diff options
Diffstat (limited to 'openbsc/tests/gtphub/gtphub_test.c')
| -rw-r--r-- | openbsc/tests/gtphub/gtphub_test.c | 1786 |
1 files changed, 0 insertions, 1786 deletions
diff --git a/openbsc/tests/gtphub/gtphub_test.c b/openbsc/tests/gtphub/gtphub_test.c deleted file mode 100644 index e7c27d2cb..000000000 --- a/openbsc/tests/gtphub/gtphub_test.c +++ /dev/null @@ -1,1786 +0,0 @@ -/* Test the GTP hub */ - -/* (C) 2015 by sysmocom s.f.m.c. GmbH - * All Rights Reserved - * - * Author: Neels Hofmeyr <nhofmeyr@sysmcom.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * - */ - -#include <stdio.h> -#include <string.h> -#include <limits.h> -#include <unistd.h> - -#include <osmocom/core/utils.h> -#include <osmocom/core/application.h> - -#include <openbsc/debug.h> - -#include <openbsc/gtphub.h> -#include <gtp.h> -#include <gtpie.h> - -#define ZERO_STRUCT(struct_pointer) memset(struct_pointer, '\0', \ - sizeof(*(struct_pointer))) - -#define LVL2_ASSERT(exp) LVL2_ASSERT_R(exp, return 0) -#define LVL2_ASSERT_R(exp, ret) \ - if (!(exp)) { \ - fprintf(stderr, "LVL2 Assert failed %s %s:%d\n", #exp, \ - __FILE__, __LINE__); \ - osmo_generate_backtrace(); \ - ret; \ - } - -/* Convenience makro, note: only within this C file. */ -#define LOG(label) \ - { fprintf(stderr, "\n" label "\n"); \ - printf(label "\n"); } - -void gtphub_init(struct gtphub *hub); -void gtphub_free(struct gtphub *hub); - -void *osmo_gtphub_ctx; - -static void nr_mapping_free(struct expiring_item *e) -{ - struct nr_mapping *m = container_of(e, struct nr_mapping, - expiry_entry); - nr_mapping_del(m); - talloc_free(m); -} - -static struct nr_mapping *nr_mapping_alloc(void) -{ - struct nr_mapping *m; - m = talloc(osmo_gtphub_ctx, struct nr_mapping); - nr_mapping_init(m); - m->expiry_entry.del_cb = nr_mapping_free; - return m; -} - -static struct nr_mapping *nr_map_have(struct nr_map *map, void *origin, - nr_t orig, time_t now) -{ - struct nr_mapping *mapping; - - mapping = nr_map_get(map, origin, orig); - if (!mapping) { - mapping = nr_mapping_alloc(); - mapping->origin = origin; - mapping->orig = orig; - nr_map_add(map, mapping, now); - } - - return mapping; -} - -static nr_t nr_map_verify(const struct nr_map *map, void *origin, nr_t orig, - nr_t expect_repl) -{ - struct nr_mapping *m; - m = nr_map_get(map, origin, orig); - - if (!m) { - printf("mapping not found for %p %d\n", origin, orig); - return 0; - } - - if (m->repl != expect_repl) { - printf("mapping found, but nr mismatches: expect %d, got %d\n", - (int)expect_repl, (int)m->repl); - return 0; - } - - return 1; -} - -static int nr_map_verify_inv(const struct nr_map *map, nr_t repl, - void *expect_origin, nr_t expect_orig) -{ - struct nr_mapping *m; - m = nr_map_get_inv(map, repl); - if (!m) { - printf("mapping not found for %d\n", (int)repl); - return 0; - } - - if (m->origin != expect_origin) { - printf("mapping found, but origin mismatches:" - " expect %p, got %p\n", - expect_origin, m->origin); - return 0; - } - - if (m->orig != expect_orig) { - printf("mapping found, but nr mismatches: expect %d, got %d\n", - (int)expect_orig, (int)m->orig); - return 0; - } - - return 1; -} - - -static void test_nr_map_basic(void) -{ - struct nr_pool _pool; - struct nr_pool *pool = &_pool; - struct nr_map _map; - struct nr_map *map = &_map; - - nr_pool_init(pool, 1, 1000); - nr_map_init(map, pool, NULL); - - OSMO_ASSERT(llist_empty(&map->mappings)); - -#define TEST_N_HALF 100 -#define TEST_N (2*TEST_N_HALF) -#define TEST_I 123 - uint32_t i, check_i; - uint32_t m[TEST_N]; - struct nr_mapping *mapping; - - /* create half of TEST_N mappings from one origin */ - void *origin1 = (void*)0x1234; - for (i = 0; i < TEST_N_HALF; i++) { - nr_t orig = TEST_I + i; - mapping = nr_map_have(map, origin1, orig, 0); - m[i] = mapping->repl; - OSMO_ASSERT(m[i] != 0); - OSMO_ASSERT(llist_count(&map->mappings) == (i+1)); - for (check_i = 0; check_i < i; check_i++) - OSMO_ASSERT(m[check_i] != m[i]); - } - OSMO_ASSERT(llist_count(&map->mappings) == TEST_N_HALF); - - /* create another TEST_N mappings with the same original numbers, but - * from a different origin */ - void *origin2 = (void*)0x5678; - for (i = 0; i < TEST_N_HALF; i++) { - int i2 = TEST_N_HALF + i; - nr_t orig = TEST_I + i; - mapping = nr_map_have(map, origin2, orig, 0); - m[i2] = mapping->repl; - OSMO_ASSERT(m[i2] != 0); - OSMO_ASSERT(llist_count(&map->mappings) == (i2+1)); - for (check_i = 0; check_i < i2; check_i++) - OSMO_ASSERT(m[check_i] != m[i2]); - } - OSMO_ASSERT(llist_count(&map->mappings) == TEST_N); - - /* verify mappings */ - for (i = 0; i < TEST_N_HALF; i++) { - nr_t orig = TEST_I + i; - { - OSMO_ASSERT(nr_map_verify(map, origin1, orig, m[i])); - OSMO_ASSERT(nr_map_verify_inv(map, m[i], origin1, - orig)); - } - { - int i2 = TEST_N_HALF + i; - OSMO_ASSERT(nr_map_verify(map, origin2, orig, m[i2])); - OSMO_ASSERT(nr_map_verify_inv(map, m[i2], origin2, - orig)); - } - } - - /* remove all mappings */ - for (i = 0; i < TEST_N_HALF; i++) { - OSMO_ASSERT(llist_count(&map->mappings) == (TEST_N - 2*i)); - - nr_t orig = TEST_I + i; - nr_mapping_del(nr_map_get(map, origin1, orig)); - nr_mapping_del(nr_map_get(map, origin2, orig)); - } - OSMO_ASSERT(llist_empty(&map->mappings)); -#undef TEST_N -#undef TEST_I -} - -static int nr_map_is(struct nr_map *map, const char *str) -{ - static char buf[4096]; - char *pos = buf; - size_t len = sizeof(buf); - struct nr_mapping *m; - llist_for_each_entry(m, &map->mappings, entry) { - size_t wrote = snprintf(pos, len, "(%u->%u@%d), ", - m->orig, - m->repl, - (int)m->expiry_entry.expiry); - OSMO_ASSERT(wrote < len); - pos += wrote; - len -= wrote; - } - *pos = '\0'; - - if (strncmp(buf, str, sizeof(buf)) != 0) { - printf("FAILURE: nr_map_is() mismatches expected value:\n" - "expected: \"%s\"\n" - "is: \"%s\"\n", - str, buf); - return 0; - } - return 1; -} - -static int test_nr_map_wrap_with(nr_t nr_min, nr_t nr_max, nr_t repl_last, - nr_t orig_start, int orig_n, - const char *expect) -{ - struct nr_pool _pool; - struct nr_pool *pool = &_pool; - struct nr_map _map; - struct nr_map *map = &_map; - - nr_pool_init(pool, nr_min, nr_max); - nr_map_init(map, pool, NULL); - - pool->last_nr = repl_last; - - void *origin = (void*)0x1234; - - int i; - for (i = 0; i < orig_n; i++) - LVL2_ASSERT(nr_map_have(map, origin, orig_start + i, 0)); - - LVL2_ASSERT(nr_map_is(map, expect)); - - nr_map_clear(map); - return 1; -} - -static void test_nr_map_wrap(void) -{ - OSMO_ASSERT(test_nr_map_wrap_with( - 0, UINT_MAX, UINT_MAX - 2, - 1, 5, - "(1->4294967294@0), " - "(2->4294967295@0), " - "(3->0@0), " - "(4->1@0), " - "(5->2@0), " - )); - OSMO_ASSERT(test_nr_map_wrap_with( - 5, 10, 8, - 1, 5, - "(1->9@0), (2->10@0), (3->5@0), (4->6@0), (5->7@0), " - )); -} - -static void test_expiry(void) -{ - struct expiry expiry; - struct nr_pool pool; - struct nr_map map; - int i; - - expiry_init(&expiry, 30); - nr_pool_init(&pool, 1, 1000); - nr_map_init(&map, &pool, &expiry); - OSMO_ASSERT(nr_map_is(&map, "")); - - /* tick on empty map */ - OSMO_ASSERT(expiry_tick(&expiry, 10000) == 0); - OSMO_ASSERT(nr_map_is(&map, "")); - -#define MAP1 \ - "(10->1@10040), " \ - "" - -#define MAP2 \ - "(20->2@10050), " \ - "(21->3@10051), " \ - "(22->4@10052), " \ - "(23->5@10053), " \ - "(24->6@10054), " \ - "(25->7@10055), " \ - "(26->8@10056), " \ - "(27->9@10057), " \ - "" - -#define MAP3 \ - "(420->10@10072), " \ - "(421->11@10072), " \ - "(422->12@10072), " \ - "(423->13@10072), " \ - "(424->14@10072), " \ - "(425->15@10072), " \ - "(426->16@10072), " \ - "(427->17@10072), " \ - "" - - /* add mapping at time 10010. */ - nr_map_have(&map, 0, 10, 10010); - OSMO_ASSERT(nr_map_is(&map, MAP1)); - - /* tick on unexpired item. */ - OSMO_ASSERT(expiry_tick(&expiry, 10010) == 0); - OSMO_ASSERT(expiry_tick(&expiry, 10011) == 0); - OSMO_ASSERT(nr_map_is(&map, MAP1)); - - /* Spread mappings at 10020, 10021, ... 10027. */ - for (i = 0; i < 8; i++) - nr_map_have(&map, 0, 20 + i, 10020 + i); - OSMO_ASSERT(nr_map_is(&map, MAP1 MAP2)); - - /* tick on unexpired items. */ - OSMO_ASSERT(expiry_tick(&expiry, 10030) == 0); - OSMO_ASSERT(expiry_tick(&expiry, 10039) == 0); - OSMO_ASSERT(nr_map_is(&map, MAP1 MAP2)); - - /* expire the first item (from 10010). */ - OSMO_ASSERT(expiry_tick(&expiry, 10010 + 30) == 1); - OSMO_ASSERT(nr_map_is(&map, MAP2)); - - /* again nothing to expire */ - OSMO_ASSERT(expiry_tick(&expiry, 10041) == 0); - OSMO_ASSERT(nr_map_is(&map, MAP2)); - - /* Mappings all at the same time. */ - for (i = 0; i < 8; i++) - nr_map_have(&map, 0, 420 + i, 10042); - OSMO_ASSERT(nr_map_is(&map, MAP2 MAP3)); - - /* Eight to expire, were added further above to be chronologically - * correct, at 10020..10027. */ - OSMO_ASSERT(expiry_tick(&expiry, 10027 + 30) == 8); - OSMO_ASSERT(nr_map_is(&map, MAP3)); - - /* again nothing to expire */ - OSMO_ASSERT(expiry_tick(&expiry, 10027 + 30) == 0); - OSMO_ASSERT(nr_map_is(&map, MAP3)); - - /* Eight to expire, from 10042. Now at 10042 + 30: */ - OSMO_ASSERT(expiry_tick(&expiry, 10042 + 30) == 8); - OSMO_ASSERT(nr_map_is(&map, "")); - -#undef MAP1 -#undef MAP2 -#undef MAP3 -} - -char resolve_ggsn_got_imsi[GSM23003_IMSI_MAX_DIGITS+1]; -char resolve_ggsn_got_ni[GSM_APN_LENGTH]; - -struct osmo_sockaddr resolved_ggsn_addr; -static int resolve_to_ggsn(const char *addr, uint16_t port) -{ - LVL2_ASSERT(osmo_sockaddr_init_udp(&resolved_ggsn_addr, - addr, port) - == 0); - return 1; -} - -struct osmo_sockaddr resolved_sgsn_addr; -static int resolve_to_sgsn(const char *addr, uint16_t port) -{ - LVL2_ASSERT(osmo_sockaddr_init_udp(&resolved_sgsn_addr, - addr, port) - == 0); - return 1; -} - -struct osmo_sockaddr sgsn_sender; -static int send_from_sgsn(const char *addr, uint16_t port) -{ - LVL2_ASSERT(osmo_sockaddr_init_udp(&sgsn_sender, - addr, port) - == 0); - return 1; -} - -struct osmo_sockaddr ggsn_sender; -static int send_from_ggsn(const char *addr, uint16_t port) -{ - LVL2_ASSERT(osmo_sockaddr_init_udp(&ggsn_sender, - addr, port) - == 0); - return 1; -} - - -/* override, requires '-Wl,--wrap=gtphub_resolve_ggsn_addr' */ -struct gtphub_peer_port *__real_gtphub_resolve_ggsn_addr(struct gtphub *hub, - const char *imsi_str, - const char *apn_ni_str); - -struct gtphub_peer_port *__wrap_gtphub_resolve_ggsn_addr(struct gtphub *hub, - const char *imsi_str, - const char *apn_ni_str) -{ - struct gsn_addr resolved_gsna; - uint16_t resolved_port; - - OSMO_ASSERT(gsn_addr_from_sockaddr(&resolved_gsna, &resolved_port, - &resolved_ggsn_addr) == 0); - - struct gtphub_peer_port *pp; - pp = gtphub_port_have(hub, &hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_CTRL], - &resolved_gsna, resolved_port); - printf("- __wrap_gtphub_resolve_ggsn_addr():\n" - " returning GGSN addr from imsi %s ni %s: %s\n", - imsi_str, apn_ni_str, gtphub_port_str(pp)); - - if (!imsi_str) - imsi_str = "(null)"; - osmo_strlcpy(resolve_ggsn_got_imsi, imsi_str, - sizeof(resolve_ggsn_got_imsi)); - - if (!apn_ni_str) - apn_ni_str = "(null)"; - osmo_strlcpy(resolve_ggsn_got_ni, apn_ni_str, - sizeof(resolve_ggsn_got_ni)); - - return pp; -} - -#define was_resolved_for(IMSI,NI) _was_resolved_for(IMSI, NI, __FILE__, __LINE__) -static int _was_resolved_for(const