LCLS, TS 29.205: add GCR routines
Add functions to encode and decode Global Call Reference as per
3GPP TS 29.205 Table B 2.1.9.1 add corresponding tests.
Change-Id: Iee95aa4e5c056645b6cb5667e4a067097d52dfbf
Related: OS#2487
diff --git a/tests/gsm29205/gsm29205_test.c b/tests/gsm29205/gsm29205_test.c
new file mode 100644
index 0000000..5add1b1
--- /dev/null
+++ b/tests/gsm29205/gsm29205_test.c
@@ -0,0 +1,107 @@
+/*
+ * (C) 2018 by sysmocom - s.f.m.c. GmbH
+ * All Rights Reserved
+ *
+ * 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/gsm/gsm29205.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/gsm/protocol/gsm_08_08.h>
+#include <osmocom/gsm/gsm0808.h>
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/application.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <errno.h>
+
+static void test_gcr()
+{
+ static const uint8_t res[] = {
+ 0x03, /* .net_len */
+ 0x51, 0x52, 0x53, /* .net */
+ 0x02, /* .node length */
+ 0xde, 0xad, /* .node */
+ 0x05, /* length of Call. Ref. */
+ 0x41, 0x42, 0x43, 0x44, 0x45 /* .cr - Call. Ref. */
+ };
+ uint8_t len;
+ struct msgb *msg;
+ struct osmo_gcr_parsed p = { 0 }, g = {
+ .net_len = 3,
+ .net = { 0x51, 0x52, 0x53 },
+ .node = 0xDEAD,
+ .cr = { 0x41, 0x42, 0x43, 0x44, 0x45 }
+ };
+ int rc;
+
+ msg = msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM, "global call reference");
+ if (!msg)
+ return;
+
+ len = osmo_enc_gcr(msg, &g);
+ printf("Testing Global Call Reference encoder...\n\t%d bytes added: %s\n",
+ len, len == ARRAY_SIZE(res) ? "OK" : "FAIL");
+
+ if (!msgb_eq_data_print(msg, res, ARRAY_SIZE(res)))
+ abort();
+
+ rc = osmo_dec_gcr(&p, msgb_data(msg), msgb_length(msg));
+ if (rc < 0) {
+ printf("decoding failed: %s [%s]\n", strerror(-rc), msgb_hexdump(msg));
+ abort();
+ }
+
+ if (p.net_len != g.net_len) {
+ printf("Network ID length parsed wrong: %u != %u\n", p.net_len, g.net_len);
+ abort();
+ }
+
+ if (p.node != g.node) {
+ printf("Node ID parsed wrong: 0x%X != 0x%X\n", p.node, g.node);
+ abort();
+ }
+
+ if (memcmp(p.net, g.net, g.net_len) != 0) {
+ printf("Network ID parsed wrong: %s\n", osmo_hexdump(p.net, p.net_len));
+ abort();
+ }
+
+ if (memcmp(p.cr, g.cr, 5) != 0) {
+ printf("Call ref. ID parsed wrong: %s\n", osmo_hexdump(p.cr, 5));
+ abort();
+ }
+
+ printf("\tdecoded %d bytes: %s\n", rc, rc == len ? "OK" : "FAIL");
+ msgb_free(msg);
+}
+
+int main(int argc, char **argv)
+{
+ osmo_init_logging2(talloc_named_const(NULL, 0, "gsm29205 test"), NULL);
+
+ printf("Testing 3GPP TS 29.205 routines...\n");
+
+ test_gcr();
+
+ printf("Done.\n");
+
+ return EXIT_SUCCESS;
+}