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-rw-r--r--tests/bsc-nat/bsc_nat_test.c1016
1 files changed, 1016 insertions, 0 deletions
diff --git a/tests/bsc-nat/bsc_nat_test.c b/tests/bsc-nat/bsc_nat_test.c
new file mode 100644
index 00000000..504b6919
--- /dev/null
+++ b/tests/bsc-nat/bsc_nat_test.c
@@ -0,0 +1,1016 @@
+/*
+ * BSC NAT Message filtering
+ *
+ * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010 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 <osmocore/talloc.h>
+
+#include <osmocom/sccp/sccp.h>
+#include <osmocore/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 */
+ fprintf(stderr, "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");
+
+ fprintf(stderr, "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) {
+ fprintf(stderr, "FAIL: Failed to parse the message\n");
+ continue;
+ }
+
+ result = bsc_nat_filter_ipa(results[i].dir, msg, parsed);
+ if (result != results[i].result) {
+ fprintf(stderr, "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));
+}
+
+#define VERIFY(con_found, con, msg, ver, str) \
+ if (!con_found || con_found->bsc != con) { \
+ fprintf(stderr, "Failed to find the con: %p\n", con_found); \
+ abort(); \
+ } \
+ if (memcmp(msg->data, ver, sizeof(ver)) != 0) { \
+ fprintf(stderr, "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 sccp_connections *con_found;
+ struct sccp_connections *rc_con;
+ struct bsc_nat_parsed *parsed;
+ struct msgb *msg;
+
+ fprintf(stderr, "Testing connection tracking.\n");
+ nat = bsc_nat_alloc();
+ con = bsc_connection_alloc(nat);
+ con->cfg = bsc_config_alloc(nat, "foo");
+ 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) {
+ fprintf(stderr, "Con should not exist %p\n", con_found);
+ abort();
+ }
+ rc_con = create_sccp_src_ref(con, parsed);
+ if (!rc_con) {
+ fprintf(stderr, "Failed to create a ref\n");
+ abort();
+ }
+ con_found = patch_sccp_src_ref_to_msc(msg, parsed, con);
+ if (!con_found || con_found->bsc != con) {
+ fprintf(stderr, "Failed to find the con: %p\n", con_found);
+ abort();
+ }
+ if (con_found != rc_con) {
+ fprintf(stderr, "Failed to find the right connection.\n");
+ abort();
+ }
+ if (memcmp(msg->data, bsc_cr_patched, sizeof(bsc_cr_patched)) != 0) {
+ fprintf(stderr, "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) {
+ fprintf(stderr, "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 || con_found->bsc != con) {
+ fprintf(stderr, "Failed to find the con: %p\n", con_found);
+ abort();
+ }
+ if (memcmp(msg->data, bsc_rlc_patched, sizeof(bsc_rlc_patched)) != 0) {
+ fprintf(stderr, "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) {
+ fprintf(stderr, "Con should be gone. %p\n", con_found);
+ abort();
+ }
+ talloc_free(parsed);
+
+
+ bsc_config_free(con->cfg);
+ talloc_free(nat);
+ msgb_free(msg);
+}
+
+static void test_paging(void)
+{
+ int lac;
+ struct bsc_nat *nat;
+ struct bsc_connection *con;
+ struct bsc_nat_parsed *parsed;
+ struct bsc_config *cfg;
+ struct msgb *msg;
+
+ fprintf(stderr, "Testing paging by lac.\n");
+
+ nat = bsc_nat_alloc();
+ con = bsc_connection_alloc(nat);
+ cfg = bsc_config_alloc(nat, "unknown");
+ con->cfg = cfg;
+ bsc_config_add_lac(cfg, 23);
+ con->authenticated = 1;
+ llist_add(&con->list_entry, &nat->bsc_connections);
+ msg = msgb_alloc(4096, "test");
+
+ /* Test completely bad input */
+ copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
+ if (bsc_nat_find_bsc(nat, msg, &lac) != 0) {
+ fprintf(stderr, "Should have not found anything.\n");
+ abort();
+ }
+
+ /* Test it by not finding it */
+ copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
+ parsed = bsc_nat_parse(msg);
+ if (bsc_nat_find_bsc(nat, msg, &lac) != 0) {
+ fprintf(stderr, "Should have not found aynthing.\n");
+ abort();
+ }
+ talloc_free(parsed);
+
+ /* Test by finding it */
+ bsc_config_del_lac(cfg, 23);
+ bsc_config_add_lac(cfg, 8213);
+ copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
+ parsed = bsc_nat_parse(msg);
+ if (bsc_nat_find_bsc(nat, msg, &lac) != con) {
+ fprintf(stderr, "Should have found it.\n");
+ abort();
+ }
+ talloc_free(parsed);
+}
+
+static void test_mgcp_allocations(void)
+{
+#if 0
+ struct bsc_connection *bsc;
+ struct bsc_nat *nat;
+ struct sccp_connections con;
+ int i, j, multiplex;
+
+ fprintf(stderr, "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");
+ 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) {
+ fprintf(stderr, "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 sccp_connections con;
+ struct bsc_nat_parsed *parsed;
+ struct msgb *msg;
+
+ fprintf(stderr, "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;
+
+ bsc = bsc_connection_alloc(nat);
+ bsc->cfg = bsc_config_alloc(nat, "foo");
+ 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) {
+ fprintf(stderr, "Input is not as expected.. %s 0x%x\n",
+ hexdump(msg->l2h, msgb_l2len(msg)),
+ msg->l2h[17]);
+ abort();
+ }
+
+ if (bsc_mgcp_assign_patch(&con, msg) != 0) {
+ fprintf(stderr, "Failed to handle assignment.\n");
+ abort();
+ }
+
+ if (con.msc_endp != 1) {
+ fprintf(stderr, "Timeslot should be 1.\n");
+ abort();
+ }
+
+ if (con.bsc_endp != 0x1) {
+ fprintf(stderr, "Assigned timeslot should have been 1.\n");
+ abort();
+ }
+ if (con.bsc->_endpoint_status[0x1] != 1) {
+ fprintf(stderr, "The status on the BSC is wrong.\n");
+ abort();
+ }
+
+ int multiplex, timeslot;
+ mgcp_endpoint_to_timeslot(0x1, &multiplex, &timeslot);
+
+ uint16_t cic = htons(timeslot & 0x1f);
+ if (memcmp(&cic, &msg->l2h[16], sizeof(cic)) != 0) {
+ fprintf(stderr, "Message was not patched properly\n");
+ fprintf(stderr, "data cic: 0x%x %s\n", cic, 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) {
+ fprintf(stderr, "Clearing should remove the mapping.\n");
+ abort();
+ }
+
+ bsc_config_free(bsc->cfg);
+ talloc_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 sccp_connections *sccp_con;
+
+ fprintf(stderr, "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 sccp_connections);
+ 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) {
+ fprintf(stderr, "Found the wrong connection.\n");
+ abort();
+ }
+
+ if (bsc_mgcp_find_con(nat, 12) != sccp_con) {
+ fprintf(stderr, "Didn't find the connection\n");
+ abort();
+ }
+
+ /* free everything */
+ talloc_free(nat);
+}
+
+static void test_mgcp_rewrite(void)
+{
+ int i;
+ struct msgb *output;
+ fprintf(stderr, "Test 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;
+
+ char *input = strdup(orig);
+
+ output = bsc_mgcp_rewrite(input, strlen(input), 0x1e, ip, port);
+ if (msgb_l2len(output) != strlen(patc)) {
+ fprintf(stderr, "Wrong sizes for test: %d %d != %d != %d\n", i, msgb_l2len(output), strlen(patc), strlen(orig));
+ fprintf(stderr, "String '%s' vs '%s'\n", (const char *) output->l2h, patc);
+ abort();
+ }
+
+ if (memcmp(output->l2h, patc, msgb_l2len(output)) != 0) {
+ fprintf(stderr, "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];
+
+ fprintf(stderr, "Test MGCP response parsing.\n");
+
+ if (bsc_mgcp_parse_response(crcx_resp, &code, transaction) != 0) {
+ fprintf(stderr, "Failed to parse CRCX resp.\n");
