import gprs_gsup_message.[ch] from openbsc as gsup.[ch]
Move those routines from OpenBSC to libosmogsm, so they can be
re-used from other programs. I think it was a mistake to add them only
inside the openbsc repository in the first place. We need to pay more
attention to this in the future.
diff --git a/tests/gsup/gsup_test.c b/tests/gsup/gsup_test.c
new file mode 100644
index 0000000..2b0a293
--- /dev/null
+++ b/tests/gsup/gsup_test.c
@@ -0,0 +1,264 @@
+#include <string.h>
+
+#include <osmocom/core/logging.h>
+#include <osmocom/core/utils.h>
+#include <osmocom/core/application.h>
+#include <osmocom/gsm/gsup.h>
+
+#define VERBOSE_FPRINTF(...)
+
+/* Tests for osmo_gsup_messages.c */
+
+#define TEST_IMSI_IE 0x01, 0x08, 0x21, 0x43, 0x65, 0x87, 0x09, 0x21, 0x43, 0xf5
+#define TEST_IMSI_STR "123456789012345"
+
+static void test_gsup_messages_dec_enc(void)
+{
+ int test_idx;
+ int rc;
+ uint8_t buf[1024];
+
+ static const uint8_t send_auth_info_req[] = {
+ 0x08,
+ TEST_IMSI_IE
+ };
+
+ static const uint8_t send_auth_info_err[] = {
+ 0x09,
+ TEST_IMSI_IE,
+ 0x02, 0x01, 0x07 /* GPRS no allowed */
+ };
+
+ static const uint8_t send_auth_info_res[] = {
+ 0x0a,
+ TEST_IMSI_IE,
+ 0x03, 0x22, /* Auth tuple */
+ 0x20, 0x10,
+ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+ 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
+ 0x21, 0x04,
+ 0x21, 0x22, 0x23, 0x24,
+ 0x22, 0x08,
+ 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
+ 0x03, 0x22, /* Auth tuple */
+ 0x20, 0x10,
+ 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
+ 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90,
+ 0x21, 0x04,
+ 0xa1, 0xa2, 0xa3, 0xa4,
+ 0x22, 0x08,
+ 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8,
+ };
+
+ static const uint8_t update_location_req[] = {
+ 0x04,
+ TEST_IMSI_IE,
+ };
+
+ static const uint8_t update_location_err[] = {
+ 0x05,
+ TEST_IMSI_IE,
+ 0x02, 0x01, 0x07 /* GPRS no allowed */
+ };
+
+ static const uint8_t update_location_res[] = {
+ 0x06,
+ TEST_IMSI_IE,
+ 0x08, 0x07, /* MSISDN of the subscriber */
+ 0x91, 0x94, 0x61, 0x46, 0x32, 0x24, 0x43,
+ 0x09, 0x07, /* HLR-Number of the subscriber */
+ 0x91, 0x83, 0x52, 0x38, 0x48, 0x83, 0x93,
+ 0x04, 0x00, /* PDP info complete */
+ 0x05, 0x15,
+ 0x10, 0x01, 0x01,
+ 0x11, 0x02, 0xf1, 0x21, /* IPv4 */
+ 0x12, 0x09, 0x04, 't', 'e', 's', 't', 0x03, 'a', 'p', 'n',
+ 0x13, 0x01, 0x02,
+ 0x05, 0x11,
+ 0x10, 0x01, 0x02,
+ 0x11, 0x02, 0xf1, 0x21, /* IPv4 */
+ 0x12, 0x08, 0x03, 'f', 'o', 'o', 0x03, 'a', 'p', 'n',
+ };
+
+ static const uint8_t location_cancellation_req[] = {
+ 0x1c,
+ TEST_IMSI_IE,
+ 0x06, 0x01, 0x00,
+ };
+
+ static const uint8_t location_cancellation_err[] = {
+ 0x1d,
+ TEST_IMSI_IE,
+ 0x02, 0x01, 0x03 /* Illegal MS */
+ };
+
+ static const uint8_t location_cancellation_res[] = {
+ 0x1e,
+ TEST_IMSI_IE,
+ };
+
+ static const uint8_t purge_ms_req[] = {
+ 0x0c,
+ TEST_IMSI_IE,
+ };
+
+ static const uint8_t purge_ms_err[] = {
+ 0x0d,
+ TEST_IMSI_IE,
+ 0x02, 0x01, 0x03, /* Illegal MS */
+ };
+
+ static const uint8_t purge_ms_res[] = {
+ 0x0e,
+ TEST_IMSI_IE,
+ 0x07, 0x00,
+ };
+
+ static const struct test {
+ char *name;
+ const uint8_t *data;
+ size_t data_len;
+ } test_messages[] = {
+ {"Send Authentication Info Request",
+ send_auth_info_req, sizeof(send_auth_info_req)},
+ {"Send Authentication Info Error",
+ send_auth_info_err, sizeof(send_auth_info_err)},
+ {"Send Authentication Info Result",
+ send_auth_info_res, sizeof(send_auth_info_res)},
+ {"Update Location Request",
+ update_location_req, sizeof(update_location_req)},
