| /* |
| * BSC NAT Message filtering |
| * |
| * (C) 2010-2013 by Holger Hans Peter Freyther <zecke@selfish.org> |
| * (C) 2010-2013 by On-Waves |
| * |
| * All Rights Reserved |
| * |
| * 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 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/>. |
| * |
| */ |
| |
| |
| #include <openbsc/debug.h> |
| #include <openbsc/gsm_data.h> |
| #include <openbsc/bsc_nat.h> |
| #include <openbsc/bsc_nat_sccp.h> |
| #include <openbsc/bsc_msg_filter.h> |
| #include <openbsc/nat_rewrite_trie.h> |
| |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/backtrace.h> |
| #include <osmocom/core/talloc.h> |
| |
| #include <osmocom/sccp/sccp.h> |
| #include <osmocom/gsm/protocol/gsm_08_08.h> |
| |
| #include <stdio.h> |
| |
| /* test messages for ipa */ |
| static uint8_t ipa_id[] = { |
| 0x00, 0x01, 0xfe, 0x06, |
| }; |
| |
| /* SCCP messages are below */ |
| static uint8_t gsm_reset[] = { |
| 0x00, 0x12, 0xfd, |
| 0x09, 0x00, 0x03, 0x05, 0x07, 0x02, 0x42, 0xfe, |
| 0x02, 0x42, 0xfe, 0x06, 0x00, 0x04, 0x30, 0x04, |
| 0x01, 0x20, |
| }; |
| |
| static const uint8_t gsm_reset_ack[] = { |
| 0x00, 0x13, 0xfd, |
| 0x09, 0x00, 0x03, 0x07, 0x0b, 0x04, 0x43, 0x01, |
| 0x00, 0xfe, 0x04, 0x43, 0x5c, 0x00, 0xfe, 0x03, |
| 0x00, 0x01, 0x31, |
| }; |
| |
| static const uint8_t gsm_paging[] = { |
| 0x00, 0x20, 0xfd, |
| 0x09, 0x00, 0x03, 0x07, 0x0b, 0x04, 0x43, 0x01, |
| 0x00, 0xfe, 0x04, 0x43, 0x5c, 0x00, 0xfe, 0x10, |
| 0x00, 0x0e, 0x52, 0x08, 0x08, 0x29, 0x47, 0x10, |
| 0x02, 0x01, 0x31, 0x97, 0x61, 0x1a, 0x01, 0x06, |
| }; |
| |
| /* BSC -> MSC connection open */ |
| static const uint8_t bssmap_cr[] = { |
| 0x00, 0x2c, 0xfd, |
| 0x01, 0x01, 0x02, 0x03, 0x02, 0x02, 0x04, 0x02, |
| 0x42, 0xfe, 0x0f, 0x1f, 0x00, 0x1d, 0x57, 0x05, |
| 0x08, 0x00, 0x72, 0xf4, 0x80, 0x20, 0x12, 0xc3, |
| 0x50, 0x17, 0x10, 0x05, 0x24, 0x11, 0x03, 0x33, |
| 0x19, 0xa2, 0x08, 0x29, 0x47, 0x10, 0x02, 0x01, |
| 0x31, 0x97, 0x61, 0x00 |
| }; |
| |
| /* MSC -> BSC connection confirm */ |
| static const uint8_t bssmap_cc[] = { |
| 0x00, 0x0a, 0xfd, |
| 0x02, 0x01, 0x02, 0x03, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, |
| }; |
| |
| /* MSC -> BSC released */ |
| static const uint8_t bssmap_released[] = { |
| 0x00, 0x0e, 0xfd, |
| 0x04, 0x00, 0x00, 0x03, 0x01, 0x02, 0x03, 0x00, 0x01, 0x0f, |
| 0x02, 0x23, 0x42, 0x00, |
| }; |
| |
| /* BSC -> MSC released */ |
| static const uint8_t bssmap_release_complete[] = { |
| 0x00, 0x07, 0xfd, |
| 0x05, 0x01, 0x02, 0x03, 0x00, 0x00, 0x03 |
| }; |
| |
| /* both directions IT timer */ |
| static const uint8_t connnection_it[] = { |
| 0x00, 0x0b, 0xfd, |
| 0x10, 0x01, 0x02, 0x03, 0x01, 0x02, 0x03, |
| 0x00, 0x00, 0x00, 0x00, |
| }; |
| |
| /* error in both directions */ |
| static const uint8_t proto_error[] = { |
| 0x00, 0x05, 0xfd, |
| 0x0f, 0x22, 0x33, 0x44, 0x00, |
| }; |
| |
| /* MGCP wrap... */ |
| static const uint8_t mgcp_msg[] = { |
| 0x00, 0x03, 0xfc, |
| 0x20, 0x20, 0x20, |
| }; |
| |
| /* location updating request */ |
| static const uint8_t bss_lu[] = { |
| 0x00, 0x2e, 0xfd, |
| 0x01, 0x91, 0x45, 0x14, 0x02, 0x02, 0x04, 0x02, |
| 0x42, 0xfe, 0x0f, 0x21, 0x00, 0x1f, 0x57, 0x05, |
| 0x08, 0x00, 0x72, 0xf4, 0x80, 0x20, 0x14, 0xc3, |
| 0x50, 0x17, 0x12, 0x05, 0x08, 0x70, 0x72, 0xf4, |
| 0x80, 0xff, 0xfe, 0x30, 0x08, 0x29, 0x44, 0x50, |
| 0x12, 0x03, 0x24, 0x01, 0x95, 0x00 |
| }; |
| |
| /* paging response */ |
| static const uint8_t pag_resp[] = { |
| 0x00, 0x2c, 0xfd, 0x01, 0xe5, 0x68, |
| 0x14, 0x02, 0x02, 0x04, 0x02, 0x42, 0xfe, 0x0f, |
| 0x1f, 0x00, 0x1d, 0x57, 0x05, 0x08, 0x00, 0x72, |
| 0xf4, 0x80, 0x20, 0x16, 0xc3, 0x50, 0x17, 0x10, |
| 0x06, 0x27, 0x01, 0x03, 0x30, 0x18, 0x96, 0x08, |
| 0x29, 0x26, 0x30, 0x32, 0x11, 0x42, 0x01, 0x19, |
| 0x00 |
| }; |
| |
| struct filter_result { |
| const uint8_t *data; |
| const uint16_t length; |
| const int dir; |
| const int result; |
| }; |
| |
| static const struct filter_result results[] = { |
| { |
| .data = ipa_id, |
| .length = ARRAY_SIZE(ipa_id), |
| .dir = DIR_MSC, |
| .result = 1, |
| }, |
| { |
| .data = gsm_reset, |
| .length = ARRAY_SIZE(gsm_reset), |
| .dir = DIR_MSC, |
| .result = 1, |
| }, |
| { |
| .data = gsm_reset_ack, |
| .length = ARRAY_SIZE(gsm_reset_ack), |
| .dir = DIR_BSC, |
| .result = 1, |
| }, |
| { |
| .data = gsm_paging, |
| .length = ARRAY_SIZE(gsm_paging), |
| .dir = DIR_BSC, |
| .result = 0, |
| }, |
| { |
| .data = bssmap_cr, |
| .length = ARRAY_SIZE(bssmap_cr), |
| .dir = DIR_MSC, |
| .result = 0, |
| }, |
| { |
| .data = bssmap_cc, |
| .length = ARRAY_SIZE(bssmap_cc), |
| .dir = DIR_BSC, |
| .result = 0, |
| }, |
| { |
| .data = bssmap_released, |
| .length = ARRAY_SIZE(bssmap_released), |
| .dir = DIR_MSC, |
| .result = 0, |
| }, |
| { |
| .data = bssmap_release_complete, |
| .length = ARRAY_SIZE(bssmap_release_complete), |
| .dir = DIR_BSC, |
| .result = 0, |
| }, |
| { |
| .data = mgcp_msg, |
| .length = ARRAY_SIZE(mgcp_msg), |