+ abort();
+ }
+
+ if (code != 200) {
+ fprintf(stderr, "Failed to parse the CODE properly. Got: %d\n", code);
+ abort();
+ }
+
+ if (strcmp(transaction, "23265295") != 0) {
+ fprintf(stderr, "Failed to parse transaction id: '%s'\n", transaction);
+ abort();
+ }
+
+ ci = bsc_mgcp_extract_ci(crcx_resp);
+ if (ci != 1) {
+ fprintf(stderr, "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;
+};
+
+static struct cr_filter cr_filter[] = {
+ {
+ .data = bssmap_cr,
+ .length = sizeof(bssmap_cr),
+ .result = 1,
+ .contype = NAT_CON_TYPE_CM_SERV_REQ,
+ },
+ {
+ .data = bss_lu,
+ .length = sizeof(bss_lu),
+ .result = 1,
+ .contype = NAT_CON_TYPE_LU,
+ },
+ {
+ .data = pag_resp,
+ .length = sizeof(pag_resp),
+ .result = 1,
+ .contype = NAT_CON_TYPE_PAG_RESP,
+ },
+ {
+ /* nat deny is before blank/null BSC */
+ .data = bss_lu,
+ .length = sizeof(bss_lu),
+ .result = -3,
+ .nat_imsi_deny = "[0-9]*",
+ .contype = NAT_CON_TYPE_LU,
+ },
+ {
+ /* 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 = NAT_CON_TYPE_LU,
+ },
+ {
+ /* 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 = NAT_CON_TYPE_LU,
+ },
+ {
+ /* 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 = NAT_CON_TYPE_LU,
+ },
+ {
+ /* 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 = NAT_CON_TYPE_LU,
+ },
+ {
+ /* deny by bsc rule */
+ .data = bss_lu,
+ .length = sizeof(bss_lu),
+ .result = -2,
+ .bsc_imsi_deny = "[0-9]*",
+ .contype = NAT_CON_TYPE_LU,
+ },
+
+};
+
+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_nat_acc_lst *nat_lst, *bsc_lst;
+ struct bsc_nat_acc_lst_entry *nat_entry, *bsc_entry;
+
+ struct bsc_nat *nat = bsc_nat_alloc();
+ struct bsc_connection *bsc = bsc_connection_alloc(nat);
+ bsc->cfg = bsc_config_alloc(nat, "foo");
+ bsc_config_add_lac(bsc->cfg, 1234);
+ bsc->cfg->acc_lst_name = "bsc";
+ nat->acc_lst_name = "nat";
+
+ nat_lst = bsc_nat_acc_lst_get(nat, "nat");
+ bsc_lst = bsc_nat_acc_lst_get(nat, "bsc");
+
+ bsc_entry = bsc_nat_acc_lst_entry_create(bsc_lst);
+ nat_entry = bsc_nat_acc_lst_entry_create(nat_lst);
+
+ 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);
+
+ nat_lst = bsc_nat_acc_lst_get(nat, "nat");
+ bsc_lst = bsc_nat_acc_lst_get(nat, "bsc");
+
+ bsc_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);
+ bsc_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);
+ bsc_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);
+
+ parsed = bsc_nat_parse(msg);
+ if (!parsed) {
+ fprintf(stderr, "FAIL: Failed to parse the message\n");
+ abort();
+ }
+
+ res = bsc_nat_filter_sccp_cr(bsc, msg, parsed, &contype, &imsi);
+ if (res != cr_filter[i].result) {
+ fprintf(stderr, "FAIL: Wrong result %d for test %d.\n", res, i);
+ abort();
+ }
+
+ if (contype != cr_filter[i].contype) {
+ fprintf(stderr, "FAIL: Wrong contype %d for test %d.\n", res, contype);
+ abort();
+ }
+
+ talloc_steal(parsed, imsi);
+ talloc_free(parsed);
+ }
+
+ msgb_free(msg);
+}
+
+static void test_dt_filter()
+{
+ int i;
+ struct msgb *msg = msgb_alloc(4096, "test_dt_filter");
+ struct bsc_nat_parsed *parsed;
+
+ struct bsc_nat *nat = bsc_nat_alloc();
+ struct bsc_connection *bsc = bsc_connection_alloc(nat);
+ struct sccp_connections *con = talloc_zero(0, struct sccp_connections);
+
+ bsc->cfg = bsc_config_alloc(nat, "foo");
+ 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) {
+ fprintf(stderr, "FAIL: Could not parse ID resp\n");
+ abort();
+ }
+
+ if (parsed->bssap != BSSAP_MSG_DTAP) {
+ fprintf(stderr, "FAIL: It should be dtap\n");
+ abort();
+ }
+
+ /* gsm_type is actually the size of the dtap */
