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/* Test Osmocom Authentication Protocol */
/*
* (C) 2016 by sysmocom s.f.m.c. GmbH
* All Rights Reserved
*
* Author: Neels Hofmeyr
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <osmocom/core/application.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/utils.h>
#include <osmocom/gsm/oap.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
static struct msgb *oap_encoded(const struct osmo_oap_message *oap_msg)
{
struct msgb *msgb = msgb_alloc_headroom(1000, 64, __func__);
OSMO_ASSERT(msgb);
osmo_oap_encode(msgb, oap_msg);
return msgb;
}
static bool encode_decode_makes_same_msg(struct osmo_oap_message *oap_msg)
{
struct osmo_oap_message oap_msg_decoded;
struct msgb *msgb;
int rc;
bool result;
memset(&oap_msg_decoded, 0, sizeof(oap_msg_decoded));
msgb = oap_encoded(oap_msg);
printf("encoded message:\n%s\n",
osmo_hexdump((void*)msgb_l2(msgb), msgb_l2len(msgb)));
rc = osmo_oap_decode(&oap_msg_decoded, msgb_l2(msgb), msgb_l2len(msgb));
if (rc) {
printf("osmo_oap_decode() returned error: %d\n", rc);
result = false;
goto free_msgb;
}
rc = memcmp(oap_msg, &oap_msg_decoded, sizeof(oap_msg_decoded));
if (rc) {
printf("decoded message mismatches encoded message\n");
printf("original:\n%s\n",
osmo_hexdump((void*)oap_msg, sizeof(*oap_msg)));
printf("en- and decoded:\n%s\n",
osmo_hexdump((void*)&oap_msg_decoded, sizeof(oap_msg_decoded)));
result = false;
goto free_msgb;
}
printf("ok\n");
result = true;
free_msgb:
talloc_free(msgb);
return result;
}
static void test_oap_messages_dec_enc(void)
{
printf("Testing OAP messages\n");
struct osmo_oap_message oap_msg;
#define CLEAR() memset(&oap_msg, 0, sizeof(oap_msg))
#define CHECK() OSMO_ASSERT(encode_decode_makes_same_msg(&oap_msg))
printf("- Register Request\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_REGISTER_REQUEST;
oap_msg.client_id = 0x2342;
CHECK();
printf("- Register Error\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_REGISTER_ERROR;
oap_msg.cause = GMM_CAUSE_PROTO_ERR_UNSPEC;
CHECK();
printf("- Register Result\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_REGISTER_RESULT;
CHECK();
printf("- Challenge Request, no rand, no autn\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_REQUEST;
oap_msg.rand_present = 0;
oap_msg.autn_present = 0;
CHECK();
printf("- Challenge Request, with rand, no autn\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_REQUEST;
osmo_hexparse("0102030405060708090a0b0c0d0e0f10",
oap_msg.rand, 16);
oap_msg.rand_present = 1;
oap_msg.autn_present = 0;
CHECK();
printf("- Challenge Request, no rand, with autn\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_REQUEST;
oap_msg.rand_present = 0;
osmo_hexparse("cec4e3848a33000086781158ca40f136",
oap_msg.autn, 16);
oap_msg.autn_present = 1;
CHECK();
printf("- Challenge Request, with rand, with autn\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_REQUEST;
osmo_hexparse("0102030405060708090a0b0c0d0e0f10",
oap_msg.rand, 16);
oap_msg.rand_present = 1;
osmo_hexparse("cec4e3848a33000086781158ca40f136",
oap_msg.autn, 16);
oap_msg.autn_present = 1;
CHECK();
printf("- Challenge Error\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_ERROR;
oap_msg.cause = GMM_CAUSE_GSM_AUTH_UNACCEPT;
CHECK();
printf("- Challenge Result\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_CHALLENGE_RESULT;
osmo_hexparse("0102030405060708",
oap_msg.xres, 8);
oap_msg.xres_present = 1;
CHECK();
printf("- Sync Request\n");
CLEAR();
oap_msg.message_type = OAP_MSGT_SYNC_REQUEST;
osmo_hexparse("102030405060708090a0b0c0d0e0f001",
oap_msg.auts, 16);
oap_msg.auts_present = 1;
CHECK();
/* Sync Error and Sync Result are not used in OAP */
}
const struct log_info_cat default_categories[] = {
};
static struct log_info info = {
.cat = default_categories,
.num_cat = ARRAY_SIZE(default_categories),
};
int main(int argc, char **argv)
{
osmo_init_logging(&info);
test_oap_messages_dec_enc();
printf("Done.\n");
return EXIT_SUCCESS;
}
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