diff options
Diffstat (limited to 'tests/mslookup/mslookup_client_mdns_test.c')
| -rw-r--r-- | tests/mslookup/mslookup_client_mdns_test.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/tests/mslookup/mslookup_client_mdns_test.c b/tests/mslookup/mslookup_client_mdns_test.c new file mode 100644 index 0000000..6091e3c --- /dev/null +++ b/tests/mslookup/mslookup_client_mdns_test.c @@ -0,0 +1,220 @@ +/* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> + * + * 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <stdbool.h> +#include <string.h> +#include <unistd.h> +#include <osmocom/core/select.h> +#include <osmocom/core/application.h> +#include <osmocom/hlr/logging.h> +#include <osmocom/mslookup/mslookup.h> +#include <osmocom/mslookup/mslookup_client.h> +#include <osmocom/mslookup/mslookup_client_mdns.h> +#include <osmocom/mslookup/mdns.h> +#include <osmocom/mslookup/mdns_sock.h> + +void *ctx = NULL; + +#define TEST_IP OSMO_MSLOOKUP_MDNS_IP4 +#define TEST_PORT OSMO_MSLOOKUP_MDNS_PORT +#define TEST_DOMAIN_SUFFIX "mslookup_client_mdns_test.dgsm.osmocom.org" + +/* + * Test server (emulates the mDNS server in OsmoHLR) and client + */ +struct osmo_mdns_sock *server_mc; + + +static void server_reply(struct osmo_mslookup_query *query, uint16_t packet_id) +{ + struct osmo_mslookup_result result = {0}; + struct msgb *msg; + + result.rc = OSMO_MSLOOKUP_RC_RESULT; + result.age = 3; + osmo_sockaddr_str_from_str(&result.host_v4, "42.42.42.42", 444); + osmo_sockaddr_str_from_str(&result.host_v6, "1122:3344:5566:7788:99aa:bbcc:ddee:ff00", 666); + + msg = osmo_mdns_result_encode(ctx, packet_id, query, &result, TEST_DOMAIN_SUFFIX); + OSMO_ASSERT(msg); + OSMO_ASSERT(osmo_mdns_sock_send(server_mc, msg) == 0); +} + +static int server_recv(struct osmo_fd *osmo_fd, unsigned int what) +{ + int n; + uint8_t buffer[1024]; + uint16_t packet_id; + struct osmo_mslookup_query *query; + + fprintf(stderr, "%s\n", __func__); + + /* Parse the message and print it */ + n = read(osmo_fd->fd, buffer, sizeof(buffer)); + OSMO_ASSERT(n >= 0); + + query = osmo_mdns_query_decode(ctx, buffer, n, &packet_id, TEST_DOMAIN_SUFFIX); + if (!query) + return -1; /* server receiving own answer is expected */ + + fprintf(stderr, "received request\n"); + server_reply(query, packet_id); + talloc_free(query); + return n; +} + +static void server_init() +{ + fprintf(stderr, "%s\n", __func__); + server_mc = osmo_mdns_sock_init(ctx, TEST_IP, TEST_PORT, server_recv, NULL, 0); + OSMO_ASSERT(server_mc); +} + +static void server_stop() +{ + fprintf(stderr, "%s\n", __func__); + OSMO_ASSERT(server_mc); + osmo_mdns_sock_cleanup(server_mc); + server_mc = NULL; +} + +struct osmo_mslookup_client* client; +struct osmo_mslookup_client_method* client_method; + +static void client_init() +{ + fprintf(stderr, "%s\n", __func__); + client = osmo_mslookup_client_new(ctx); + OSMO_ASSERT(client); + client_method = osmo_mslookup_client_add_mdns(client, TEST_IP, TEST_PORT, 1337, TEST_DOMAIN_SUFFIX); + OSMO_ASSERT(client_method); +} + +static void client_recv(struct osmo_mslookup_client *client, uint32_t request_handle, + const struct osmo_mslookup_query *query, const struct osmo_mslookup_result *result) +{ + char buf[256]; + fprintf(stderr, "%s\n", __func__); + fprintf(stderr, "client_recv(): %s\n", osmo_mslookup_result_name_b(buf, sizeof(buf), query, result)); + + osmo_mslookup_client_request_cancel(client, request_handle); +} + +static void client_query() +{ + struct osmo_mslookup_id id = {.type = OSMO_MSLOOKUP_ID_IMSI, + .imsi = "123456789012345"}; + const struct osmo_mslookup_query query = { + .service = "gsup.hlr", + .id = id, + }; + struct osmo_mslookup_query_handling handling = { + .result_timeout_milliseconds = 2000, + .result_cb = client_recv, + }; + + fprintf(stderr, "%s\n", __func__); + osmo_mslookup_client_request(client, &query, &handling); +} + +static void client_stop() +{ + fprintf(stderr, "%s\n", __func__); + osmo_mslookup_client_free(client); + client = NULL; +} +const struct timeval fake_time_start_time = { 0, 0 }; + +#define fake_time_passes(secs, usecs) do \ +{ \ + struct timeval diff; \ + osmo_gettimeofday_override_add(secs, usecs); \ + osmo_clock_override_add(CLOCK_MONOTONIC, secs, usecs * 1000); \ + timersub(&osmo_gettimeofday_override_time, &fake_time_start_time, &diff); \ + LOGP(DMSLOOKUP, LOGL_DEBUG, "Total time passed: %d.%06d s\n", \ + (int)diff.tv_sec, (int)diff.tv_usec); \ + osmo_timers_prepare(); \ + osmo_timers_update(); \ +} while (0) + +static 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 void test_server_client() +{ + fprintf(stderr, "-- %s --\n", __func__); + server_init(); + client_init(); + client_query(); + + /* Let the server receive the query and indirectly call server_recv(). As side effect of using the same IP and + * port, the client will also receive its own question. The client will dismiss its own question, as it is just + * looking for answers. */ + OSMO_ASSERT(osmo_select_main_ctx(1) == 1); + + /* Let the mslookup client receive the answer (also same side effect as above). It does not call the callback + * (client_recv()) just yet, because it is waiting for the best result within two seconds. */ + OSMO_ASSERT(osmo_select_main_ctx(1) == 1); + + /* Time flies by, client_recv() gets called. */ + fake_time_passes(5, 0); + + server_stop(); + client_stop(); +} + +/* + * Run all tests + */ +int main() +{ + talloc_enable_null_tracking(); + ctx = talloc_named_const(NULL, 0, "main"); + osmo_init_logging2(ctx, NULL); + + log_set_print_filename(osmo_stderr_target, 0); + log_set_print_level(osmo_stderr_target, 0); + log_set_print_category(osmo_stderr_target, 0); + log_set_print_category_hex(osmo_stderr_target, 0); + log_set_use_color(osmo_stderr_target, 0); + log_set_category_filter(osmo_stderr_target, DMSLOOKUP, true, LOGL_DEBUG); + + fake_time_start(); + + test_server_client(); + + log_fini(); + + OSMO_ASSERT(talloc_total_blocks(ctx) == 1); + talloc_free(ctx); + OSMO_ASSERT(talloc_total_blocks(NULL) == 1); + talloc_disable_null_tracking(); + + return 0; +} |