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/* Test LLC-XID Encoding/Decoding */
/* (C) 2016 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Philipp Maier
*
* 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 <openbsc/gprs_llc_xid.h>
#include <openbsc/debug.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/application.h>
#include <stdio.h>
#include <string.h>
/* Test XID encoding */
static void test_xid_encode(const void *ctx)
{
struct gprs_llc_xid_field xid_field_1;
struct gprs_llc_xid_field xid_field_2;
struct gprs_llc_xid_field xid_field_3;
struct gprs_llc_xid_field xid_field_4;
LLIST_HEAD(xid_fields);
uint8_t xid[255];
uint8_t xid_expected[] =
{ 0x10, 0x8c, 0x14, 0x43, 0x43, 0x43, 0x43, 0x43, 0x0b, 0x42, 0x42,
0x42, 0x05, 0x41 };
int rc;
printf("Testing LLC XID-Encoder\n");
/* Setup some simple XID data */
xid_field_1.type = 1;
xid_field_2.type = 2;
xid_field_3.type = 3;
xid_field_4.type = 4;
xid_field_1.data = (uint8_t *) "A";
xid_field_2.data = (uint8_t *) "BBB";
xid_field_3.data = (uint8_t *) "CCCCC";
xid_field_4.data = NULL;
xid_field_1.data_len = 1;
xid_field_2.data_len = 3;
xid_field_3.data_len = 5;
xid_field_4.data_len = 0;
llist_add(&xid_field_4.list, &xid_fields);
llist_add(&xid_field_3.list, &xid_fields);
llist_add(&xid_field_2.list, &xid_fields);
llist_add(&xid_field_1.list, &xid_fields);
printf("Data to encode:\n");
gprs_llc_dump_xid_fields(&xid_fields, DSNDCP);
/* Encode data */
rc = gprs_llc_compile_xid(xid, sizeof(xid), &xid_fields);
OSMO_ASSERT(rc == 14);
printf("Encoded: %s (%i bytes)\n", osmo_hexdump_nospc(xid, rc), rc);
printf("Expected: %s (%i bytes)\n",
osmo_hexdump_nospc(xid_expected, sizeof(xid_expected)),
(int)sizeof(xid_expected));
OSMO_ASSERT(memcmp(xid_expected, xid, sizeof(xid_expected)) == 0);
printf("\n");
}
/* Test XID decoding */
static void test_xid_decode(const void *ctx)
{
struct llist_head *xid_fields;
int rc;
printf("Testing LLC XID-Decoder/Encoder\n");
/* Example of a real world LLC-XID message */
uint8_t xid[] =
{ 0x01, 0x00, 0x16, 0x05, 0xf0, 0x1a, 0x05, 0xf0, 0xac, 0xd8, 0x00,
0x01, 0x00, 0x02, 0x31, 0x82, 0x02, 0x27, 0x89, 0xff, 0xe0, 0x00, 0x0f,
0x00, 0xa8, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x02, 0x01, 0x02,
0x00, 0x03, 0x01, 0x03, 0x00, 0x04, 0x01, 0x04, 0x00, 0x05, 0x01, 0x05,
0x00, 0x06, 0x00, 0x07, 0x01, 0x07, 0x00, 0x08, 0x01, 0x08, 0x80, 0x00,
0x04, 0x12, 0x00, 0x40, 0x07 };
uint8_t xid_r[512];
/* Decode and display XID fields */
xid_fields = gprs_llc_parse_xid(ctx, xid, sizeof(xid));
OSMO_ASSERT(xid_fields);
printf("Decoded:\n");
gprs_llc_dump_xid_fields(xid_fields, DSNDCP);
/* Encode xid-fields again */
rc = gprs_llc_compile_xid(xid_r, sizeof(xid_r), xid_fields);
printf("Result length=%i\n",rc);
printf("Encoded: %s\n", osmo_hexdump_nospc(xid, sizeof(xid)));
printf("Rencoded: %s\n", osmo_hexdump_nospc(xid_r, rc));
OSMO_ASSERT(rc == 64);
OSMO_ASSERT(memcmp(xid, xid_r, sizeof(xid)) == 0);
/* Free xid fields */
talloc_free(xid_fields);
printf("\n");
}
static struct log_info_cat gprs_categories[] = {
[DSNDCP] = {
.name = "DSNDCP",
.description =
"GPRS Sub-Network Dependent Control Protocol (SNDCP)",
.enabled = 1,.loglevel = LOGL_DEBUG,
}
};
static struct log_info info = {
.cat = gprs_categories,
.num_cat = ARRAY_SIZE(gprs_categories),
};
int main(int argc, char **argv)
{
void *xid_ctx;
osmo_init_logging(&info);
xid_ctx = talloc_named_const(NULL, 0, "xid_ctx");
test_xid_decode(xid_ctx);
test_xid_encode(xid_ctx);
printf("Done\n");
talloc_report_full(xid_ctx, stderr);
OSMO_ASSERT(talloc_total_blocks(xid_ctx) == 1);
return 0;
}
/* stubs */
struct osmo_prim_hdr;
int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
abort();
}
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