+ {"Update Location Error",
+ update_location_err, sizeof(update_location_err)},
+ {"Update Location Result",
+ update_location_res, sizeof(update_location_res)},
+ {"Location Cancellation Request",
+ location_cancellation_req, sizeof(location_cancellation_req)},
+ {"Location Cancellation Error",
+ location_cancellation_err, sizeof(location_cancellation_err)},
+ {"Location Cancellation Result",
+ location_cancellation_res, sizeof(location_cancellation_res)},
+ {"Purge MS Request",
+ purge_ms_req, sizeof(purge_ms_req)},
+ {"Purge MS Error",
+ purge_ms_err, sizeof(purge_ms_err)},
+ {"Purge MS Result",
+ purge_ms_res, sizeof(purge_ms_res)},
+ };
+
+ printf("Test GSUP message decoding/encoding\n");
+
+ for (test_idx = 0; test_idx < ARRAY_SIZE(test_messages); test_idx++) {
+ const struct test *t = &test_messages[test_idx];
+ struct osmo_gsup_message gm = {0};
+ struct msgb *msg = msgb_alloc(4096, "gsup_test");
+
+ printf(" Testing %s\n", t->name);
+
+ rc = osmo_gsup_decode(t->data, t->data_len, &gm);
+ OSMO_ASSERT(rc >= 0);
+
+ osmo_gsup_encode(msg, &gm);
+
+ fprintf(stderr, " generated message: %s\n", msgb_hexdump(msg));
+ fprintf(stderr, " original message: %s\n", osmo_hexdump(t->data, t->data_len));
+ fprintf(stderr, " IMSI: %s\n", gm.imsi);
+ OSMO_ASSERT(strcmp(gm.imsi, TEST_IMSI_STR) == 0);
+ OSMO_ASSERT(msgb_length(msg) == t->data_len);
+ OSMO_ASSERT(memcmp(msgb_data(msg), t->data, t->data_len) == 0);
+
+ msgb_free(msg);
+ }
+
+ /* simple truncation test */
+ for (test_idx = 0; test_idx < ARRAY_SIZE(test_messages); test_idx++) {
+ int j;
+ const struct test *t = &test_messages[test_idx];
+ int ie_end = t->data_len;
+ struct osmo_gsup_message gm = {0};
+ int counter = 0;
+ int parse_err = 0;
+
+ for (j = t->data_len - 1; j >= 0; --j) {
+ rc = osmo_gsup_decode(t->data, j, &gm);
+ counter += 1;
+
+ VERBOSE_FPRINTF(stderr,
+ " partial message decoding: "
+ "orig_len = %d, trunc = %d, rc = %d, ie_end = %d\n",
+ t->data_len, j, rc, ie_end);
+ if (rc >= 0) {
+ VERBOSE_FPRINTF(stderr,
+ " remaing partial message: %s\n",
+ osmo_hexdump(t->data + j, ie_end - j));
+
+ OSMO_ASSERT(j <= ie_end - 2);
+ OSMO_ASSERT(t->data[j+0] <= OSMO_GSUP_KC_IE);
+ OSMO_ASSERT(t->data[j+1] <= ie_end - j - 2);
+
+ ie_end = j;
+ } else {
+ parse_err += 1;
+ }
+ }
+
+ fprintf(stderr,
+ " message %d: tested %d truncations, %d parse failures\n",
+ test_idx, counter, parse_err);
+ }
+
+ /* message modification test (relies on ASAN or valgrind being used) */
+ for (test_idx = 0; test_idx < ARRAY_SIZE(test_messages); test_idx++) {
+ int j;
+ const struct test *t = &test_messages[test_idx];
+ struct osmo_gsup_message gm = {0};
+ uint8_t val;
+ int counter = 0;
+ int parse_err = 0;
+
+ OSMO_ASSERT(sizeof(buf) >= t->data_len);
+
+ for (j = t->data_len - 1; j >= 0; --j) {
+ memcpy(buf, t->data, t->data_len);
+ val = 0;
+ do {
+ VERBOSE_FPRINTF(stderr,
+ "t = %d, len = %d, val = %d\n",
+ test_idx, j, val);
+ buf[j] = val;
+ rc = osmo_gsup_decode(buf, t->data_len, &gm);
+ counter += 1;
+ if (rc < 0)
+ parse_err += 1;
+
+ val += 1;
+ } while (val != (uint8_t)256);
+ }
+
+ fprintf(stderr,
+ " message %d: tested %d modifications, %d parse failures\n",
+ test_idx, counter, parse_err);
+ }
+}
+
+const struct log_info_cat default_categories[] = {
+ [DLGSUP] = {
+ .name = "DLGSUP",
+ .description = "Generic Subscriber Update Protocol",
+ .enabled = 0, .loglevel = LOGL_DEBUG,
+ },
+};
+
+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_gsup_messages_dec_enc();
+
+ printf("Done.\n");
+ return EXIT_SUCCESS;
+}