sgsn: Add support for authentication triplets
This commit add data structures, functions, initialization, and VTY
commands for per subscriber authentication triplets.
The following VTY command is added:
- update-subscriber imsi IMSI \
insert auth-triplet <1-5> sres SRES rand RAND kc KC
Note that the triplets are not really used by the SGSN yet.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/tests/sgsn/sgsn_test.c b/openbsc/tests/sgsn/sgsn_test.c
index f5f6820..b4f6fdb 100644
--- a/openbsc/tests/sgsn/sgsn_test.c
+++ b/openbsc/tests/sgsn/sgsn_test.c
@@ -249,6 +249,70 @@
update_subscriber_data_cb = __real_sgsn_update_subscriber_data;
}
+static void test_auth_triplets(void)
+{
+ struct gsm_subscriber *s1, *s1found;
+ const char *imsi1 = "1234567890";
+ struct gsm_auth_tuple *at;
+ struct sgsn_mm_ctx *ctx;
+ struct gprs_ra_id raid = { 0, };
+ uint32_t local_tlli = 0xffeeddcc;
+ struct gprs_llc_llme *llme;
+
+ printf("Testing authentication triplet handling\n");
+
+ /* Check for emptiness */
+ OSMO_ASSERT(gprs_subscr_get_by_imsi(imsi1) == NULL);
+
+ /* Allocate entry 1 */
+ s1 = gprs_subscr_get_or_create(imsi1);
+ s1->flags |= GSM_SUBSCRIBER_FIRST_CONTACT;
+ s1found = gprs_subscr_get_by_imsi(imsi1);
+ OSMO_ASSERT(s1found == s1);
+ subscr_put(s1found);
+
+ /* Create a context */
+ OSMO_ASSERT(count(gprs_llme_list()) == 0);
+ ctx = alloc_mm_ctx(local_tlli, &raid);
+
+ /* Attach s1 to ctx */
+ ctx->subscr = subscr_get(s1);
+ ctx->subscr->sgsn_data->mm = ctx;
+
+ /* Try to get auth tuple */
+ at = sgsn_auth_get_tuple(ctx, GSM_KEY_SEQ_INVAL);
+ OSMO_ASSERT(at == NULL);
+
+ /* Add triplets */
+ s1->sgsn_data->auth_triplets[0].key_seq = 0;
+ s1->sgsn_data->auth_triplets[1].key_seq = 1;
+ s1->sgsn_data->auth_triplets[2].key_seq = 2;
+
+ /* Try to get auth tuple */
+ at = sgsn_auth_get_tuple(ctx, GSM_KEY_SEQ_INVAL);
+ OSMO_ASSERT(at != NULL);
+ OSMO_ASSERT(at->key_seq == 0);
+ OSMO_ASSERT(at->use_count == 1);
+ at = sgsn_auth_get_tuple(ctx, at->key_seq);
+ OSMO_ASSERT(at != NULL);
+ OSMO_ASSERT(at->key_seq == 1);
+ OSMO_ASSERT(at->use_count == 1);
+ at = sgsn_auth_get_tuple(ctx, at->key_seq);
+ OSMO_ASSERT(at != NULL);
+ OSMO_ASSERT(at->key_seq == 2);
+ OSMO_ASSERT(at->use_count == 1);
+ at = sgsn_auth_get_tuple(ctx, at->key_seq);
+ OSMO_ASSERT(at == NULL);
+
+ /* Free MM context and subscriber */
+ subscr_put(s1);
+ llme = ctx->llme;
+ sgsn_mm_ctx_free(ctx);
+ s1found = gprs_subscr_get_by_imsi(imsi1);
+ OSMO_ASSERT(s1found == NULL);
+ gprs_llgmm_assign(llme, local_tlli, 0xffffffff, GPRS_ALGO_GEA0, NULL);
+}
+
/*
* Test that a GMM Detach will remove the MMCTX and the
* associated LLME.
@@ -1159,6 +1223,7 @@
test_llme();
test_subscriber();
+ test_auth_triplets();
test_gmm_detach();
test_gmm_detach_power_off();
test_gmm_detach_no_mmctx();