char *imsi, const char *ni, const char - *file, int line) -{ - int cmp0 = strncmp(imsi, resolve_ggsn_got_imsi, - sizeof(resolve_ggsn_got_imsi)); - - if (cmp0 != 0) { - printf("\n%s:%d: was_resolved_for(): MISMATCH for IMSI\n" - " expecting: '%s'\n" - " got: '%s'\n\n", - file, - line, - imsi, resolve_ggsn_got_imsi); - } - - int cmp1 = strncmp(ni, resolve_ggsn_got_ni, - sizeof(resolve_ggsn_got_ni)); - if (cmp1 != 0) { - printf("\n%s:%d: was_resolved_for(): MISMATCH for NI\n" - " expecting: '%s'\n" - " got: '%s'\n\n", - file, - line, - ni, resolve_ggsn_got_ni); - } - - return (cmp0 == 0) && (cmp1 == 0); -} - -/* override, requires '-Wl,--wrap=gtphub_ares_init' */ -int __real_gtphub_ares_init(struct gtphub *hub); - -int __wrap_gtphub_ares_init(struct gtphub *hub) -{ - /* Do nothing. */ - return 0; -} - -/* override, requires '-Wl,--wrap=gtphub_write' */ -int __real_gtphub_write(const struct osmo_fd *to, - const struct osmo_sockaddr *to_addr, - const uint8_t *buf, size_t buf_len); - -int __wrap_gtphub_write(const struct osmo_fd *to, - const struct osmo_sockaddr *to_addr, - const uint8_t *buf, size_t buf_len) -{ - printf("Out-of-band gtphub_write(%d):\n" - "to %s\n" - "%s\n", - (int)buf_len, - osmo_sockaddr_to_str(to_addr), - osmo_hexdump(buf, buf_len)); - return 0; -} - -#define buf_len 1024 -static uint8_t buf[buf_len]; -static uint8_t *reply_buf; - -static unsigned int msg(const char *hex) -{ - unsigned int l = osmo_hexparse(hex, buf, buf_len); - OSMO_ASSERT(l > 0); - return l; -} - -/* Compare static buf to given string constant. The amount of bytes is obtained - * from parsing the GTP header in buf. hex must match an osmo_hexdump() of the - * desired message. Return 1 if size and content match. */ -#define reply_is(MSG) _reply_is(MSG, __FILE__, __LINE__) -static int _reply_is(const char *hex, const char *file, int line) -{ - struct gtp1_header_long *h = (void*)reply_buf; - int len = ntoh16(h->length) + 8; - const char *dump = osmo_hexdump_nospc(reply_buf, len); - int cmp = strcmp(dump, hex); - - if (cmp != 0) { - printf("\n%s:%d: reply_is(): MISMATCH\n" - " expecting:\n'%s'\n" - " got:\n'%s'\n\n", - file, - line, - hex, dump); - int i; - int l = strlen(hex); - int m = strlen(dump); - if (m < l) - l = m; - for (i = 0; i < l; i++) { - if (hex[i] != dump[i]) { - printf("First mismatch at position %d:\n" - " %s\n %s\n", i, hex + i, dump + i); - break; - } - } - } - return cmp == 0; -} - -#define same_addr(GOT, EXPECTED) _same_addr((GOT),(EXPECTED), __FILE__, __LINE__) -static int _same_addr(const struct osmo_sockaddr *got, - const struct osmo_sockaddr *expected, - const char *file, int line) -{ - int cmp = osmo_sockaddr_cmp(got, expected); - if (!cmp) - return 1; - char buf[256]; - printf("\n%s:%d: addr_is(): MISMATCH\n" - " expecting: '%s'\n" - " got: '%s'\n\n", - file, line, - osmo_sockaddr_to_str(expected), - osmo_sockaddr_to_strb(got, buf, sizeof(buf))); - return 0; -} - - -time_t now; -static struct gtphub _hub; -static struct gtphub *hub = &_hub; - -static int setup_test_hub() -{ - /* Not really needed, but to make 100% sure... */ - ZERO_STRUCT(hub); - - gtphub_init(hub); - - /* Tell this mock gtphub its local address for this test. */ - LVL2_ASSERT(gsn_addr_from_str(&hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_CTRL].local_addr, - "127.0.1.1") == 0); - LVL2_ASSERT(gsn_addr_from_str(&hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_USER].local_addr, - "127.0.1.2") == 0); - LVL2_ASSERT(gsn_addr_from_str(&hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_CTRL].local_addr, - "127.0.2.1") == 0); - LVL2_ASSERT(gsn_addr_from_str(&hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_USER].local_addr, - "127.0.2.2") == 0); - - hub->restart_counter = 0x23; - now = 345; - LVL2_ASSERT(send_from_sgsn("192.168.42.23", 423)); - LVL2_ASSERT(resolve_to_ggsn("192.168.43.34", 2123)); - LVL2_ASSERT(send_from_ggsn("192.168.43.34", 434)); - LVL2_ASSERT(resolve_to_sgsn("192.168.42.23", 2123)); - -#define GGSNS_CTRL_FD 1 -#define GGSNS_USER_FD 2 -#define SGSNS_CTRL_FD 3 -#define SGSNS_USER_FD 4 - hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_CTRL].ofd.priv_nr = GGSNS_CTRL_FD; - hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_USER].ofd.priv_nr = GGSNS_USER_FD; - hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_CTRL].ofd.priv_nr = SGSNS_CTRL_FD; - hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_USER].ofd.priv_nr = SGSNS_USER_FD; - - return 1; -} - -static int clear_test_hub() -{ - /* expire all */ - gtphub_gc(hub, now + (60 * GTPH_EXPIRE_SLOWLY_MINUTES) + 1); - - int plane_idx; - plane_idx = GTPH_PLANE_CTRL; - LVL2_ASSERT(llist_empty(&hub->to_gsns[GTPH_SIDE_GGSN][plane_idx].peers)); - LVL2_ASSERT(llist_empty(&hub->to_gsns[GTPH_SIDE_SGSN][plane_idx].peers)); - plane_idx = GTPH_PLANE_USER; - LVL2_ASSERT(llist_empty(&hub->to_gsns[GTPH_SIDE_GGSN][plane_idx].peers)); - LVL2_ASSERT(llist_empty(&hub->to_gsns[GTPH_SIDE_SGSN][plane_idx].peers)); - - LVL2_ASSERT(llist_empty(&hub->tunnels)); - LVL2_ASSERT(llist_empty(&hub->pending_deletes)); - LVL2_ASSERT(llist_empty(&hub->ggsn_lookups)); - LVL2_ASSERT(llist_empty(&hub->resolved_ggsns)); - - gtphub_free(hub); - return 1; -} - -static int tunnels_are(const char *expect) -{ - static char buf[4096]; - char *pos = buf; - size_t len = sizeof(buf); - struct gtphub_tunnel *t; - llist_for_each_entry(t, &hub->tunnels, entry) { - size_t wrote = snprintf(pos, len, "%s @%d\n", - gtphub_tunnel_str(t), - (int)t->expiry_entry.expiry); - LVL2_ASSERT(wrote < len); - pos += wrote; - len -= wrote; - } - *pos = '\0'; - - if (strncmp(buf, expect, sizeof(buf)) != 0) { - fprintf(stderr, "FAILURE: tunnels_are() mismatches expected value:\n" - "EXPECTED:\n%s\n" - "IS:\n%s\n", - expect, buf); - LVL2_ASSERT("tunnels do not match expected listing."); - return 0; - } - return 1; -} - -static void test_echo(void) -{ - LOG("test_echo"); - OSMO_ASSERT(setup_test_hub()); - - now = 123; - - struct osmo_fd *to_ofd; - struct osmo_sockaddr to_addr; - struct gtphub_peer_port *pp; - int send; - - const char *gtp_ping_from_sgsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "01" /* type 01: Echo request */ - "0004" /* length of 4 after header TEI */ - "00000000" /* header TEI == 0 in Echo */ - "abcd" /* some 2 octet sequence nr */ - "0000" /* N-PDU 0, no extension header (why is this here?) */ - ; - - const char *gtp_pong_to_sgsn = - "32" - "02" /* type 02: Echo response */ - "0006" /* length of 6 after header TEI */ - "00000000" /* header TEI == 0 in Echo */ - "abcd" /* same sequence nr */ - "0000" - "0e23" /* Recovery with restart counter */ - ; - - to_ofd = NULL; - ZERO_STRUCT(&to_addr); - send = gtphub_handle_buf(hub, GTPH_SIDE_SGSN, GTPH_PLANE_CTRL, - &sgsn_sender, buf, msg(gtp_ping_from_sgsn), - now, &reply_buf, &to_ofd, &to_addr); - OSMO_ASSERT(send > 0); - OSMO_ASSERT(to_addr.l); - OSMO_ASSERT(same_addr(&to_addr, &sgsn_sender)); - OSMO_ASSERT(to_ofd && (to_ofd->priv_nr == SGSNS_CTRL_FD)); - OSMO_ASSERT(reply_is(gtp_pong_to_sgsn)); - - pp = gtphub_port_find_sa(&hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_CTRL], - &sgsn_sender); - /* We don't record Echo peers. */ - OSMO_ASSERT(!pp); - - const char *gtp_ping_from_ggsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "01" /* type 01: Echo request */ - "0004" /* length of 4 after header TEI */ - "00000000" /* header TEI == 0 in Echo */ - "cdef" /* some 2 octet sequence nr */ - "0000" /* N-PDU 0, no extension header (why is this here?) */ - ; - - const char *gtp_pong_to_ggsn = - "32" - "02" /* type 02: Echo response */ - "0006" /* length of 6 after header TEI */ - "00000000" /* header TEI == 0 in Echo */ - "cdef" /* same sequence nr */ - "0000" - "0e23" /* Recovery with restart counter */ - ; - - to_ofd = NULL; - ZERO_STRUCT(&to_addr); - send = gtphub_handle_buf(hub, GTPH_SIDE_GGSN, GTPH_PLANE_CTRL, - &ggsn_sender, buf, msg(gtp_ping_from_ggsn), - now, &reply_buf, &to_ofd, &to_addr); - OSMO_ASSERT(send > 0); - OSMO_ASSERT(same_addr(&to_addr, &ggsn_sender)); - OSMO_ASSERT(to_ofd && (to_ofd->priv_nr == GGSNS_CTRL_FD)); - OSMO_ASSERT(reply_is(gtp_pong_to_ggsn)); - - pp = gtphub_port_find_sa(&hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_CTRL], - &sgsn_sender); - OSMO_ASSERT(!pp); - - - /* And all the same on the user plane. */ - - to_ofd = NULL; - ZERO_STRUCT(&to_addr); - send = gtphub_handle_buf(hub, GTPH_SIDE_SGSN, GTPH_PLANE_USER, - &sgsn_sender, buf, msg(gtp_ping_from_sgsn), - now, &reply_buf, &to_ofd, &to_addr); - OSMO_ASSERT(send > 0); - OSMO_ASSERT(to_addr.l); - OSMO_ASSERT(same_addr(&to_addr, &sgsn_sender)); - OSMO_ASSERT(to_ofd && (to_ofd->priv_nr == SGSNS_USER_FD)); - OSMO_ASSERT(reply_is(gtp_pong_to_sgsn)); - - pp = gtphub_port_find_sa(&hub->to_gsns[GTPH_SIDE_SGSN][GTPH_PLANE_USER], - &sgsn_sender); - OSMO_ASSERT(!pp); - - to_ofd = NULL; - ZERO_STRUCT(&to_addr); - send = gtphub_handle_buf(hub, GTPH_SIDE_GGSN, GTPH_PLANE_USER, - &ggsn_sender, buf, msg(gtp_ping_from_ggsn), - now, &reply_buf, &to_ofd, &to_addr); - OSMO_ASSERT(send > 0); - OSMO_ASSERT(same_addr(&to_addr, &ggsn_sender)); - OSMO_ASSERT(to_ofd && (to_ofd->priv_nr == GGSNS_USER_FD)); - OSMO_ASSERT(reply_is(gtp_pong_to_ggsn)); - - pp = gtphub_port_find_sa(&hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_USER], - &sgsn_sender); - OSMO_ASSERT(!pp); - - - OSMO_ASSERT(clear_test_hub()); -} - - -#define MSG_PDP_CTX_REQ(len, seq, restart, imsi, tei_u, tei_c, apn, gsn_c, gsn_u) \ - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \ - "10" /* type 16: Create PDP Context Request */ \ - len /* msg length = 8 + len (2 octets) */ \ - "00000000" /* No TEI yet */ \ - seq /* Sequence nr (2 octets) */ \ - "00" /* N-PDU 0 */ \ - "00" /* No extensions */ \ - /* IEs */ \ - "0e" restart /* 14: Recovery (restart counter: 1 octet) */ \ - "02" /* 2 = IMSI */ \ - imsi /* (8 octets) */ \ - "0f01" /* 15: Selection mode = MS provided APN, subscription not verified*/ \ - "10" /* 16: TEI Data I */ \ - tei_u /* (4 octets) */ \ - "11" /* 17: TEI Control Plane */ \ - tei_c /* (4 octets) */ \ - "1400" /* 20: NSAPI = 0*/ \ - "1a" /* 26: Charging Characteristics */ \ - "0800" \ - "80" /* 128: End User Address */ \ - "0002" /* length = 2: empty PDP Address */ \ - "f121" /* spare 0xf0, PDP organization 1, PDP type number 0x21 = 33 */ \ - "83" /* 131: Access Point Name */ \ - apn /* (2 octets length, N octets encoded APN-NI) */ \ - "84" /* 132: Protocol Configuration Options */ \ - "0015" /* length = 21 */ \ - "80c0231101010011036d69670868656d6d656c6967" \ - "85" /* 133: GSN Address */ \ - gsn_c /* (2 octets length, N octets addr) */ \ - "85" /* 133: GSN Address (second entry) */ \ - gsn_u /* (2 octets length, N octets addr) */ \ - "86" /* 134: MS International PSTN/ISDN Number (MSISDN) */ \ - "0007" /* length */ \ - "916407123254f6" /* 1946702123456(f) */ \ - "87" /* 135: Quality of Service (QoS) Profile */ \ - "0004" /* length */ \ - "00" /* priority */ \ - "0b921f" /* QoS profile data */ - -#define MSG_PDP_CTX_RSP(len, tei_h, seq, restart, tei_u, tei_c, gsn_c, gsn_u) \ - "32" \ - "11" /* Create PDP Context Response */ \ - len /* msg length = 8 + len (2 octets) */ \ - tei_h /* destination TEI (sent in req above) */ \ - seq /* mapped seq */ \ - "00" "00" \ - /* IEs */ \ - "01" /* 1: Cause */ \ - "80" /* value = 0b10000000 = response, no rejection. */ \ - "08" /* 8: Reordering Required */ \ - "00" /* not required. */ \ - "0e" restart /* 14: Recovery */ \ - "10" /* 16: TEI Data I */ \ - tei_u \ - "11" /* 17: TEI Control */ \ - tei_c \ - "7f" /* 127: Charging ID */ \ - "00000001" \ - "80" /* 128: End User Address */ \ - "0006" /* length = 6 */ \ - "f121" /* spare 0xf0, PDP organization 1, PDP type number 0x21 = 33 */ \ - "7f000002" \ - "84" /* 132: Protocol Configuration Options */ \ - "0014" /* len = 20 */ \ - "8080211002000010810608080808830600000000" \ - "85" /* 133: GSN Address (Ctrl) */ \ - gsn_c \ - "85" /* 133: GSN Address (User) */ \ - gsn_u \ - "87" /* 135: Quality of Service (QoS) Profile */ \ - "0004" /* length */ \ - "00" /* priority */ \ - "0b921f" /* QoS profile data */ - -#define msg_from_sgsn_c(A,B,C,D) msg_from_sgsn(GTPH_PLANE_CTRL, A,B,C,D) -#define msg_from_sgsn_u(A,B,C,D) msg_from_sgsn(GTPH_PLANE_USER, A,B,C,D) -static int msg_from_sgsn(int plane_idx, - struct osmo_sockaddr *_sgsn_sender, - struct osmo_sockaddr *ggsn_receiver, - const char *hex_from_sgsn, - const char *hex_to_ggsn) -{ - struct osmo_fd *ggsn_ofd = NULL; - struct osmo_sockaddr ggsn_addr; - int send; - send = gtphub_handle_buf(hub, GTPH_SIDE_SGSN, plane_idx, _sgsn_sender, - buf, msg(hex_from_sgsn), now, - &reply_buf, &ggsn_ofd, &ggsn_addr); - LVL2_ASSERT(send > 0); - LVL2_ASSERT(same_addr(&ggsn_addr, ggsn_receiver)); - LVL2_ASSERT(reply_is(hex_to_ggsn)); - return 1; -} - -#define msg_from_ggsn_c(A,B,C,D) msg_from_ggsn(GTPH_PLANE_CTRL, A,B,C,D) -#define msg_from_ggsn_u(A,B,C,D) msg_from_ggsn(GTPH_PLANE_USER, A,B,C,D) -static int msg_from_ggsn(int plane_idx, - struct osmo_sockaddr *ggsn_sender, - struct osmo_sockaddr *sgsn_receiver, - const char *msg_from_ggsn, - const char *msg_to_sgsn) -{ - struct osmo_fd *sgsn_ofd; - struct osmo_sockaddr sgsn_addr; - int send; - send = gtphub_handle_buf(hub, GTPH_SIDE_GGSN, plane_idx, ggsn_sender, - buf, msg(msg_from_ggsn), now, - &reply_buf, &sgsn_ofd, &sgsn_addr); - if (*msg_to_sgsn) { - LVL2_ASSERT(send > 0); - LVL2_ASSERT(same_addr(&sgsn_addr, sgsn_receiver)); - LVL2_ASSERT(reply_is(msg_to_sgsn)); - } - else - LVL2_ASSERT(send == 0); - return 1; -} - -static int create_pdp_ctx() -{ - const char *gtp_req_from_sgsn = - MSG_PDP_CTX_REQ("0068", - "abcd", - "60", - "42000121436587f9", - "00000123", - "00000321", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn = - MSG_PDP_CTX_REQ("0068", - "6d31", /* mapped seq ("abcd") */ - "23", - "42000121436587f9", - "00000001", /* Data I: tunnel's TEI */ - "00000001", /* Control: tunnel's TEI */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - LVL2_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn, - gtp_req_to_ggsn)); - LVL2_ASSERT(was_resolved_for("240010123456789", "internet")); - - LVL2_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21945\n")); - - const char *gtp_resp_from_ggsn = - MSG_PDP_CTX_RSP("004e", - "00000001", /* destination TEI (sent in req above) */ - "6d31", /* mapped seq */ - "01", /* restart */ - "00000567", /* TEI U */ - "00000765", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn = - MSG_PDP_CTX_RSP("004e", - "00000321", /* unmapped TEI ("001") */ - "abcd", /* unmapped seq ("6d31") */ - "23", - "00000001", /* mapped TEI from GGSN ("567") */ - "00000001", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - LVL2_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn, - gtp_resp_to_sgsn)); - - return 1; -} - -#define MSG_DEL_PDP_CTX_REQ(tei, seq) \ - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \ - "14" /* type 20: Delete PDP Context Request */ \ - "0008" /* msg length = 8 + len (2 octets) */ \ - tei /* TEI Ctrl */ \ - seq /* Sequence nr (2 octets) */ \ - "00" /* N-PDU 0 */ \ - "00" /* No extensions */ \ - /* IEs */ \ - "13fe" /* 19: Teardown ind = 0 */ \ - "1400" /* 20: NSAPI = 0*/ \ - -#define MSG_DEL_PDP_CTX_RSP(tei, seq) \ - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr. */ \ - "15" /* type 21: Delete PDP Context Response */ \ - "0006" /* msg length = 8 + len (2 octets) */ \ - tei /* TEI Ctrl */ \ - seq /* Sequence nr (2 octets) */ \ - "00" /* N-PDU 0 */ \ - "00" /* No extensions */ \ - /* IEs */ \ - "01" /* 1: Cause */ \ - "80" /* value = 0b10000000 = response, no rejection. */ \ - -static int delete_pdp_ctx_from_sgsn(void) -{ - now += GTPH_EXPIRE_QUICKLY_SECS + 1; - gtphub_gc(hub, now); - - LVL2_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n")); - - /* TEI Ctrl from above and next sequence after abcd. */ - const char *gtp_req_from_sgsn = MSG_DEL_PDP_CTX_REQ("00000001", "abce"); - const char *gtp_req_to_ggsn = MSG_DEL_PDP_CTX_REQ("00000765", "6d32"); - - LVL2_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn, - gtp_req_to_ggsn)); - - /* 21945 + 31 = 21976 */ - LVL2_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21976\n")); - - const char *gtp_resp_from_ggsn = - MSG_DEL_PDP_CTX_RSP("00000001", "6d32"); - const char *gtp_resp_to_sgsn = - MSG_DEL_PDP_CTX_RSP("00000321", "abce"); - - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - LVL2_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn, - gtp_resp_to_sgsn)); - - LVL2_ASSERT(tunnels_are("")); - - return 1; -} - -static int delete_pdp_ctx_from_ggsn(void) -{ - now += GTPH_EXPIRE_QUICKLY_SECS + 1; - gtphub_gc(hub, now); - - LVL2_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n")); - - /* TEI Ctrl from above and next sequence after abcd. */ - const char *gtp_req_from_ggsn = MSG_DEL_PDP_CTX_REQ("00000001", "5432"); - const