| .dir = DIR_MSC, |
| .result = 0, |
| }, |
| { |
| .data = connnection_it, |
| .length = ARRAY_SIZE(connnection_it), |
| .dir = DIR_BSC, |
| .result = 0, |
| }, |
| { |
| .data = connnection_it, |
| .length = ARRAY_SIZE(connnection_it), |
| .dir = DIR_MSC, |
| .result = 0, |
| }, |
| { |
| .data = proto_error, |
| .length = ARRAY_SIZE(proto_error), |
| .dir = DIR_BSC, |
| .result = 0, |
| }, |
| { |
| .data = proto_error, |
| .length = ARRAY_SIZE(proto_error), |
| .dir = DIR_MSC, |
| .result = 0, |
| }, |
| |
| }; |
| |
| static void test_filter(void) |
| { |
| int i; |
| |
| |
| /* start testinh with proper messages */ |
| printf("Testing BSS Filtering.\n"); |
| for (i = 0; i < ARRAY_SIZE(results); ++i) { |
| int result; |
| struct bsc_nat_parsed *parsed; |
| struct msgb *msg = msgb_alloc(4096, "test-message"); |
| |
| printf("Going to test item: %d\n", i); |
| memcpy(msg->data, results[i].data, results[i].length); |
| msg->l2h = msgb_put(msg, results[i].length); |
| |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Failed to parse the message\n"); |
| continue; |
| } |
| |
| result = bsc_nat_filter_ipa(results[i].dir, msg, parsed); |
| if (result != results[i].result) { |
| printf("FAIL: Not the expected result got: %d wanted: %d\n", |
| result, results[i].result); |
| } |
| |
| msgb_free(msg); |
| } |
| } |
| |
| #include "bsc_data.c" |
| |
| static void copy_to_msg(struct msgb *msg, const uint8_t *data, unsigned int length) |
| { |
| msgb_reset(msg); |
| msg->l2h = msgb_put(msg, length); |
| memcpy(msg->l2h, data, msgb_l2len(msg)); |
| } |
| |
| static void verify_msg(struct msgb *out, const uint8_t *ref, int ref_len) |
| { |
| if (out->len != ref_len) { |
| printf("FAIL: The size should match: %d vs. %d\n", |
| out->len, ref_len); |
| printf("%s\n", osmo_hexdump(out->data, out->len)); |
| printf("Wanted\n"); |
| printf("%s\n", osmo_hexdump(ref, ref_len)); |
| abort(); |
| } |
| |
| if (memcmp(out->data, ref, out->len) != 0) { |
| printf("FAIL: the data should be changed.\n"); |
| printf("%s\n", osmo_hexdump(out->data, out->len)); |
| printf("Wanted\n"); |
| printf("%s\n", osmo_hexdump(ref, ref_len)); |
| abort(); |
| } |
| } |
| |
| |
| #define VERIFY(con_found, con, msg, ver, str) \ |
| if (!con_found) { \ |
| printf("Failed to find connection.\n"); \ |
| abort(); \ |
| } \ |
| if (con_found->bsc != con) { \ |
| printf("Got connection of the wrong BSC: %d\n", \ |
| con_found->bsc->cfg->nr); \ |
| abort(); \ |
| } \ |
| if (memcmp(msg->data, ver, sizeof(ver)) != 0) { \ |
| printf("Failed to patch the %s msg.\n", str); \ |
| abort(); \ |
| } |
| |
| /* test conn tracking once */ |
| static void test_contrack() |
| { |
| struct bsc_nat *nat; |
| struct bsc_connection *con; |
| struct nat_sccp_connection *con_found; |
| struct nat_sccp_connection *rc_con; |
| struct bsc_nat_parsed *parsed; |
| struct msgb *msg; |
| |
| printf("Testing connection tracking.\n"); |
| nat = bsc_nat_alloc(); |
| con = bsc_connection_alloc(nat); |
| con->cfg = bsc_config_alloc(nat, "foo", 0); |
| bsc_config_add_lac(con->cfg, 23); |
| bsc_config_add_lac(con->cfg, 49); |
| bsc_config_add_lac(con->cfg, 42); |
| bsc_config_del_lac(con->cfg, 49); |
| bsc_config_add_lac(con->cfg, 1111); |
| msg = msgb_alloc(4096, "test"); |
| |
| /* 1.) create a connection */ |
| copy_to_msg(msg, bsc_cr, sizeof(bsc_cr)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_msc(msg, parsed, con); |
| if (con_found != NULL) { |
| printf("Con should not exist realref(%u)\n", |
| sccp_src_ref_to_int(&con_found->real_ref)); |
| abort(); |
| } |
| rc_con = create_sccp_src_ref(con, parsed); |
| if (!rc_con) { |
| printf("Failed to create a ref\n"); |
| abort(); |
| } |
| con_found = patch_sccp_src_ref_to_msc(msg, parsed, con); |
| if (!con_found) { |
| printf("Failed to find connection.\n"); |
| abort(); |
| } |
| if (con_found->bsc != con) { |
| printf("Got connection of the wrong BSC: %d\n", |
| con_found->bsc->cfg->nr); |
| abort(); |
| } |
| if (con_found != rc_con) { |
| printf("Failed to find the right connection.\n"); |
| abort(); |
| } |
| if (memcmp(msg->data, bsc_cr_patched, sizeof(bsc_cr_patched)) != 0) { |
| printf("Failed to patch the BSC CR msg.\n"); |
| abort(); |
| } |
| talloc_free(parsed); |
| |
| /* 2.) get the cc */ |
| copy_to_msg(msg, msc_cc, sizeof(msc_cc)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_bsc(msg, parsed, nat); |
| VERIFY(con_found, con, msg, msc_cc_patched, "MSC CC"); |
| if (update_sccp_src_ref(con_found, parsed) != 0) { |
| printf("Failed to update the SCCP con.\n"); |
| abort(); |
| } |
| |
| /* 3.) send some data */ |
| copy_to_msg(msg, bsc_dtap, sizeof(bsc_dtap)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_msc(msg, parsed, con); |
| VERIFY(con_found, con, msg, bsc_dtap_patched, "BSC DTAP"); |
| |
| /* 4.) receive some data */ |
| copy_to_msg(msg, msc_dtap, sizeof(msc_dtap)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_bsc(msg, parsed, nat); |