+ if (parsed->gsm_type < msgb_l3len(msg) - 3) {
+ fprintf(stderr, "FAIL: Not enough space for the content\n");
+ abort();
+ }
+
+ if (bsc_nat_filter_dt(bsc, msg, con, parsed) != 1) {
+ fprintf(stderr, "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->imsi_checked = 0;
+ bsc_nat_filter_dt(bsc, msg, con, parsed);
+ }
+}
+
+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 msg_entries entries;
+ struct msg_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);
+ 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) {
+ fprintf(stderr, "FAIL: Could not parse ID resp\n");
+ abort();
+ }
+
+ out = bsc_nat_rewrite_setup(nat, msg, parsed, imsi);
+ if (msg != out) {
+ fprintf(stderr, "FAIL: The message should not have been changed\n");
+ abort();
+ }
+
+ if (out->len != ARRAY_SIZE(cc_setup_international)) {
+ fprintf(stderr, "FAIL: Length of message changed\n");
+ abort();
+ }
+
+ if (memcmp(out->data, cc_setup_international, out->len) != 0) {
+ fprintf(stderr, "FAIL: Content modified..\n");
+ abort();
+ }
+ 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) {
+ fprintf(stderr, "FAIL: Could not parse ID resp\n");
+ abort();
+ }
+
+ out = bsc_nat_rewrite_setup(nat, msg, parsed, imsi);
+ if (!out) {
+ fprintf(stderr, "FAIL: A new message should be created.\n");
+ abort();
+ }
+
+ if (msg == out) {
+ fprintf(stderr, "FAIL: The message should have changed\n");
+ abort();
+ }
+
+ if (out->len != ARRAY_SIZE(cc_setup_national_patched)) {
+ fprintf(stderr, "FAIL: Length is wrong.\n");
+ abort();
+ }
+
+ if (memcmp(cc_setup_national_patched, out->data, out->len) != 0) {
+ fprintf(stderr, "FAIL: Data is wrong.\n");
+ fprintf(stderr, "Data was: %s\n", hexdump(out->data, out->len));
+ abort();
+ }
+
+ msgb_free(out);
+
+ /* Make sure that a wildcard is matching */
+ entry.mnc = "*";
+ 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) {
+ fprintf(stderr, "FAIL: Could not parse ID resp\n");
+ abort();
+ }
+
+ out = bsc_nat_rewrite_setup(nat, msg, parsed, imsi);
+ if (!out) {
+ fprintf(stderr, "FAIL: A new message should be created.\n");
+ abort();
+ }
+
+ if (msg == out) {
+ fprintf(stderr, "FAIL: The message should have changed\n");
+ abort();
+ }
+
+ if (out->len != ARRAY_SIZE(cc_setup_national_patched)) {
+ fprintf(stderr, "FAIL: Length is wrong.\n");
+ abort();
+ }
+
+ if (memcmp(cc_setup_national_patched, out->data, out->len) != 0) {
+ fprintf(stderr, "FAIL: Data is wrong.\n");
+ fprintf(stderr, "Data was: %s\n", hexdump(out->data, out->len));
+ abort();
+ }
+
+ msgb_free(out);
+
+ /* Make sure that a wildcard is matching */
+ entry.mnc = "09";
+ 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) {
+ fprintf(stderr, "FAIL: Could not parse ID resp\n");
+ abort();
+ }
+
+ out = bsc_nat_rewrite_setup(nat, msg, parsed, imsi);
+ if (out != msg) {
+ fprintf(stderr, "FAIL: The message should be unchanged.\n");
+ abort();
+ }
+
+ if (out->len != ARRAY_SIZE(cc_setup_national)) {
+ fprintf(stderr, "FAIL: Foo\n");
+ abort();
+ }
+
+ if (memcmp(out->data, cc_setup_national, ARRAY_SIZE(cc_setup_national)) != 0) {
+ fprintf(stderr, "FAIL: The message should really be unchanged.\n");
+ abort();
+ }
+
+ msgb_free(out);
+}
+
+int main(int argc, char **argv)
+{
+ struct log_target *stderr_target;
+
+ sccp_set_log_area(DSCCP);
+ log_init(&log_info);
+ stderr_target = log_target_create_stderr();
+ log_add_target(stderr_target);
+ log_set_all_filter(stderr_target, 1);
+
+ 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_mgcp_allocations();
+ return 0;
+}