MSG_CIPHER_MODE_COMMAND: switch (ran_type) { case OSMO_RAT_GERAN_A: bssap_validate_cipher_mode_cmd(&ran_enc_msg->cipher_mode_command); break; case OSMO_RAT_UTRAN_IU: iucs_validate_security_mode_ctrl(&ran_enc_msg->cipher_mode_command); break; default: OSMO_ASSERT(false); } break; case RAN_MSG_ASSIGNMENT_COMMAND: switch (ran_type) { case OSMO_RAT_GERAN_A: bssap_validate_assignment_cmd(); break; case OSMO_RAT_UTRAN_IU: iucs_validate_assignment_cmd(); break; default: OSMO_ASSERT(false); } break; default: break; } /* We're testing MSC and VLR interaction, not message encoding. * Return whatever. The test msc_i instance is a dummy and drops these. * But it must be msg_free()-able. */ return msgb_alloc(1, "unused dummy msg"); } struct ran_infra test_ran_infra[] = { [OSMO_RAT_GERAN_A] = { .type = OSMO_RAT_GERAN_A, .an_proto = OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_48006, .log_subsys = DBSSAP, .tdefs = msc_tdefs_geran, .ran_encode = dont_ran_encode, }, [OSMO_RAT_UTRAN_IU] = { .type = OSMO_RAT_UTRAN_IU, .an_proto = OSMO_GSUP_ACCESS_NETWORK_PROTOCOL_TS3G_25413, .log_subsys = DIUCS, .tdefs = msc_tdefs_utran, .ran_encode = dont_ran_encode, }, }; static int fake_msc_a_ran_dec(const struct ran_msg *ran_dec_msg) { struct msc_a_ran_dec_data d = { .from_role = MSC_ROLE_I, }; return msc_a_ran_decode_cb(g_msub->role[MSC_ROLE_A], &d, ran_dec_msg); } void rx_from_ms(struct msgb *msg) { struct gsm48_hdr *gh = msgb_l3(msg); struct ran_msg ran_dec_msg; struct gsm0808_cell_id cell_id = { .id_discr = CELL_IDENT_LAI_AND_LAC, .id.lai_and_lac = { .plmn = { .mcc = 1, .mnc = 2, }, .lac = 23, }, }; struct msc_a *msc_a; log("MSC <--%s-- MS: %s", osmo_rat_type_name(rx_from_ran), gh_type_name(gh)); if (!conn_exists(g_msub)) g_msub = NULL; if (!g_msub) { log("new conn"); g_msub = msub_alloc(net); msc_a_alloc(g_msub, &test_ran_infra[rx_from_ran]); dummy_msc_i_alloc(g_msub, &test_ran_infra[rx_from_ran]); reset_l3_seq_nr(); ran_dec_msg = (struct ran_msg){ .msg_type = RAN_MSG_COMPL_L3, .compl_l3 = { .cell_id = &cell_id, .msg = msg, }, }; } else { ran_dec_msg = (struct ran_msg){ .msg_type = RAN_MSG_DTAP, .dtap = msg, }; } msc_a = msub_msc_a(g_msub); msc_a_get(msc_a, __func__); patch_l3_seq_nr(msg); fake_msc_a_ran_dec(&ran_dec_msg); msc_a_put(msc_a, __func__); if (!conn_exists(g_msub)) g_msub = NULL; } void ms_sends_msg(const char *hex) { struct msgb *msg; msg = msgb_from_hex("ms_sends_msg", 1024, hex); msg->l1h = msg->l2h = msg->l3h = msg->data; rx_from_ms(msg); msgb_free(msg); } void ms_sends_classmark_update(const struct osmo_gsm48_classmark *classmark) { struct ran_msg ran_dec = { .msg_type = RAN_MSG_CLASSMARK_UPDATE, .classmark_update = { .classmark = classmark, }, }; fake_msc_a_ran_dec(&ran_dec); } static int ms_sends_msg_fake(uint8_t pdisc, uint8_t msg_type) { int rc; struct ran_msg ran_dec; struct msgb *msg; struct gsm48_hdr *gh; msg = msgb_alloc(1024, "ms_sends_msg_fake"); msg->l1h = msg->l2h = msg->l3h = msg->data; gh = (struct gsm48_hdr*)msgb_put(msg, sizeof(*gh)); gh->proto_discr = pdisc; gh->msg_type = msg_type; /* some amount of data, whatever */ msgb_put(msg, 