| VERIFY(con_found, con, msg, msc_dtap_patched, "MSC DTAP"); |
| |
| /* 5.) close the connection */ |
| copy_to_msg(msg, msc_rlsd, sizeof(msc_rlsd)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_bsc(msg, parsed, nat); |
| VERIFY(con_found, con, msg, msc_rlsd_patched, "MSC RLSD"); |
| |
| /* 6.) confirm the connection close */ |
| copy_to_msg(msg, bsc_rlc, sizeof(bsc_rlc)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_msc(msg, parsed, con); |
| if (!con_found) { |
| printf("Failed to find connection.\n"); |
| abort(); |
| } |
| if (con_found->bsc != con) { |
| printf("Got connection of the wrong BSC: %d\n", |
| con_found->bsc->cfg->nr); |
| abort(); |
| } |
| if (memcmp(msg->data, bsc_rlc_patched, sizeof(bsc_rlc_patched)) != 0) { |
| printf("Failed to patch the BSC CR msg.\n"); |
| abort(); |
| } |
| remove_sccp_src_ref(con, msg, parsed); |
| talloc_free(parsed); |
| |
| copy_to_msg(msg, bsc_rlc, sizeof(bsc_rlc)); |
| parsed = bsc_nat_parse(msg); |
| con_found = patch_sccp_src_ref_to_msc(msg, parsed, con); |
| |
| /* verify that it is gone */ |
| if (con_found != NULL) { |
| printf("Con should not exist real_ref(%u)\n", |
| sccp_src_ref_to_int(&con_found->real_ref)); |
| abort(); |
| } |
| talloc_free(parsed); |
| |
| |
| bsc_config_free(con->cfg); |
| bsc_nat_free(nat); |
| msgb_free(msg); |
| } |
| |
| static void test_paging(void) |
| { |
| struct bsc_nat *nat; |
| struct bsc_connection *con; |
| struct bsc_config *cfg; |
| |
| printf("Testing paging by lac.\n"); |
| |
| nat = bsc_nat_alloc(); |
| con = bsc_connection_alloc(nat); |
| cfg = bsc_config_alloc(nat, "unknown", 0); |
| con->cfg = cfg; |
| bsc_config_add_lac(cfg, 23); |
| con->authenticated = 1; |
| llist_add(&con->list_entry, &nat->bsc_connections); |
| |
| /* Test it by not finding it */ |
| if (bsc_config_handles_lac(cfg, 8213) != 0) { |
| printf("Should not be handled.\n"); |
| abort(); |
| } |
| |
| /* Test by finding it */ |
| bsc_config_del_lac(cfg, 23); |
| bsc_config_add_lac(cfg, 8213); |
| if (bsc_config_handles_lac(cfg, 8213) == 0) { |
| printf("Should have found it.\n"); |
| abort(); |
| } |
| |
| bsc_nat_free(nat); |
| } |
| |
| static void test_mgcp_allocations(void) |
| { |
| #if 0 |
| struct bsc_connection *bsc; |
| struct bsc_nat *nat; |
| struct nat_sccp_connection con; |
| int i, j, multiplex; |
| |
| printf("Testing MGCP.\n"); |
| memset(&con, 0, sizeof(con)); |
| |
| nat = bsc_nat_alloc(); |
| nat->bsc_endpoints = talloc_zero_array(nat, |
| struct bsc_endpoint, |
| 65); |
| nat->mgcp_cfg = mgcp_config_alloc(); |
| nat->mgcp_cfg->trunk.number_endpoints = 64; |
| |
| bsc = bsc_connection_alloc(nat); |
| bsc->cfg = bsc_config_alloc(nat, "foo", 0); |
| bsc->cfg->max_endpoints = 60; |
| bsc_config_add_lac(bsc->cfg, 2323); |
| bsc->last_endpoint = 0x22; |
| con.bsc = bsc; |
| |
| bsc_init_endps_if_needed(bsc); |
| |
| i = 1; |
| do { |
| if (bsc_assign_endpoint(bsc, &con) != 0) { |
| printf("failed to allocate... on iteration %d\n", i); |
| break; |
| } |
| ++i; |
| } while(1); |
| |
| multiplex = bsc_mgcp_nr_multiplexes(bsc->cfg->max_endpoints); |
| for (i = 0; i < multiplex; ++i) { |
| for (j = 0; j < 32; ++j) |
| printf("%d", bsc->_endpoint_status[i*32 + j]); |
| printf(": %d of %d\n", i*32 + 32, 32 * 8); |
| } |
| #endif |
| } |
| |
| static void test_mgcp_ass_tracking(void) |
| { |
| struct bsc_connection *bsc; |
| struct bsc_nat *nat; |
| struct nat_sccp_connection con; |
| struct bsc_nat_parsed *parsed; |
| struct msgb *msg; |
| |
| printf("Testing MGCP.\n"); |
| memset(&con, 0, sizeof(con)); |
| |
| nat = bsc_nat_alloc(); |
| nat->bsc_endpoints = talloc_zero_array(nat, |
| struct bsc_endpoint, |
| 33); |
| nat->mgcp_cfg = mgcp_config_alloc(); |
| nat->mgcp_cfg->trunk.number_endpoints = 64; |
| mgcp_endpoints_allocate(&nat->mgcp_cfg->trunk); |
| |
| bsc = bsc_connection_alloc(nat); |
| bsc->cfg = bsc_config_alloc(nat, "foo", 0); |
| bsc_config_add_lac(bsc->cfg, 2323); |
| bsc->last_endpoint = 0x1e; |
| con.bsc = bsc; |
| |
| msg = msgb_alloc(4096, "foo"); |
| copy_to_msg(msg, ass_cmd, sizeof(ass_cmd)); |
| parsed = bsc_nat_parse(msg); |
| |
| if (msg->l2h[16] != 0 || |
| msg->l2h[17] != 0x1) { |
| printf("Input is not as expected.. %s 0x%x\n", |
| osmo_hexdump(msg->l2h, msgb_l2len(msg)), |
| msg->l2h[17]); |
| abort(); |
| } |
| |
| if (bsc_mgcp_assign_patch(&con, msg) != 0) { |
| printf("Failed to handle assignment.\n"); |
| abort(); |
| } |
| |
| if (con.msc_endp != 1) { |
| printf("Timeslot should be 1.\n"); |
| abort(); |
| } |
| |
| if (con.bsc_endp != 0x1) { |
| printf("Assigned timeslot should have been 1.\n"); |
| abort(); |
| } |
| if (con.bsc->_endpoint_status[0x1] != 1) { |
| printf("The status on the BSC is wrong.\n"); |
| abort(); |
| } |
| |
| int multiplex, timeslot; |
| mgcp_endpoint_to_timeslot(0x1, &multiplex, ×lot); |
| |
| uint16_t cic = htons(timeslot & 0x1f); |
| if (memcmp(&cic, &msg->l2h[16], sizeof(cic)) != 0) { |
| printf("Message was not patched properly\n"); |