char *gtp_req_to_sgsn = MSG_DEL_PDP_CTX_REQ("00000321", "6d31"); - - LVL2_ASSERT(msg_from_ggsn_c(&ggsn_sender, - &resolved_sgsn_addr, - gtp_req_from_ggsn, - gtp_req_to_sgsn)); - - /* 21945 + 31 = 21976 */ - LVL2_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21976\n")); - - const char *gtp_resp_from_sgsn = - MSG_DEL_PDP_CTX_RSP("00000001", "6d31"); - const char *gtp_resp_to_ggsn = - MSG_DEL_PDP_CTX_RSP("00000765", "5432"); - - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - LVL2_ASSERT(msg_from_sgsn_c(&resolved_sgsn_addr, - &ggsn_sender, - gtp_resp_from_sgsn, - gtp_resp_to_ggsn)); - - LVL2_ASSERT(tunnels_are("")); - - return 1; -} - -static void test_one_pdp_ctx(int del_from_side) -{ - if (del_from_side == GTPH_SIDE_SGSN) - LOG("test_one_pdp_ctx (del from SGSN)") - else LOG("test_one_pdp_ctx (del from GGSN)"); - OSMO_ASSERT(setup_test_hub()); - - OSMO_ASSERT(create_pdp_ctx()); - - struct gtphub_peer_port *ggsn_port = - gtphub_port_find_sa(&hub->to_gsns[GTPH_SIDE_GGSN][GTPH_PLANE_CTRL], - &resolved_ggsn_addr); - OSMO_ASSERT(ggsn_port); - struct gtphub_peer *ggsn = ggsn_port->peer_addr->peer; - /* now == 345; now + 30 == 375. - * seq mapping from above: - * 0xabcd == 43981 (sent in the packet) - * 0x6d31 == 27953 (harcoded seq mapping start val) */ - OSMO_ASSERT(nr_map_is(&ggsn->seq_map, "(43981->27953@375), ")); - - /* now == 345; now + (6 * 60 * 60) == 21600 + 345 == 21945. - * 0x00000321 == 801 (TEI from SGSN Ctrl) - * 0x00000123 == 291 (TEI from SGSN User) - * 0x00000765 == 1893 (TEI from GGSN Ctrl) - * 0x00000567 == 1383 (TEI from GGSN User) - * Mapped TEIs should be 1 and 2. */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n")); - - if (del_from_side == GTPH_SIDE_SGSN) { - OSMO_ASSERT(delete_pdp_ctx_from_sgsn()); - } else { - OSMO_ASSERT(delete_pdp_ctx_from_ggsn()); - } - OSMO_ASSERT(tunnels_are("")); - - OSMO_ASSERT(clear_test_hub()); -} - -static void test_user_data(void) -{ - LOG("test_user_data"); - - OSMO_ASSERT(setup_test_hub()); - - OSMO_ASSERT(create_pdp_ctx()); - - /* now == 345; now + (6 * 60 * 60) == 21600 + 345 == 21945. */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n")); - - LOG("- user data starts"); - /* Now expect default port numbers for User plane. */ - resolve_to_ggsn("192.168.43.34", 2152); - resolve_to_sgsn("192.168.42.23", 2152); - - /* 10 minutes later */ - now += 600; - - const char *u_from_ggsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000001" /* mapped TEI for SGSN from create_pdp_ctx() */ - "0070" /* seq */ - "0000" /* No extensions */ - /* User data (ICMP packet), 96 - 12 = 84 octets */ - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - const char *u_to_sgsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000123" /* unmapped User TEI */ - "6d31" /* new mapped seq */ - "0000" - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - - /* This depends on create_pdp_ctx() sending resolved_sgsn_addr as GSN - * Address IEs in the GGSN's Create PDP Ctx Response. */ - OSMO_ASSERT(msg_from_ggsn_u(&ggsn_sender, - &resolved_sgsn_addr, - u_from_ggsn, - u_to_sgsn)); - - /* Make sure the user plane messages have refreshed the TEI mapping - * timeouts: 21945 + 600 == 22545. */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @22545\n")); - - const char *u_from_sgsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000001" /* mapped User TEI for GGSN from create_pdp_ctx() */ - "1234" /* unknown seq */ - "0000" /* No extensions */ - /* User data (ICMP packet), 96 - 12 = 84 octets */ - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - const char *u_to_ggsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000567" /* unmapped User TEI */ - "6d31" /* unmapped seq */ - "0000" - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - - OSMO_ASSERT(msg_from_sgsn_u(&sgsn_sender, - &resolved_ggsn_addr, - u_from_sgsn, - u_to_ggsn)); - - /* Make sure the user plane messages have refreshed the TEI mapping - * timeouts: 21945 + 600 == 22545. Both timeouts refreshed: */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @22545\n")); - - OSMO_ASSERT(clear_test_hub()); -} - -static void test_reused_tei(void) -{ - LOG("test_reused_tei"); - - OSMO_ASSERT(setup_test_hub()); - - OSMO_ASSERT(create_pdp_ctx()); - - const char *gtp_req_from_sgsn = - MSG_PDP_CTX_REQ("0068", - "abce", /* Next seq */ - "60", - "42000121436587f9", - "00000123", /* Same TEIs as before */ - "00000321", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn = - MSG_PDP_CTX_REQ("0068", - "6d32", /* mapped seq ("abce") */ - "23", - "42000121436587f9", - "00000002", /* mapped TEI Data I ("123") */ - "00000002", /* mapped TEI Control ("321") */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - OSMO_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn, - gtp_req_to_ggsn)); - OSMO_ASSERT(was_resolved_for("240010123456789", "internet")); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21945\n")); - - const char *gtp_resp_from_ggsn = - MSG_PDP_CTX_RSP("004e", - "00000002", /* destination TEI (sent in req above) */ - "6d32", /* mapped seq */ - "01", /* restart */ - "00000567", /* TEI U */ - "00000765", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn = - MSG_PDP_CTX_RSP("004e", - "00000321", /* unmapped TEI ("001") */ - "abce", /* unmapped seq ("6d32") */ - "23", - "00000002", /* mapped TEI from GGSN ("567") */ - "00000002", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn, - gtp_resp_to_sgsn)); - - OSMO_ASSERT(clear_test_hub()); -} - -static void test_peer_restarted(void) -{ - LOG("test_peer_restarted"); - - OSMO_ASSERT(setup_test_hub()); - - OSMO_ASSERT(create_pdp_ctx()); - - now += 10; - - const char *gtp_req_from_sgsn = - MSG_PDP_CTX_REQ("0068", - "1234", /* brand new seq */ - "61", /* DIFFERING restart counter */ - "42000121436587f9", - "00000abc", - "00000cba", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn = - MSG_PDP_CTX_REQ("0068", - "6d33", /* mapped seq ("1234") */ - "23", - "42000121436587f9", - "00000002", /* mapped TEI Data I ("123") */ - "00000002", /* mapped TEI Control ("321") */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - OSMO_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn, - gtp_req_to_ggsn)); - OSMO_ASSERT(was_resolved_for("240010123456789", "internet")); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" - " 192.168.42.23 (TEI C=cba U=abc)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21955\n" - "TEI=1:" - " (uninitialized) (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n" - )); - - const char *gtp_resp_from_ggsn = - MSG_PDP_CTX_RSP("004e", - "00000002", /* destination TEI (sent in req above) */ - "6d33", /* mapped seq */ - "01", /* restart */ - "00000def", /* TEI U */ - "00000fde", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn = - MSG_PDP_CTX_RSP("004e", - "00000cba", /* unmapped TEI ("005") */ - "1234", /* unmapped seq ("6d32") */ - "23", - "00000002", /* mapped TEI from GGSN ("567") */ - "00000002", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn, - gtp_resp_to_sgsn)); - - OSMO_ASSERT(clear_test_hub()); -} - -static void test_peer_restarted_reusing_tei(void) -{ - LOG("test_peer_restarted_reusing_tei"); - - OSMO_ASSERT(setup_test_hub()); - - OSMO_ASSERT(create_pdp_ctx()); - - now += 10; - - const char *gtp_req_from_sgsn = - MSG_PDP_CTX_REQ("0068", - "1234", /* brand new seq */ - "61", /* DIFFERING restart counter */ - "42000121436587f9", - "00000123", /* SAME TEI */ - "00000321", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn = - MSG_PDP_CTX_REQ("0068", - "6d33", /* seq 6d31 + 2, after "out-of-band" Delete PDP Ctx - due to differing restart counter. */ - "23", - "42000121436587f9", - "00000002", /* mapped TEI Data I ("123") */ - "00000002", /* mapped TEI Control ("321") */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - OSMO_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn, - gtp_req_to_ggsn)); - OSMO_ASSERT(was_resolved_for("240010123456789", "internet")); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" /* being established after restart */ - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21955\n" - "TEI=1:" /* invalidated due to restart */ - " (uninitialized) (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n" - )); - - /* An "out-of-band" delete request should have been sent to the GGSN - * (checked by expected log output in gtphub_test.ok), and the GGSN - * will (usually) send a Delete Response like this: */ - const char *gtp_del_resp_from_ggsn = - MSG_DEL_PDP_CTX_RSP("00000001", "6d32"); - - /* For this response (due to peer restart) we expect no forwarded - * message. */ - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_del_resp_from_ggsn, - "")); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" /* still being established after restart */ - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21955\n" - )); - - const char *gtp_resp_from_ggsn = - MSG_PDP_CTX_RSP("004e", - "00000002", /* destination TEI (sent in req above) */ - "6d33", /* mapped seq */ - "01", /* restart */ - "00000def", /* TEI U */ - "00000fde", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn = - MSG_PDP_CTX_RSP("004e", - "00000321", /* unmapped TEI ("005") */ - "1234", /* unmapped seq ("6d33") */ - "23", - "00000002", /* mapped TEI from GGSN ("567") */ - "00000002", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - /* The response should go back to whichever port the request came from - * (unmapped by sequence nr) */ - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn, - gtp_resp_to_sgsn)); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" /* still being established after restart */ - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=fde U=def)" - " @21955\n" - )); - - OSMO_ASSERT(clear_test_hub()); -} - -static void test_sgsn_behind_nat(void) -{ - LOG("test_user_data"); - - OSMO_ASSERT(setup_test_hub()); - hub->sgsn_use_sender = 1; /* <-- Main difference to test_user_data() */ - resolve_to_sgsn("192.168.42.23", 423); /* Same as sender */ - - OSMO_ASSERT(create_pdp_ctx()); - - /* now == 345; now + (6 * 60 * 60) == 21600 + 345 == 21945. */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21945\n")); - - LOG("- user data starts"); - /* Now expect default port numbers for User plane -- except SGSN. */ - resolve_to_ggsn("192.168.43.34", 2152); - - /* 10 minutes later */ - now += 600; - - const char *u_from_ggsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000001" /* mapped User TEI for SGSN from create_pdp_ctx() */ - "0070" /* seq */ - "0000" /* No extensions */ - /* User data (ICMP packet), 96 - 12 = 84 octets */ - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - const char *u_to_sgsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000123" /* unmapped User TEI */ - "6d31" /* new mapped seq */ - "0000" - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - - /* This depends on create_pdp_ctx() sending resolved_sgsn_addr as GSN - * Address IEs in the GGSN's Create PDP Ctx Response. */ - OSMO_ASSERT(msg_from_ggsn_u(&ggsn_sender, - &resolved_sgsn_addr, - u_from_ggsn, - u_to_sgsn)); - - /* Make sure the user plane messages have refreshed the TEI mapping - * timeouts: 21945 + 600 == 