123); patch_l3_seq_nr(msg); ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_DTAP, .dtap = msg, }; rc = fake_msc_a_ran_dec(&ran_dec); talloc_free(msg); return rc; } static inline void ms_msg_log_err(uint8_t val, uint8_t msgtype) { int rc = ms_sends_msg_fake(val, msgtype); if (rc != -EACCES) log("Unexpected return value %u != %u for %s/%s", -rc, -EACCES, gsm48_pdisc_name(val), gsm48_cc_msg_name(msgtype)); } void thwart_rx_non_initial_requests() { log("requests shall be thwarted"); ms_msg_log_err(GSM48_PDISC_CC, GSM48_MT_CC_SETUP); ms_msg_log_err(GSM48_PDISC_MM, 0x33); /* nonexistent */ ms_msg_log_err(GSM48_PDISC_RR, GSM48_MT_RR_SYSINFO_1); ms_msg_log_err(GSM48_PDISC_SMS, GSM411_MT_CP_DATA); } void send_sms(struct vlr_subscr *receiver, struct vlr_subscr *sender, char *str) { struct gsm_sms *sms = sms_from_text(receiver, sender->msisdn, 0, str); gsm411_send_sms(net, receiver, sms); } unsigned char next_rand_byte = 0; /* override, requires '-Wl,--wrap=osmo_get_rand_id' */ int __real_osmo_get_rand_id(uint8_t *buf, size_t num); int __wrap_osmo_get_rand_id(uint8_t *buf, size_t num) { size_t i; for (i = 0; i < num; i++) buf[i] = next_rand_byte++; return 1; } /* override, requires '-Wl,--wrap=gsm340_gen_scts' */ void __real_gsm340_gen_scts(uint8_t *scts, time_t time); void __wrap_gsm340_gen_scts(uint8_t *scts, time_t time) { /* Write fixed time bytes for deterministic test results */ osmo_hexparse("07101000000000", scts, 7); } const char *paging_expecting_imsi = NULL; uint32_t paging_expecting_tmsi; bool paging_sent; void paging_expect_imsi(const char *imsi) { paging_expecting_imsi = imsi; paging_expecting_tmsi = GSM_RESERVED_TMSI; } void paging_expect_tmsi(uint32_t tmsi) { paging_expecting_tmsi = tmsi; paging_expecting_imsi = NULL; } /* override, requires '-Wl,--wrap=ran_peers_down_paging' */ int __real_ran_peers_down_paging(struct sccp_ran_inst *sri, enum CELL_IDENT page_where, struct vlr_subscr *vsub, enum paging_cause cause); int __wrap_ran_peers_down_paging(struct sccp_ran_inst *sri, enum CELL_IDENT page_where, struct vlr_subscr *vsub, enum paging_cause cause) { log("paging request (%s) to %s on %s", paging_cause_name(cause), vlr_subscr_name(vsub), osmo_rat_type_name(sri->ran->type)); OSMO_ASSERT(paging_expecting_imsi || (paging_expecting_tmsi != GSM_RESERVED_TMSI)); if (paging_expecting_imsi) VERBOSE_ASSERT(strcmp(paging_expecting_imsi, vsub->imsi), == 0, "%d"); if (paging_expecting_tmsi != GSM_RESERVED_TMSI) { VERBOSE_ASSERT(paging_expecting_tmsi, == vsub->tmsi, "0x%08x"); } paging_sent = true; return 1; } void clear_vlr() { struct vlr_subscr *vsub, *n; llist_for_each_entry_safe(vsub, n, &net->vlr->subscribers, list) { vlr_subscr_free(vsub); } net->authentication_required = false; net->a5_encryption_mask = (1 << 0); net->vlr->cfg.check_imei_rqd = false; net->vlr->cfg.assign_tmsi = false; net->vlr->cfg.retrieve_imeisv_early = false; net->vlr->cfg.retrieve_imeisv_ciphered = false; net->vlr->cfg.auth_tuple_max_reuse_count = 0; net->vlr->cfg.auth_reuse_old_sets_on_error = false; rx_from_ran = OSMO_RAT_GERAN_A; auth_request_sent = false; auth_request_expect_rand = NULL; auth_request_expect_autn = NULL; cipher_mode_cmd_sent = false; cipher_mode_cmd_sent_with_imeisv = false; cipher_mode_expect_kc = NULL; security_mode_ctrl_sent = false; security_mode_expect_ck = NULL; security_mode_expect_ik = NULL; next_rand_byte = 0; iu_release_expected = false; iu_release_sent = false; bssap_clear_expected = false; bssap_clear_sent = false; osmo_gettimeofday_override = false; expecting_crcx = -1; got_crcx = false; bssap_assignment_expected = false; bssap_assignment_sent = false; iu_rab_assignment_expected = false; iu_rab_assignment_sent = false; } static struct log_info_cat test_categories[] = { [DMSC] = { .name = "DMSC", .description = "Mobile Switching Center", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DRLL] = { .name = "DRLL", .description = "A-bis Radio Link Layer (RLL)", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DMM] = { .name = "DMM", .description = "Layer3 Mobility Management (MM)", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DRR] = { .name = "DRR", .description = "Layer3 Radio Resource (RR)", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DCC] = { .name = "DCC", .description = "Layer3 Call Control (CC)", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DVLR] = { .name = "DVLR", .description = "Visitor Location Register", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DREF] = { .name = "DREF", .description = "Reference Counting", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DPAG] = { .name = "DPAG", .description = "Paging Subsystem", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DIUCS] = { .name = "DIUCS", .description = "Iu-CS Protocol", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DMNCC] = { .name = "DMNCC", .description = "MNCC API for Call Control application", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DBSSAP] = { .name = "DBSSAP", .description = "BSSAP Protocol (A Interface)", .enabled = 1, .loglevel = LOGL_DEBUG, }, [DSS] = { .name = "DSS", .description = "Supplementary Services", .enabled = 1, .loglevel = LOGL_DEBUG, }, }; static struct log_info info = { .cat = test_categories, .num_cat = ARRAY_SIZE(test_categories), }; struct gsm_mncc *on_call_release_mncc_sends_to_cc_data = NULL; int mncc_recv(struct gsm_network *net, struct msgb *msg) { struct gsm_mncc *mncc = (void*)msg->data; log("MSC --> MNCC: callref 0x%x: %s", mncc->callref, get_mncc_name(mncc->msg_type)); if (mncc->msg_type == MNCC_REL_IND && on_call_release_mncc_sends_to_cc_data) { log("MNCC: callref 0x%x: Call Release triggering %s", mncc->callref, get_mncc_name(on_call_release_mncc_sends_to_cc_data->msg_type)); mncc_tx_to_cc(net, on_call_release_mncc_sends_to_cc_data); on_call_release_mncc_sends_to_cc_data = NULL; return 0; } OSMO_ASSERT(cc_to_mncc_tx_expected_msg_type); if (cc_to_mncc_tx_expected_msg_type != mncc->msg_type) { log("Mismatch! Expected MNCC msg type: %s", get_mncc_name(cc_to_mncc_tx_expected_msg_type)); abort(); } if (strcmp(cc_to_mncc_tx_expected_imsi, mncc->imsi)) { log("Mismatch! Expected MNCC msg IMSI: '%s', got '%s'", cc_to_mncc_tx_expected_imsi, mncc->imsi); abort(); } cc_to_mncc_tx_confirmed = true; cc_to_mncc_tx_got_callref = mncc->callref; cc_to_mncc_tx_expected_imsi = NULL; cc_to_mncc_tx_expected_msg_type = 0; talloc_free(msg); return 0; } struct osmo_gsup_client * __real_osmo_gsup_client_create2(struct ipaccess_unit *ipa_dev, const char *ip_addr, unsigned int tcp_port, osmo_gsup_client_read_cb_t read_cb, struct osmo_oap_client_config *oap_config); struct osmo_gsup_client * __wrap_osmo_gsup_client_create2(struct ipaccess_unit *ipa_dev, const char *ip_addr, unsigned int tcp_port, osmo_gsup_client_read_cb_t read_cb, struct osmo_oap_client_config *oap_config) { struct osmo_gsup_client *gsupc; gsupc = talloc_zero(msc_vlr_tests_ctx, struct osmo_gsup_client); OSMO_ASSERT(gsupc); return gsupc; } /* override, requires '-Wl,--wrap=gsup_client_send' */ int __real_osmo_gsup_client_send(struct osmo_gsup_client *gsupc, struct msgb *msg); int __wrap_osmo_gsup_client_send(struct osmo_gsup_client *gsupc, struct msgb *msg) { uint8_t buf[512]; int len; fprintf(stderr, "GSUP --> HLR: %s: %s\n", osmo_gsup_message_type_name(msg->data[0]), osmo_hexdump_nospc(msg->data, msg->len)); OSMO_ASSERT(gsup_tx_expected); OSMO_ASSERT(strlen(gsup_tx_expected) <= (sizeof(buf) * 2)); len = osmo_hexparse(gsup_tx_expected, buf, sizeof(buf)); if (len < 1) abort(); /* Compare only the length expected. Extra data is fine, to not care about new GSUP IEs invented later. */ if (msg->len < len) { fprintf(stderr, "ERROR: GSUP message too short, expected '%s'\n", gsup_tx_expected); abort(); } if (memcmp(msg->data, buf, len)) { fprintf(stderr, "ERROR: GSUP message mismatch, expected it to start with '%s'\n", gsup_tx_expected); abort(); } talloc_free(msg); gsup_tx_confirmed = true; gsup_tx_expected = NULL; return 0; } struct rtp_stream fake_rtp[2] = { { .dir = RTP_TO_RAN, .local = { .ip = "10.23.42.1", .port = 99, }, .remote = { .ip = "10.23.42.2", .port = 100, }, }, { .dir = RTP_TO_CN, .local = { .ip = "10.23.42.1", .port = 23, }, .remote = { .ip = "10.23.42.2", .port = 42, }, }, }; void expect_crcx(enum rtp_direction towards) { OSMO_ASSERT(expecting_crcx == -1); expecting_crcx = towards; got_crcx = false; } /* override, requires '-Wl,--wrap=call_leg_ensure_ci' */ int __real_call_leg_ensure_ci(struct call_leg *cl, enum rtp_direction dir, uint32_t call_id, struct gsm_trans *for_trans, const enum mgcp_codecs *codec_if_known, const struct osmo_sockaddr_str *remote_addr_if_known); int __wrap_call_leg_ensure_ci(struct call_leg *cl, enum rtp_direction dir, uint32_t call_id, struct gsm_trans *for_trans, const enum mgcp_codecs *codec_if_known, const struct osmo_sockaddr_str *remote_addr_if_known) { if (!cl->rtp[dir]) { log("MGW <--CRCX to %s-- MSC: callref=0x%x", rtp_direction_name(dir), call_id); OSMO_ASSERT(expecting_crcx == dir); expecting_crcx = -1; got_crcx = true; call_leg_ensure_rtp_alloc(cl, dir, call_id, for_trans); if (codec_if_known) rtp_stream_set_codec(cl->rtp[dir], *codec_if_known); if (remote_addr_if_known && osmo_sockaddr_str_is_nonzero(remote_addr_if_known)) rtp_stream_set_remote_addr(cl->rtp[dir], remote_addr_if_known); } return 