| printf("data cic: 0x%x %s\n", cic, osmo_hexdump(msg->l2h, msgb_l2len(msg))); |
| abort(); |
| } |
| |
| talloc_free(parsed); |
| |
| bsc_mgcp_dlcx(&con); |
| if (con.bsc_endp != -1 || con.msc_endp != -1 || |
| con.bsc->_endpoint_status[1] != 0 || con.bsc->last_endpoint != 0x1) { |
| printf("Clearing should remove the mapping.\n"); |
| abort(); |
| } |
| |
| bsc_config_free(bsc->cfg); |
| bsc_nat_free(nat); |
| } |
| |
| /* test the code to find a given connection */ |
| static void test_mgcp_find(void) |
| { |
| struct bsc_nat *nat; |
| struct bsc_connection *con; |
| struct nat_sccp_connection *sccp_con; |
| |
| printf("Testing finding of a BSC Connection\n"); |
| |
| nat = bsc_nat_alloc(); |
| con = bsc_connection_alloc(nat); |
| llist_add(&con->list_entry, &nat->bsc_connections); |
| |
| sccp_con = talloc_zero(con, struct nat_sccp_connection); |
| sccp_con->msc_endp = 12; |
| sccp_con->bsc_endp = 12; |
| sccp_con->bsc = con; |
| llist_add(&sccp_con->list_entry, &nat->sccp_connections); |
| |
| if (bsc_mgcp_find_con(nat, 11) != NULL) { |
| printf("Found the wrong connection.\n"); |
| abort(); |
| } |
| |
| if (bsc_mgcp_find_con(nat, 12) != sccp_con) { |
| printf("Didn't find the connection\n"); |
| abort(); |
| } |
| |
| /* free everything */ |
| bsc_nat_free(nat); |
| } |
| |
| static void test_mgcp_rewrite(void) |
| { |
| int i; |
| struct msgb *output; |
| printf("Testing rewriting MGCP messages.\n"); |
| |
| for (i = 0; i < ARRAY_SIZE(mgcp_messages); ++i) { |
| const char *orig = mgcp_messages[i].orig; |
| const char *patc = mgcp_messages[i].patch; |
| const char *ip = mgcp_messages[i].ip; |
| const int port = mgcp_messages[i].port; |
| const int expected_payload_type = mgcp_messages[i].payload_type; |
| const int ensure_mode_set = mgcp_messages[i].ensure_mode_set; |
| int payload_type = -1; |
| |
| char *input = strdup(orig); |
| |
| output = bsc_mgcp_rewrite(input, strlen(input), 0x1e, |
| ip, port, -1, &payload_type, ensure_mode_set); |
| |
| if (payload_type != -1) { |
| fprintf(stderr, "Found media payload type %d in SDP data\n", |
| payload_type); |
| if (payload_type != expected_payload_type) { |
| printf("Wrong payload type %d (expected %d)\n", |
| payload_type, expected_payload_type); |
| abort(); |
| } |
| } |
| |
| if (msgb_l2len(output) != strlen(patc)) { |
| printf("Wrong sizes for test: %d %u != %zu != %zu\n", i, msgb_l2len(output), strlen(patc), strlen(orig)); |
| printf("String '%s' vs '%s'\n", (const char *) output->l2h, patc); |
| abort(); |
| } |
| |
| if (memcmp(output->l2h, patc, msgb_l2len(output)) != 0) { |
| printf("Broken on %d msg: '%s'\n", i, (const char *) output->l2h); |
| abort(); |
| } |
| |
| msgb_free(output); |
| free(input); |
| } |
| } |
| |
| static void test_mgcp_parse(void) |
| { |
| int code, ci; |
| char transaction[60]; |
| |
| printf("Testing MGCP response parsing.\n"); |
| |
| if (bsc_mgcp_parse_response(crcx_resp, &code, transaction) != 0) { |
| printf("Failed to parse CRCX resp.\n"); |
| abort(); |
| } |
| |
| if (code != 200) { |
| printf("Failed to parse the CODE properly. Got: %d\n", code); |
| abort(); |
| } |
| |
| if (strcmp(transaction, "23265295") != 0) { |
| printf("Failed to parse transaction id: '%s'\n", transaction); |
| abort(); |
| } |
| |
| ci = bsc_mgcp_extract_ci(crcx_resp); |
| if (ci != 1) { |
| printf("Failed to parse the CI. Got: %d\n", ci); |
| abort(); |
| } |
| } |
| |
| struct cr_filter { |
| const uint8_t *data; |
| int length; |
| int result; |
| int contype; |
| |
| const char *bsc_imsi_allow; |
| const char *bsc_imsi_deny; |
| const char *nat_imsi_deny; |
| int nat_cm_reject_cause; |
| int nat_lu_reject_cause; |
| int bsc_cm_reject_cause; |
| int bsc_lu_reject_cause; |
| int want_cm_reject_cause; |
| int want_lu_reject_cause; |
| }; |
| |
| static struct cr_filter cr_filter[] = { |
| { |
| .data = bssmap_cr, |
| .length = sizeof(bssmap_cr), |
| .result = 1, |
| .contype = FLT_CON_TYPE_CM_SERV_REQ, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = 1, |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| .data = pag_resp, |
| .length = sizeof(pag_resp), |
| .result = 1, |
| .contype = FLT_CON_TYPE_PAG_RESP, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* nat deny is before blank/null BSC */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = -3, |
| .nat_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* BSC allow is before NAT deny */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = 1, |
| .nat_imsi_deny = "[0-9]*", |
| .bsc_imsi_allow = "2440[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* BSC allow is before NAT deny */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = 1, |
| .bsc_imsi_allow = "[0-9]*", |
| .nat_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* filter as deny is first */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = 1, |
| .bsc_imsi_deny = "[0-9]*", |
| .bsc_imsi_allow = "[0-9]*", |