22545. */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @22545\n")); - - const char *u_from_sgsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000001" /* mapped User TEI for GGSN from create_pdp_ctx() */ - "1234" /* unknown seq */ - "0000" /* No extensions */ - /* User data (ICMP packet), 96 - 12 = 84 octets */ - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - const char *u_to_ggsn = - "32" /* 0b001'1 0010: version 1, protocol GTP, with seq nr */ - "ff" /* type 255: G-PDU */ - "0058" /* length: 88 + 8 octets == 96 */ - "00000567" /* unmapped User TEI */ - "6d31" /* unmapped seq */ - "0000" - "45000054daee40004001f7890a172a010a172a02080060d23f590071e3f8" - "4156000000007241010000000000101112131415161718191a1b1c1d1e1f" - "202122232425262728292a2b2c2d2e2f3031323334353637" - ; - - OSMO_ASSERT(msg_from_sgsn_u(&sgsn_sender, - &resolved_ggsn_addr, - u_from_sgsn, - u_to_ggsn)); - - /* Make sure the user plane messages have refreshed the TEI mapping - * timeouts: 21945 + 600 == 22545. Both timeouts refreshed: */ - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @22545\n")); - - OSMO_ASSERT(clear_test_hub()); -} - -void test_parallel_context_creation(void) -{ - LOG("test_parallel_context_creation"); - - OSMO_ASSERT(setup_test_hub()); - - const char *gtp_req_from_sgsn1 = - MSG_PDP_CTX_REQ("0068", - "abcd", - "60", - "42000121436587f9", - "00000123", - "00000321", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn1 = - MSG_PDP_CTX_REQ("0068", - "6d31", /* mapped seq ("abcd") */ - "23", - "42000121436587f9", - "00000001", /* mapped TEI Data I ("123") */ - "00000001", /* mapped TEI Control ("321") */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - OSMO_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn1, - gtp_req_to_ggsn1)); - - OSMO_ASSERT(tunnels_are( - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21945\n")); - - now ++; - - const char *gtp_req_from_sgsn2 = - MSG_PDP_CTX_REQ("0068", - "abce", - "60", - "42000121436588f9", - "00000124", - "00000322", - "0009""08696e7465726e6574", /* "(8)internet" */ - "0004""c0a82a17", /* same as default sgsn_sender */ - "0004""c0a82a17" - ); - const char *gtp_req_to_ggsn2 = - MSG_PDP_CTX_REQ("0068", - "6d32", /* mapped seq ("abce") */ - "23", - "42000121436588f9", - "00000002", /* mapped TEI Data I ("124") */ - "00000002", /* mapped TEI Control ("322") */ - "0009""08696e7465726e6574", - "0004""7f000201", /* replaced with gtphub's ggsn ctrl */ - "0004""7f000202" /* replaced with gtphub's ggsn user */ - ); - - OSMO_ASSERT(msg_from_sgsn_c(&sgsn_sender, - &resolved_ggsn_addr, - gtp_req_from_sgsn2, - gtp_req_to_ggsn2)); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" - " 192.168.42.23 (TEI C=322 U=124)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21946\n" - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21945\n" - )); - - now ++; - - const char *gtp_resp_from_ggsn1 = - MSG_PDP_CTX_RSP("004e", - "00000001", /* destination TEI (sent in req above) */ - "6d31", /* mapped seq */ - "01", /* restart */ - "00000567", /* TEI U */ - "00000765", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn1 = - MSG_PDP_CTX_RSP("004e", - "00000321", /* unmapped TEI ("001") */ - "abcd", /* unmapped seq ("6d31") */ - "23", - "00000001", /* mapped TEI from GGSN ("567") */ - "00000001", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn1, - gtp_resp_to_sgsn1)); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" - " 192.168.42.23 (TEI C=322 U=124)" - " <-> 192.168.43.34/(uninitialized) (TEI C=0 U=0)" - " @21946\n" - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21947\n" - )); - - now ++; - - const char *gtp_resp_from_ggsn2 = - MSG_PDP_CTX_RSP("004e", - "00000002", /* destination TEI (sent in req above) */ - "6d32", /* mapped seq */ - "01", /* restart */ - "00000568", /* TEI U */ - "00000766", /* TEI C */ - "0004""c0a82b22", /* GSN addresses */ - "0004""c0a82b22" /* (== resolved_ggsn_addr) */ - ); - const char *gtp_resp_to_sgsn2 = - MSG_PDP_CTX_RSP("004e", - "00000322", /* unmapped TEI ("001") */ - "abce", /* unmapped seq ("6d31") */ - "23", - "00000002", /* mapped TEI from GGSN ("567") */ - "00000002", /* mapped TEI from GGSN ("765") */ - "0004""7f000101", /* gtphub's address towards SGSNs (Ctrl) */ - "0004""7f000102" /* gtphub's address towards SGSNs (User) */ - ); - - OSMO_ASSERT(msg_from_ggsn_c(&resolved_ggsn_addr, - &sgsn_sender, - gtp_resp_from_ggsn2, - gtp_resp_to_sgsn2)); - - OSMO_ASSERT(tunnels_are( - "TEI=2:" - " 192.168.42.23 (TEI C=322 U=124)" - " <-> 192.168.43.34 (TEI C=766 U=568)" - " @21948\n" - "TEI=1:" - " 192.168.42.23 (TEI C=321 U=123)" - " <-> 192.168.43.34 (TEI C=765 U=567)" - " @21947\n" - )); - - OSMO_ASSERT(clear_test_hub()); -} - - -static struct log_info_cat gtphub_categories[] = { - [DGTPHUB] = { - .name = "DGTPHUB", - .description = "GTP Hub", - .color = "\033[1;33m", - .enabled = 1, .loglevel = LOGL_DEBUG, - }, -}; - -static struct log_info info = { - .cat = gtphub_categories, - .num_cat = ARRAY_SIZE(gtphub_categories), -}; - -int main(int argc, char **argv) -{ - osmo_init_logging(&info); - osmo_gtphub_ctx = talloc_named_const(NULL, 0, "osmo_gtphub"); - - test_nr_map_basic(); - test_nr_map_wrap(); - test_expiry(); - test_echo(); - test_one_pdp_ctx(GTPH_SIDE_SGSN); - test_one_pdp_ctx(GTPH_SIDE_GGSN); - test_user_data(); - test_reused_tei(); - test_peer_restarted(); - test_peer_restarted_reusing_tei(); - test_sgsn_behind_nat(); - test_parallel_context_creation(); - printf("Done\n"); - - talloc_report_full(osmo_gtphub_ctx, stderr); - OSMO_ASSERT(talloc_total_blocks(osmo_gtphub_ctx) == 1); - return 0; -} - |