0; } void crcx_ok(enum rtp_direction dir) { struct msc_a *msc_a = msub_msc_a(g_msub); struct call_leg *cl = msc_a->cc.call_leg; OSMO_ASSERT(cl); OSMO_ASSERT(cl->rtp[dir]); osmo_sockaddr_str_from_str(&cl->rtp[dir]->local, "10.23.23.1", 23); //osmo_sockaddr_str_from_str(&cl->rtp[dir].remote, "10.42.42.1", 42); log("MGW --CRCX OK to %s--> MSC", rtp_direction_name(dir)); osmo_fsm_inst_dispatch(cl->fi, CALL_LEG_EV_RTP_STREAM_ADDR_AVAILABLE, cl->rtp[dir]); } static int fake_vlr_tx_lu_acc(void *msc_conn_ref, uint32_t send_tmsi) { struct msc_a *msc_a = msc_conn_ref; if (send_tmsi == GSM_RESERVED_TMSI) btw("sending LU Accept for %s", msc_a->c.fi->id); else btw("sending LU Accept for %s, with TMSI 0x%08x", msc_a->c.fi->id, send_tmsi); lu_result_sent |= RES_ACCEPT; return 0; } static int fake_vlr_tx_lu_rej(void *msc_conn_ref, enum gsm48_reject_value cause) { struct msc_a *msc_a = msc_conn_ref; btw("sending LU Reject for %s, cause %u", msc_a->c.fi->id, cause); lu_result_sent |= RES_REJECT; return 0; } static int fake_vlr_tx_cm_serv_rej(void *msc_conn_ref, enum osmo_cm_service_type cm_service_type, enum gsm48_reject_value cause) { struct msc_a *msc_a = msc_conn_ref; btw("sending CM Service Reject (%s) for %s, cause: %s", osmo_cm_service_type_name(cm_service_type), msc_a->c.fi->id, gsm48_reject_value_name(cause)); cm_service_result_sent |= RES_REJECT; return 0; } static int fake_vlr_tx_auth_req(void *msc_conn_ref, struct vlr_auth_tuple *at, bool send_autn) { struct msc_a *msc_a = msc_conn_ref; char *hex; bool ok = true; btw("sending %s Auth Request for %s: tuple use_count=%d key_seq=%d auth_types=0x%x and...", send_autn? "UMTS" : "GSM", msc_a->c.fi->id, at->use_count, at->key_seq, at->vec.auth_types); hex = osmo_hexdump_nospc((void*)&at->vec.rand, sizeof(at->vec.rand)); btw("...rand=%s", hex); if (!auth_request_expect_rand || strcmp(hex, auth_request_expect_rand) != 0) { ok = false; log("FAILURE: expected rand=%s", auth_request_expect_rand ? auth_request_expect_rand : "-"); } if (send_autn) { hex = osmo_hexdump_nospc((void*)&at->vec.autn, sizeof(at->vec.autn)); btw("...autn=%s", hex); if (!auth_request_expect_autn || strcmp(hex, auth_request_expect_autn) != 0) { ok = false; log("FAILURE: expected autn=%s", auth_request_expect_autn ? auth_request_expect_autn : "-"); } } else if (auth_request_expect_autn) { ok = false; log("FAILURE: no AUTN sent, expected AUTN = %s", auth_request_expect_autn); } if (send_autn) btw("...expecting res=%s", osmo_hexdump_nospc((void*)&at->vec.res, at->vec.res_len)); else btw("...expecting sres=%s", osmo_hexdump_nospc((void*)&at->vec.sres, sizeof(at->vec.sres))); auth_request_sent = ok; return 0; } static int fake_vlr_tx_auth_rej(void *msc_conn_ref) { struct msc_a *msc_a = msc_conn_ref; btw("sending Auth Reject for %s", msc_a->c.fi->id); return 0; } void ms_sends_ciphering_mode_complete(const char *inner_ran_msg) { struct ran_msg ran_dec; msc_a_get(msub_msc_a(g_msub), __func__); ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_CIPHER_MODE_COMPLETE, }; fake_msc_a_ran_dec(&ran_dec); if (inner_ran_msg) { struct msgb *msg = msgb_from_hex("cipher_mode_complete_ran", 1024, inner_ran_msg); msg->l1h = msg->l2h = msg->l3h = msg->data; ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_DTAP, .dtap = msg, }; patch_l3_seq_nr(msg); fake_msc_a_ran_dec(&ran_dec); msgb_free(msg); } msc_a_put(msub_msc_a(g_msub), __func__); if (!conn_exists(g_msub)) g_msub = NULL; } void ms_sends_security_mode_complete(uint8_t utran_encryption) { struct ran_msg ran_dec; ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_CIPHER_MODE_COMPLETE, .cipher_mode_complete.utran_encryption = utran_encryption, }; fake_msc_a_ran_dec(&ran_dec); if (!conn_exists(g_msub)) g_msub = NULL; } void ms_sends_assignment_complete(enum mgcp_codecs assigned_codec) { struct ran_msg ran_dec; ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_ASSIGNMENT_COMPLETE, .assignment_complete = { .codec = assigned_codec, }, }; fake_msc_a_ran_dec(&ran_dec); if (!conn_exists(g_msub)) g_msub = NULL; } void ran_sends_clear_complete() { struct ran_msg ran_dec; ran_dec = (struct ran_msg){ .msg_type = RAN_MSG_CLEAR_COMPLETE, }; fake_msc_a_ran_dec(&ran_dec); if (!conn_exists(g_msub)) g_msub = NULL; } const struct timeval fake_time_start_time = { 123, 456 }; void fake_time_start() { struct timespec *clock_override; osmo_gettimeofday_override_time = fake_time_start_time; osmo_gettimeofday_override = true; clock_override = osmo_clock_override_gettimespec(CLOCK_MONOTONIC); OSMO_ASSERT(clock_override); clock_override->tv_sec = fake_time_start_time.tv_sec; clock_override->tv_nsec = fake_time_start_time.tv_usec * 1000; osmo_clock_override_enable(CLOCK_MONOTONIC, true); fake_time_passes(0, 0); } static struct { bool verbose; int run_test_nr; } cmdline_opts = { .verbose = false, .run_test_nr = -1, }; static void print_help(const char *program) { printf("Usage:\n" " %s [-v] [N [N...]]\n" "Options:\n" " -h --help show this text.\n" " -v --verbose print source file and line numbers\n" " N run only the Nth test (first test is N=1)\n", program ); } static void handle_options(int argc, char **argv) { while (1) { int option_index = 0, c; static struct option long_options[] = { {"help", 0, 0, 'h'}, {"verbose", 1, 0, 'v'}, {0, 0, 0, 0} }; c = getopt_long(argc, argv, "hv", long_options, &option_index); if (c == -1) break; switch (c) { case 'h': print_help(argv[0]); exit(0); case 'v': cmdline_opts.verbose = true; break; default: /* catch unknown options *as well as* missing arguments. */ fprintf(stderr, "Error in command line options. Exiting.\n"); exit(-1); break; } } } static void run_tests(int nr) { int test_nr; nr--; /* arg's first test is 1, in here it's 0 */ for (test_nr = 0; msc_vlr_tests[test_nr]; test_nr++) { size_t talloc_blocks_before_test; if (nr >= 0 && test_nr != nr) continue; if (cmdline_opts.verbose) fprintf(stderr, "(test nr %d)\n", test_nr + 1); talloc_blocks_before_test = talloc_total_blocks(msc_vlr_tests_ctx); msc_vlr_tests[test_nr](); if (talloc_total_blocks(msc_vlr_tests_ctx) != talloc_blocks_before_test) { fprintf(stderr, "ERROR: talloc leak: %zu blocks\n", talloc_total_blocks(msc_vlr_tests_ctx) - talloc_blocks_before_test); talloc_report_full(msc_vlr_tests_ctx, stderr); fprintf(stderr, "\n"); } if (talloc_total_blocks(msgb_ctx) > 1) { fprintf(stderr, "ERROR: msgb leak:\n"); talloc_report_full(msgb_ctx, stderr); fprintf(stderr, "\n"); } if (cmdline_opts.verbose) fprintf(stderr, "(test nr %d)\n", test_nr + 1); } } struct gsm_network *test_net(void *ctx) { struct gsm_network *net = gsm_network_init(ctx, mncc_recv); net->gsup_server_addr_str = talloc_strdup(net, "no_gsup_server"); net->gsup_server_port = 0; OSMO_ASSERT(msc_vlr_alloc(net) == 0); OSMO_ASSERT(net->vlr); OSMO_ASSERT(msc_gsup_client_start(net) == 0); OSMO_ASSERT(net->gcm); OSMO_ASSERT(msc_vlr_start(net) == 0); net->vlr->ops.tx_lu_acc = fake_vlr_tx_lu_acc; net->vlr->ops.tx_lu_rej = fake_vlr_tx_lu_rej; net->vlr->ops.tx_cm_serv_acc = msc_vlr_tx_cm_serv_acc; net->vlr->ops.tx_cm_serv_rej = fake_vlr_tx_cm_serv_rej; net->vlr->ops.tx_auth_req = fake_vlr_tx_auth_req; net->vlr->ops.tx_auth_rej = fake_vlr_tx_auth_rej; net->vlr->ops.set_ciph_mode = msc_a_vlr_set_cipher_mode; /* Allocate fake SCCP Ran Instances */ net->a.sri = talloc_zero(net, struct sccp_ran_inst); *net->a.sri = (struct sccp_ran_inst){ .ran = &test_ran_infra[OSMO_RAT_GERAN_A], }; INIT_LLIST_HEAD(&net->a.sri->ran_peers); INIT_LLIST_HEAD(&net->a.sri->ran_conns); net->iu.sri = talloc_zero(net, struct sccp_ran_inst); *net->iu.sri = (struct sccp_ran_inst){ .ran = &test_ran_infra[OSMO_RAT_UTRAN_IU], }; INIT_LLIST_HEAD(&net->iu.sri->ran_peers); INIT_LLIST_HEAD(&net->iu.sri->ran_conns); net->mgw.tdefs = g_mgw_tdefs; mgcp_client_conf_init(&net->mgw.conf); net->mgw.tdefs = g_mgw_tdefs; net->mgw.client = mgcp_client_init(net, &net->mgw.conf); return net; } int main(int argc, char **argv) { handle_options(argc, argv); osmo_fsm_term_safely(true); msc_vlr_tests_ctx = talloc_named_const(NULL, 0, "msc_vlr_tests_ctx"); msgb_ctx = msgb_talloc_ctx_init(msc_vlr_tests_ctx, 0); osmo_init_logging2(msc_vlr_tests_ctx, &info); _log_lines = cmdline_opts.verbose; OSMO_ASSERT(osmo_stderr_target); log_set_use_color(osmo_stderr_target, 0); log_set_print_timestamp(osmo_stderr_target, 0); log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE); log_set_print_category(osmo_stderr_target, 1); log_set_print_category_hex(osmo_stderr_target, 0); log_set_category_filter(osmo_stderr_target, DLSMS, 1, LOGL_DEBUG); log_set_category_filter(osmo_stderr_target, DLMGCP, 0, LOGL_NOTICE); if (cmdline_opts.verbose) { log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_BASENAME); log_set_print_filename_pos(osmo_stderr_target, LOG_FILENAME_POS_LINE_END); log_set_use_color(osmo_stderr_target, 1); log_set_print_level(osmo_stderr_target, 1); } net = test_net(msc_vlr_tests_ctx); osmo_fsm_log_addr(false); osmo_fsm_log_timeouts(cmdline_opts.verbose); call_leg_init(net); OSMO_ASSERT(osmo_fsm_register(&dummy_msc_i_fsm) == 0); clear_vlr(); if (optind >= argc) run_tests(-1); else { int arg; long int nr; for (arg = optind; arg < argc; arg++) { errno = 0; nr = strtol(argv[arg], NULL, 10); if (errno) { fprintf(stderr, "Invalid argument: %s\n", argv[arg]); exit(1); } run_tests(nr); } } printf("Done\n"); return 0; }