| .nat_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* deny by nat rule */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = -3, |
| .bsc_imsi_deny = "000[0-9]*", |
| .nat_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* deny by nat rule */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = -3, |
| .bsc_imsi_deny = "000[0-9]*", |
| .nat_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = 0x23, |
| .nat_lu_reject_cause = 0x42, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = 0x42, |
| .want_cm_reject_cause = 0x23, |
| }, |
| { |
| /* deny by bsc rule */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = -2, |
| .bsc_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .want_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| }, |
| { |
| /* deny by bsc rule */ |
| .data = bss_lu, |
| .length = sizeof(bss_lu), |
| .result = -2, |
| .bsc_imsi_deny = "[0-9]*", |
| .contype = FLT_CON_TYPE_LU, |
| .nat_cm_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .nat_lu_reject_cause = GSM48_REJECT_PLMN_NOT_ALLOWED, |
| .bsc_cm_reject_cause = 0x42, |
| .bsc_lu_reject_cause = 0x23, |
| .want_lu_reject_cause = 0x23, |
| .want_cm_reject_cause = 0x42, |
| }, |
| }; |
| |
| static void test_cr_filter() |
| { |
| int i, res, contype; |
| struct msgb *msg = msgb_alloc(4096, "test_cr_filter"); |
| struct bsc_nat_parsed *parsed; |
| struct bsc_msg_acc_lst *nat_lst, *bsc_lst; |
| struct bsc_msg_acc_lst_entry *nat_entry, *bsc_entry; |
| struct bsc_filter_reject_cause cause; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| struct bsc_connection *bsc = bsc_connection_alloc(nat); |
| bsc->cfg = bsc_config_alloc(nat, "foo", 0); |
| bsc_config_add_lac(bsc->cfg, 1234); |
| bsc->cfg->acc_lst_name = "bsc"; |
| nat->acc_lst_name = "nat"; |
| |
| nat_lst = bsc_msg_acc_lst_get(nat, &nat->access_lists, "nat"); |
| bsc_lst = bsc_msg_acc_lst_get(nat, &nat->access_lists, "bsc"); |
| |
| bsc_entry = bsc_msg_acc_lst_entry_create(bsc_lst); |
| nat_entry = bsc_msg_acc_lst_entry_create(nat_lst); |
| |
| /* test the default value as we are going to overwrite it */ |
| OSMO_ASSERT(bsc_entry->cm_reject_cause == GSM48_REJECT_PLMN_NOT_ALLOWED); |
| OSMO_ASSERT(bsc_entry->lu_reject_cause == GSM48_REJECT_PLMN_NOT_ALLOWED); |
| |
| for (i = 0; i < ARRAY_SIZE(cr_filter); ++i) { |
| char *imsi; |
| msgb_reset(msg); |
| copy_to_msg(msg, cr_filter[i].data, cr_filter[i].length); |
| |
| bsc_entry->cm_reject_cause = cr_filter[i].bsc_cm_reject_cause; |
| bsc_entry->lu_reject_cause = cr_filter[i].bsc_lu_reject_cause; |
| nat_entry->cm_reject_cause = cr_filter[i].nat_cm_reject_cause; |
| nat_entry->lu_reject_cause = cr_filter[i].nat_lu_reject_cause; |
| |
| if (gsm_parse_reg(nat_entry, &nat_entry->imsi_deny_re, &nat_entry->imsi_deny, |
| cr_filter[i].nat_imsi_deny ? 1 : 0, |
| &cr_filter[i].nat_imsi_deny) != 0) |
| abort(); |
| if (gsm_parse_reg(bsc_entry, &bsc_entry->imsi_allow_re, &bsc_entry->imsi_allow, |
| cr_filter[i].bsc_imsi_allow ? 1 : 0, |
| &cr_filter[i].bsc_imsi_allow) != 0) |
| abort(); |
| if (gsm_parse_reg(bsc_entry, &bsc_entry->imsi_deny_re, &bsc_entry->imsi_deny, |
| cr_filter[i].bsc_imsi_deny ? 1 : 0, |
| &cr_filter[i].bsc_imsi_deny) != 0) |
| abort(); |
| |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Failed to parse the message\n"); |
| abort(); |
| } |
| |
| memset(&cause, 0, sizeof(cause)); |
| res = bsc_nat_filter_sccp_cr(bsc, msg, parsed, &contype, &imsi, &cause); |
| if (res != cr_filter[i].result) { |
| printf("FAIL: Wrong result %d for test %d.\n", res, i); |
| abort(); |
| } |
| |
| |
| OSMO_ASSERT(cause.cm_reject_cause == cr_filter[i].want_cm_reject_cause); |
| OSMO_ASSERT(cause.lu_reject_cause == cr_filter[i].want_lu_reject_cause); |
| |
| if (contype != cr_filter[i].contype) { |
| printf("FAIL: Wrong contype %d for test %d.\n", res, contype); |
| abort(); |
| } |
| |
| talloc_steal(parsed, imsi); |
| talloc_free(parsed); |
| } |
| |
| msgb_free(msg); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_dt_filter() |
| { |
| int i; |
| struct msgb *msg = msgb_alloc(4096, "test_dt_filter"); |
| struct bsc_nat_parsed *parsed; |
| struct bsc_filter_reject_cause cause; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| struct bsc_connection *bsc = bsc_connection_alloc(nat); |
| struct nat_sccp_connection *con = talloc_zero(0, struct nat_sccp_connection); |
| |
| bsc->cfg = bsc_config_alloc(nat, "foo", 0); |
| bsc_config_add_lac(bsc->cfg, 23); |
| con->bsc = bsc; |
| |
| msgb_reset(msg); |
| copy_to_msg(msg, id_resp, ARRAY_SIZE(id_resp)); |
| |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| if (parsed->bssap != BSSAP_MSG_DTAP) { |
| printf("FAIL: It should be dtap\n"); |
| abort(); |
| } |
| |
| /* gsm_type is actually the size of the dtap */ |
| if (parsed->gsm_type < msgb_l3len(msg) - 3) { |
| printf("FAIL: Not enough space for the content\n"); |
| abort(); |
| } |
| |
| memset(&cause, 0, sizeof(cause)); |
| if (bsc_nat_filter_dt(bsc, msg, con, parsed, &cause) != 1) { |
