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sgsn/test: Add test that intercepts gprs_gsup_client_send

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This test replaces gprs_gsup_client_send by a custom function, that
emulates a GSUP remote peer by calling gprs_subscr_rx_gsup_message
with responses for all requests. It then executes a full
Attach/Detach cycle.

Sponsored-by: On-Waves ehf
This commit is contained in:
Jacob Erlbeck
2015-01-09 15:07:16 +01:00
committed by Holger Hans Peter Freyther
parent 0f47b8fae7
commit c157ee7d2c
3 changed files with 101 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
openbsc/tests/sgsn/Makefile.am
View File

@@ -9,7 +9,8 @@ sgsn_test_SOURCES = sgsn_test.c
sgsn_test_LDFLAGS = \
-Wl,--wrap=sgsn_update_subscriber_data \
-Wl,--wrap=gprs_subscr_request_update_location \
-Wl,--wrap=gprs_subscr_request_auth_info
-Wl,--wrap=gprs_subscr_request_auth_info \
-Wl,--wrap=gprs_gsup_client_send
sgsn_test_LDADD = \
$(top_builddir)/src/gprs/gprs_llc_parse.o \

100
openbsc/tests/sgsn/sgsn_test.c
View File

@@ -24,6 +24,8 @@
#include <openbsc/gprs_gmm.h>
#include <openbsc/debug.h>
#include <openbsc/gsm_subscriber.h>
#include <openbsc/gprs_gsup_messages.h>
#include <openbsc/gprs_gsup_client.h>
#include <osmocom/gprs/gprs_bssgp.h>
@@ -88,6 +90,16 @@ int __wrap_gprs_subscr_request_auth_info(struct sgsn_mm_ctx *mmctx) {
return (*subscr_request_auth_info_cb)(mmctx);
};
/* override, requires '-Wl,--wrap=gprs_gsup_client_send' */
int __real_gprs_gsup_client_send(struct gprs_gsup_client *gsupc, struct msgb *msg);
int (*gprs_gsup_client_send_cb)(struct gprs_gsup_client *gsupc, struct msgb *msg) =
&__real_gprs_gsup_client_send;
int __wrap_gprs_gsup_client_send(struct gprs_gsup_client *gsupc, struct msgb *msg)
{
return (*gprs_gsup_client_send_cb)(gsupc, msg);
};
static int count(struct llist_head *head)
{
struct llist_head *cur;
@@ -1004,7 +1016,7 @@ int my_subscr_request_auth_info_gsup_auth(struct sgsn_mm_ctx *mmctx)
0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
};
OSMO_ASSERT(mmctx->subscr);
OSMO_ASSERT(!mmctx || mmctx->subscr);
if (auth_info_skip > 0) {
auth_info_skip -= 1;
@@ -1028,7 +1040,7 @@ int my_subscr_request_update_gsup_auth(struct sgsn_mm_ctx *mmctx) {
0x12, 0x09, 0x04, 't', 'e', 's', 't', 0x03, 'a', 'p', 'n',
};
OSMO_ASSERT(mmctx->subscr);
OSMO_ASSERT(!mmctx || mmctx->subscr);
if (upd_loc_skip > 0) {
upd_loc_skip -= 1;
@@ -1073,6 +1085,89 @@ static void test_gmm_attach_subscr_gsup_auth(int retry)
auth_info_skip = 0;
}
int my_gprs_gsup_client_send(struct gprs_gsup_client *gsupc, struct msgb *msg)
{
struct gprs_gsup_message to_peer;
struct gprs_gsup_message from_peer;
struct msgb *reply_msg;
/* Simulate the GSUP peer */
gprs_gsup_decode(msgb_data(msg), msgb_length(msg), &to_peer);
/* This invalidates the pointers in to_peer */
msgb_free(msg);
switch (to_peer.message_type) {
case GPRS_GSUP_MSGT_UPDATE_LOCATION_REQUEST:
/* Send UPDATE_LOCATION_RESULT */
return my_subscr_request_update_gsup_auth(NULL);
case GPRS_GSUP_MSGT_SEND_AUTH_INFO_REQUEST:
/* Send SEND_AUTH_INFO_RESULT */
return my_subscr_request_auth_info_gsup_auth(NULL);
case GPRS_GSUP_MSGT_PURGE_MS_REQUEST:
/* TODO: send RES/ERR */
return 0;
default:
if ((to_peer.message_type & 0b00000011) == 0) {
/* Unhandled request */
/* TODO: send error(NOT_IMPL) */
from_peer.message_type = to_peer.message_type + 1;
from_peer.cause = GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL;
break;
}
/* Ignore it */
return 0;
}
reply_msg = gprs_gsup_msgb_alloc();
reply_msg->l2h = reply_msg->data;
gprs_gsup_encode(reply_msg, &from_peer);
gprs_subscr_rx_gsup_message(reply_msg);
msgb_free(reply_msg);
return 0;
};
static void test_gmm_attach_subscr_real_gsup_auth(int retry)
{
const enum sgsn_auth_policy saved_auth_policy = sgsn->cfg.auth_policy;
struct gsm_subscriber *subscr;
sgsn_inst.cfg.auth_policy = SGSN_AUTH_POLICY_REMOTE;
sgsn_inst.cfg.subscriber_expiry_timeout = 0;
gprs_gsup_client_send_cb = my_gprs_gsup_client_send;
sgsn->gsup_client = talloc_zero(tall_bsc_ctx, struct gprs_gsup_client);
if (retry) {
upd_loc_skip = 3;
auth_info_skip = 3;
}
printf("Auth policy 'remote', real GSUP based auth: ");
test_gmm_attach(retry);
subscr = gprs_subscr_get_by_imsi("123456789012345");
OSMO_ASSERT(subscr != NULL);
gprs_subscr_delete(subscr);
osmo_timers_update();
OSMO_ASSERT(gprs_subscr_get_by_imsi("123456789012345") == NULL);
sgsn->cfg.auth_policy = saved_auth_policy;
sgsn_inst.cfg.subscriber_expiry_timeout = SGSN_TIMEOUT_NEVER;
gprs_gsup_client_send_cb = __real_gprs_gsup_client_send;
upd_loc_skip = 0;
auth_info_skip = 0;
talloc_free(sgsn->gsup_client);
sgsn->gsup_client = NULL;
}
/*
* Test the GMM Rejects
*/
@@ -1600,6 +1695,7 @@ int main(int argc, char **argv)
test_gmm_attach_subscr_real_auth();
test_gmm_attach_subscr_gsup_auth(0);
test_gmm_attach_subscr_gsup_auth(1);
test_gmm_attach_subscr_real_gsup_auth(0);
test_gmm_reject();
test_gmm_cancel();
test_gmm_ptmsi_allocation();

1
openbsc/tests/sgsn/sgsn_test.ok
View File

@@ -13,6 +13,7 @@ Auth policy 'remote', auth faked: Testing GMM attach
Auth policy 'remote', triplet based auth: Testing GMM attach
Auth policy 'remote', GSUP based auth: Testing GMM attach
Auth policy 'remote', GSUP based auth: Testing GMM attach with retry
Auth policy 'remote', real GSUP based auth: Testing GMM attach
Testing GMM reject
- Attach Request (invalid MI length)
- Attach Request (invalid MI type)