162 lines
4.8 KiB
C
162 lines
4.8 KiB
C
/* LLC XID codec tests
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*
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* (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* Author: Vadim Yanitskiy <vyanitskiy@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <osmocom/core/application.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/gprs/llc/llc.h>
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#include <osmocom/gprs/llc/llc_private.h>
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static void *tall_ctx = NULL;
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static void print_xid_fields(const struct gprs_llc_xid_field *fields,
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unsigned int num_fields)
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{
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for (unsigned int i = 0; i < num_fields; i++) {
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const struct gprs_llc_xid_field *field = &fields[i];
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printf(" field[%02d]: type=0x%02x (%s)",
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i, field->type, gprs_llc_xid_type_name(field->type));
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if (field->type == OSMO_GPRS_LLC_XID_T_L3_PAR) {
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printf(" data[] (len=%u): %s\n", field->var.val_len,
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osmo_hexdump_nospc(field->var.val, field->var.val_len));
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} else {
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printf(" val=%u\n", field->val);
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}
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}
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}
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static void test_xid_dec_enc(void)
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{
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static const char * const testData[] = {
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/* TODO: more test vectors */
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"25401602082c",
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"16020825402c",
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"01001601f41a05df",
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"01001605f01a05f0ac18112233445566",
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"01001601f41a02081e00002200002908",
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};
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struct msgb *msg = msgb_alloc(1024, "LLC-XID");
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OSMO_ASSERT(msg != NULL);
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for (unsigned int i = 0; i < ARRAY_SIZE(testData); i++) {
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struct gprs_llc_xid_field fields[16] = { 0 };
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uint8_t xid[256];
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size_t xid_len;
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int rc;
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printf("%s(): decoding testData[%u] = %s\n", __func__, i, testData[i]);
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rc = osmo_hexparse(testData[i], &xid[0], sizeof(xid));
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xid_len = strlen(testData[i]) / 2;
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OSMO_ASSERT(rc == xid_len);
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rc = gprs_llc_xid_decode(fields, ARRAY_SIZE(fields),
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&xid[0], xid_len);
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printf(" gprs_llc_xid_decode() returns %d\n", rc);
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if (rc > 0)
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print_xid_fields(&fields[0], rc);
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else
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continue;
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printf("%s(): encoding decoded testData[%u]\n", __func__, i);
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msgb_reset(msg);
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rc = gprs_llc_xid_encode(msgb_data(msg), msgb_tailroom(msg), fields, rc);
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printf(" gprs_llc_xid_encode() returns %d\n", rc);
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if (rc < 0)
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continue;
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msgb_put(msg, rc);
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printf(" gprs_llc_xid_encode(): %s\n", osmo_hexdump_nospc(msg->data, msg->len));
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printf(" memcmp() returns %d\n", memcmp(&xid, msg->data, xid_len));
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}
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msgb_free(msg);
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printf("\n");
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}
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static void test_xid_enc_dec(void)
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{
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struct gprs_llc_xid_field dec_fields[16] = { 0 };
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int rc;
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uint8_t l3_params[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 };
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const struct gprs_llc_xid_field test_fields[] = {
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{ .type = OSMO_GPRS_LLC_XID_T_VERSION, .val = 0 },
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{ .type = OSMO_GPRS_LLC_XID_T_T200, .val = 4095 },
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{ .type = OSMO_GPRS_LLC_XID_T_N200, .val = 10 },
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{ .type = OSMO_GPRS_LLC_XID_T_IOV_I, .val = 0x42424242 },
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{ .type = OSMO_GPRS_LLC_XID_T_IOV_UI, .val = 0xdeadbeef },
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{ .type = OSMO_GPRS_LLC_XID_T_L3_PAR,
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.var = { .val_len = sizeof(l3_params), .val = &l3_params[0] } },
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{ .type = OSMO_GPRS_LLC_XID_T_RESET },
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};
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struct msgb *msg = msgb_alloc(1024, "LLC-XID");
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OSMO_ASSERT(msg != NULL);
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printf("%s(): encoding hand-crafted testData\n", __func__);
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rc = gprs_llc_xid_encode(msgb_data(msg), msgb_tailroom(msg), &test_fields[0], ARRAY_SIZE(test_fields));
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printf(" gprs_llc_xid_encode() returns %d\n", rc);
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OSMO_ASSERT(rc > 0);
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msgb_put(msg, rc);
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printf(" gprs_llc_xid_encode(): %s\n", osmo_hexdump_nospc(msg->data, msg->len));
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printf("%s(): decoding encoded hand-crafted testData\n", __func__);
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rc = gprs_llc_xid_decode(&dec_fields[0], ARRAY_SIZE(dec_fields),
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msg->data, msg->len);
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printf(" gprs_llc_xid_decode() returns %d\n", rc);
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if (rc > 0)
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print_xid_fields(&dec_fields[0], rc);
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msgb_free(msg);
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printf("\n");
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}
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static const struct log_info_cat test_log_categories[] = { };
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static const struct log_info test_log_info = {
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.cat = test_log_categories,
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.num_cat = ARRAY_SIZE(test_log_categories),
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};
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int main(int argc, char *argv[])
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{
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tall_ctx = talloc_named_const(NULL, 1, __FILE__);
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osmo_init_logging2(tall_ctx, &test_log_info);
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log_parse_category_mask(osmo_stderr_target, "DLGLOBAL,1:");
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log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_NONE);
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log_set_print_category_hex(osmo_stderr_target, 0);
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log_set_print_category(osmo_stderr_target, 1);
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log_set_print_level(osmo_stderr_target, 1);
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log_set_use_color(osmo_stderr_target, 0);
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test_xid_dec_enc();
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test_xid_enc_dec();
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talloc_free(tall_ctx);
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}
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