| printf("FAIL: Should have passed..\n"); |
| abort(); |
| } |
| |
| /* just some basic length checking... */ |
| for (i = ARRAY_SIZE(id_resp); i >= 0; --i) { |
| msgb_reset(msg); |
| copy_to_msg(msg, id_resp, ARRAY_SIZE(id_resp)); |
| |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) |
| continue; |
| |
| con->filter_state.imsi_checked = 0; |
| memset(&cause, 0, sizeof(cause)); |
| bsc_nat_filter_dt(bsc, msg, con, parsed, &cause); |
| } |
| |
| msgb_free(msg); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_setup_rewrite() |
| { |
| struct msgb *msg = msgb_alloc(4096, "test_dt_filter"); |
| struct msgb *out; |
| struct bsc_nat_parsed *parsed; |
| const char *imsi = "27408000001234"; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| |
| /* a fake list */ |
| struct osmo_config_list entries; |
| struct osmo_config_entry entry; |
| |
| INIT_LLIST_HEAD(&entries.entry); |
| entry.mcc = "274"; |
| entry.mnc = "08"; |
| entry.option = "^0([1-9])"; |
| entry.text = "0049"; |
| llist_add_tail(&entry.list, &entries.entry); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| |
| /* verify that nothing changed */ |
| msgb_reset(msg); |
| copy_to_msg(msg, cc_setup_international, ARRAY_SIZE(cc_setup_international)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (msg != out) { |
| printf("FAIL: The message should not have been changed\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_international, ARRAY_SIZE(cc_setup_international)); |
| talloc_free(parsed); |
| |
| /* verify that something in the message changes */ |
| msgb_reset(msg); |
| copy_to_msg(msg, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created.\n"); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national_patched, ARRAY_SIZE(cc_setup_national_patched)); |
| msgb_free(out); |
| |
| /* Make sure that a wildcard is matching */ |
| entry.mnc = "*"; |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| msg = msgb_alloc(4096, "test_dt_filter"); |
| copy_to_msg(msg, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created.\n"); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national_patched, ARRAY_SIZE(cc_setup_national_patched)); |
| msgb_free(out); |
| |
| /* Make sure that a wildcard is matching */ |
| entry.mnc = "09"; |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| msg = msgb_alloc(4096, "test_dt_filter"); |
| copy_to_msg(msg, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out != msg) { |
| printf("FAIL: The message should be unchanged.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| msgb_free(out); |
| |
| /* Now see what happens to an international number */ |
| entry.mnc = "*"; |
| entry.option = "^\\+[0-9][0-9]([1-9])"; |
| entry.text = "0036"; |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| msg = msgb_alloc(4096, "test_dt_filter"); |
| copy_to_msg(msg, cc_setup_national_patched, ARRAY_SIZE(cc_setup_national_patched)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp %d\n", __LINE__); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created %d.\n", __LINE__); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed %d\n", __LINE__); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national_patched_patched, |
| ARRAY_SIZE(cc_setup_national_patched_patched)); |
| msgb_free(out); |
| |
| /* go from international back to national */ |
| entry.mnc = "*"; |
| entry.option = "^\\+([0-9])"; |
| entry.text = "36"; |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| msg = msgb_alloc(4096, "test_dt_filter"); |
| copy_to_msg(msg, cc_setup_national_patched, ARRAY_SIZE(cc_setup_national_patched)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp %d\n", __LINE__); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created %d.\n", __LINE__); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed %d\n", __LINE__); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national_again, |
| ARRAY_SIZE(cc_setup_national_again)); |
| msgb_free(out); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, NULL); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_setup_rewrite_prefix(void) |
| { |
| struct msgb *msg = msgb_alloc(4096, "test_dt_filter"); |
| struct msgb *out; |
| struct bsc_nat_parsed *parsed; |
| const char *imsi = "27408000001234"; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| |
| /* a fake list */ |
| struct osmo_config_list entries; |
| struct osmo_config_entry entry; |
| |
| INIT_LLIST_HEAD(&entries.entry); |
| entry.mcc = "274"; |
| entry.mnc = "08"; |
| entry.option = "^0([1-9])"; |
| entry.text = "prefix_lookup"; |
| llist_add_tail(&entry.list, &entries.entry); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| |
| nat->num_rewr_trie = nat_rewrite_parse(nat, "prefixes.csv"); |
| |
| msgb_reset(msg); |
| copy_to_msg(msg, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created.\n"); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national_patched, ARRAY_SIZE(cc_setup_national_patched)); |
| msgb_free(out); |
| |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, NULL); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_setup_rewrite_post(void) |
| { |
| struct msgb *msg = msgb_alloc(4096, "test_dt_filter"); |
| struct msgb *out; |
| struct bsc_nat_parsed *parsed; |
| const char *imsi = "27408000001234"; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| |
| /* a fake list */ |
| struct osmo_config_list entries; |
| struct osmo_config_entry entry; |
| struct osmo_config_list entries_post; |
| struct osmo_config_entry entry_post; |
| |
| INIT_LLIST_HEAD(&entries.entry); |
| entry.mcc = "274"; |
| entry.mnc = "08"; |
| entry.option = "^0([1-9])"; |
| entry.text = "0049"; |
| llist_add_tail(&entry.list, &entries.entry); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr, &entries); |
| |
| /* attempt to undo the previous one */ |
| INIT_LLIST_HEAD(&entries_post.entry); |
| entry_post.mcc = "274"; |
| entry_post.mnc = "08"; |
| entry_post.option = "^\\+49([1-9])"; |
| entry_post.text = "prefix_lookup"; |
| llist_add_tail(&entry_post.list, &entries_post.entry); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->num_rewr_post, &entries_post); |
| |
| nat->num_rewr_trie = nat_rewrite_parse(nat, "prefixes.csv"); |
| |
| msgb_reset(msg); |
| copy_to_msg(msg, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse ID resp\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (!out) { |
| printf("FAIL: A new message should be created.\n"); |
| abort(); |
| } |
| |
| if (msg == out) { |
| printf("FAIL: The message should have changed\n"); |
| abort(); |
| } |
| |
| verify_msg(out, cc_setup_national, ARRAY_SIZE(cc_setup_national)); |
| msgb_free(out); |
| |
| bsc_nat_free(nat); |
| } |
| |
| static void test_sms_smsc_rewrite() |
| { |
| struct msgb *msg = msgb_alloc(4096, "SMSC rewrite"), *out; |
| struct bsc_nat_parsed *parsed; |
| const char *imsi = "515039900406700"; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| |
| /* a fake list */ |
| struct osmo_config_list smsc_entries, dest_entries, clear_entries; |
| struct osmo_config_entry smsc_entry, dest_entry, clear_entry; |
| |
| INIT_LLIST_HEAD(&smsc_entries.entry); |
| INIT_LLIST_HEAD(&dest_entries.entry); |
| INIT_LLIST_HEAD(&clear_entries.entry); |
| smsc_entry.mcc = "^515039"; |
| smsc_entry.option = "639180000105()"; |
| smsc_entry.text = "6666666666667"; |
| llist_add_tail(&smsc_entry.list, &smsc_entries.entry); |
| dest_entry.mcc = "515"; |
| dest_entry.mnc = "03"; |
| dest_entry.option = "^0049"; |
| dest_entry.text = ""; |
| llist_add_tail(&dest_entry.list, &dest_entries.entry); |
| clear_entry.mcc = "^515039"; |
| clear_entry.option = "^0049"; |
| clear_entry.text = ""; |
| llist_add_tail(&clear_entry.list, &clear_entries.entry); |
| |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->smsc_rewr, &smsc_entries); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->tpdest_match, &dest_entries); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_clear_tp_srr, &clear_entries); |
| |
| printf("Testing SMSC rewriting.\n"); |
| |
| /* |
| * Check if the SMSC address is changed |
| */ |
| copy_to_msg(msg, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse SMS\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out == msg) { |
| printf("FAIL: This should have changed.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, smsc_rewrite_patched, ARRAY_SIZE(smsc_rewrite_patched)); |
| msgb_free(out); |
| |
| /* clear out the filter for SMSC */ |
| printf("Attempting to only rewrite the HDR\n"); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->smsc_rewr, NULL); |
| msg = msgb_alloc(4096, "SMSC rewrite"); |
| copy_to_msg(msg, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse SMS\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out == msg) { |
| printf("FAIL: This should have changed.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, smsc_rewrite_patched_hdr, ARRAY_SIZE(smsc_rewrite_patched_hdr)); |
| msgb_free(out); |
| |
| /* clear out the next filter */ |
| printf("Attempting to change nothing.\n"); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_clear_tp_srr, NULL); |
| msg = msgb_alloc(4096, "SMSC rewrite"); |
| copy_to_msg(msg, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse SMS\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out != msg) { |
| printf("FAIL: This should not have changed.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| msgb_free(out); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_sms_number_rewrite(void) |
| { |
| struct msgb *msg, *out; |
| struct bsc_nat_parsed *parsed; |
| const char *imsi = "515039900406700"; |
| |
| struct bsc_nat *nat = bsc_nat_alloc(); |
| |
| /* a fake list */ |
| struct osmo_config_list num_entries, clear_entries; |
| struct osmo_config_entry num_entry, clear_entry; |
| |
| INIT_LLIST_HEAD(&num_entries.entry); |
| num_entry.mcc = "^515039"; |
| num_entry.option = "^0049()"; |
| num_entry.text = "0032"; |
| llist_add_tail(&num_entry.list, &num_entries.entry); |
| |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_num_rewr, &num_entries); |
| |
| printf("Testing SMS TP-DA rewriting.\n"); |
| |
| /* |
| * Check if the SMSC address is changed |
| */ |
| msg = msgb_alloc(4096, "SMSC rewrite"); |
| copy_to_msg(msg, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse SMS\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out == msg) { |
| printf("FAIL: This should have changed.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, smsc_rewrite_num_patched, |
| ARRAY_SIZE(smsc_rewrite_num_patched)); |
| msgb_free(out); |
| |
| /* |
| * Now with TP-SRR rewriting enabled |
| */ |
| INIT_LLIST_HEAD(&clear_entries.entry); |
| clear_entry.mcc = "^515039"; |
| clear_entry.option = ""; |
| clear_entry.text = ""; |
| llist_add_tail(&clear_entry.list, &clear_entries.entry); |
| bsc_nat_num_rewr_entry_adapt(nat, &nat->sms_clear_tp_srr, &clear_entries); |
| |
| msg = msgb_alloc(4096, "SMSC rewrite"); |
| copy_to_msg(msg, smsc_rewrite, ARRAY_SIZE(smsc_rewrite)); |
| parsed = bsc_nat_parse(msg); |
| if (!parsed) { |
| printf("FAIL: Could not parse SMS\n"); |
| abort(); |
| } |
| |
| out = bsc_nat_rewrite_msg(nat, msg, parsed, imsi); |
| if (out == msg) { |
| printf("FAIL: This should have changed.\n"); |
| abort(); |
| } |
| |
| verify_msg(out, smsc_rewrite_num_patched_tp_srr, |
| ARRAY_SIZE(smsc_rewrite_num_patched_tp_srr)); |
| msgb_free(out); |
| bsc_nat_free(nat); |
| } |
| |
| static void test_barr_list_parsing(void) |
| { |
| int rc; |
| int cm, lu; |
| struct rb_node *node; |
| struct rb_root root = RB_ROOT; |
| struct osmo_config_list *lst = osmo_config_list_parse(NULL, "barr.cfg"); |
| if (lst == NULL) |
| abort(); |
| |
| rc = bsc_filter_barr_adapt(NULL, &root, lst); |
| if (rc != 0) |
| abort(); |
| talloc_free(lst); |
| |
| |
| for (node = rb_first(&root); node; node = rb_next(node)) { |
| struct bsc_filter_barr_entry *entry; |
| entry = rb_entry(node, struct bsc_filter_barr_entry, node); |
| printf("IMSI: %s CM: %d LU: %d\n", entry->imsi, |
| entry->cm_reject_cause, entry->lu_reject_cause); |
| } |
| |
| /* do the look up now.. */ |
| rc = bsc_filter_barr_find(&root, "12123119", &cm, &lu); |
| if (!rc) { |
| printf("Failed to find the IMSI.\n"); |
| abort(); |
| } |
| |
| if (cm != 3 || lu != 4) { |
| printf("Found CM(%d) and LU(%d)\n", cm, lu); |
| abort(); |
| } |
| |
| /* empty and check that it is empty */ |
| bsc_filter_barr_adapt(NULL, &root, NULL); |
| if (!RB_EMPTY_ROOT(&root)) { |
| printf("Failed to empty the list.\n"); |
| abort(); |
| } |
| |
| /* check that dup results in an error */ |
| lst = osmo_config_list_parse(NULL, "barr_dup.cfg"); |
| if (lst == NULL) { |
| printf("Failed to parse list with dups\n"); |
| abort(); |
| } |
| |
| rc = bsc_filter_barr_adapt(NULL, &root, lst); |
| if (rc != -1) { |
| printf("It should have failed due dup\n"); |
| abort(); |
| } |
| talloc_free(lst); |
| |
| /* dump for reference */ |
| for (node = rb_first(&root); node; node = rb_next(node)) { |
| struct bsc_filter_barr_entry *entry; |
| entry = rb_entry(node, struct bsc_filter_barr_entry, node); |
| printf("IMSI: %s CM: %d LU: %d\n", entry->imsi, |
| entry->cm_reject_cause, entry->lu_reject_cause); |
| |
| } |
| rc = bsc_filter_barr_adapt(NULL, &root, NULL); |
| } |
| |
| static void test_nat_extract_lac() |
| { |
| int res; |
| struct bsc_connection *bsc; |
| struct bsc_nat *nat; |
| struct nat_sccp_connection con; |
| struct bsc_nat_parsed *parsed; |
| struct msgb *msg = msgb_alloc(4096, "test-message"); |
| |
| printf("Testing LAC extraction from SCCP CR\n"); |
| |
| /* initialize the testcase */ |
| nat = bsc_nat_alloc(); |
| bsc = bsc_connection_alloc(nat); |
| bsc->cfg = bsc_config_alloc(nat, "foo", 0); |
| |
| memset(&con, 0, sizeof(con)); |
| con.bsc = bsc; |
| |
| /* create the SCCP CR */ |
| msg->l2h = msgb_put(msg, ARRAY_SIZE(bssmap_cr)); |
| memcpy(msg->l2h, bssmap_cr, ARRAY_SIZE(bssmap_cr)); |
| |
| /* parse it and pass it on */ |
| parsed = bsc_nat_parse(msg); |
| res = bsc_nat_extract_lac(bsc, &con, parsed, msg); |
| OSMO_ASSERT(res == 0); |
| |
| /* verify the LAC */ |
| OSMO_ASSERT(con.lac == 8210); |
| OSMO_ASSERT(con.ci == 50000); |
| |
| bsc_nat_free(nat); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| sccp_set_log_area(DSCCP); |
| osmo_init_logging(&log_info); |
| |
| test_filter(); |
| test_contrack(); |
| test_paging(); |
| test_mgcp_ass_tracking(); |
| test_mgcp_find(); |
| test_mgcp_rewrite(); |
| test_mgcp_parse(); |
| test_cr_filter(); |
| test_dt_filter(); |
| test_setup_rewrite(); |
| test_setup_rewrite_prefix(); |
| test_setup_rewrite_post(); |
| test_sms_smsc_rewrite(); |
| test_sms_number_rewrite(); |
| test_mgcp_allocations(); |
| test_barr_list_parsing(); |
| test_nat_extract_lac(); |
| |
| printf("Testing execution completed.\n"); |
| return 0; |
| } |
| |
| /* stub */ |
| void bsc_nat_send_mgcp_to_msc(struct bsc_nat *nat, struct msgb *msg) |
| { |
| abort(); |
| } |