| #include <stdio.h> |
| #include <stdlib.h> |
| #include <inttypes.h> |
| |
| #include <openbsc/gprs_llc.h> |
| #include <openbsc/gprs_utils.h> |
| |
| #define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); } |
| #define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); } |
| |
| /** |
| * GSM 04.64 8.4.2 Receipt of unacknowledged information |
| */ |
| static int nu_is_retransmission(uint16_t nu, uint16_t vur) |
| { |
| int ret = gprs_llc_is_retransmit(nu, vur); |
| printf("N(U) = %d, V(UR) = %d => %s\n", nu, vur, |
| ret == 1 ? "retransmit" : "new"); |
| return ret; |
| } |
| |
| static void test_8_4_2() |
| { |
| printf("Testing gprs_llc_is_retransmit.\n"); |
| |
| ASSERT_FALSE(nu_is_retransmission(0, 0)); |
| ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| |
| /* expect 1... check for retransmissions */ |
| ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| ASSERT_TRUE (nu_is_retransmission(511, 1)); |
| ASSERT_TRUE (nu_is_retransmission(483, 1)); |
| ASSERT_TRUE (nu_is_retransmission(482, 1)); |
| ASSERT_FALSE(nu_is_retransmission(481, 1)); |
| |
| /* expect 511... check for retransmissions */ |
| ASSERT_FALSE(nu_is_retransmission(0, 240)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(0, 511)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(1, 511)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(511, 511)); // same |
| ASSERT_TRUE (nu_is_retransmission(510, 511)); // behind |
| ASSERT_TRUE (nu_is_retransmission(481, 511)); // behind |
| ASSERT_FALSE(nu_is_retransmission(479, 511)); // wrapped |
| } |
| |
| static void apn_round_trip(const uint8_t *input, size_t len, const char *wanted_output) |
| { |
| char output[len ? len : 1]; |
| uint8_t encoded[len + 50]; |
| char *out_str; |
| int enc_len; |
| |
| /* decode and verify we have what we want */ |
| out_str = gprs_apn_to_str(output, input, len); |
| OSMO_ASSERT(out_str); |
| OSMO_ASSERT(out_str == &output[0]); |
| OSMO_ASSERT(strlen(out_str) == strlen(wanted_output)); |
| OSMO_ASSERT(strcmp(out_str, wanted_output) == 0); |
| |
| /* encode and verify it */ |
| if (len != 0) { |
| enc_len = gprs_str_to_apn(encoded, ARRAY_SIZE(encoded), wanted_output); |
| OSMO_ASSERT(enc_len == len); |
| OSMO_ASSERT(memcmp(encoded, input, enc_len) == 0); |
| } else { |
| enc_len = gprs_str_to_apn(encoded, 0, wanted_output); |
| OSMO_ASSERT(enc_len == -1); |
| } |
| } |
| |
| static void test_gsm_03_03_apn(void) |
| { |
| |
| { |
| /* test invalid writes */ |
| const uint8_t ref[10] = { 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF }; |
| uint8_t output[10]; |
| int enc_len; |
| |
| memcpy(output, ref, ARRAY_SIZE(output)); |
| enc_len = gprs_str_to_apn(output, 0, ""); |
| OSMO_ASSERT(enc_len == -1); |
| OSMO_ASSERT(memcmp(ref, output, ARRAY_SIZE(ref)) == 0); |
| |
| memcpy(output, ref, ARRAY_SIZE(output)); |
| enc_len = gprs_str_to_apn(output, 0, "foo"); |
| OSMO_ASSERT(enc_len == -1); |
| OSMO_ASSERT(memcmp(ref, output, ARRAY_SIZE(ref)) == 0); |
| |
| memcpy(output, ref, ARRAY_SIZE(output)); |
| enc_len = gprs_str_to_apn(output, 1, "foo"); |
| OSMO_ASSERT(enc_len == -1); |
| OSMO_ASSERT(memcmp(ref + 1, output + 1, ARRAY_SIZE(ref) - 1) == 0); |
| |
| memcpy(output, ref, ARRAY_SIZE(output)); |
| enc_len = gprs_str_to_apn(output, 2, "foo"); |
| OSMO_ASSERT(enc_len == -1); |
| OSMO_ASSERT(memcmp(ref + 2, output + 2, ARRAY_SIZE(ref) - 2) == 0); |
| |
| memcpy(output, ref, ARRAY_SIZE(output)); |
| enc_len = gprs_str_to_apn(output, 3, "foo"); |
| OSMO_ASSERT(enc_len == -1); |
| OSMO_ASSERT(memcmp(ref + 3, output + 3, ARRAY_SIZE(ref) - 3) == 0); |
| } |
| |
| { |
| /* single empty label */ |
| uint8_t input[] = { 0x0 }; |
| const char *output = ""; |
| apn_round_trip(input, ARRAY_SIZE(input), output); |
| } |
| |
| { |
| /* no label */ |
| uint8_t input[] = { }; |
| const char *output = ""; |
| apn_round_trip(input, ARRAY_SIZE(input), output); |
| } |
| |
| { |
| /* single label with A */ |
| uint8_t input[] = { 0x1, 65 }; |
| const char *output = "A"; |
| apn_round_trip(input, ARRAY_SIZE(input), output); |
| OSMO_ASSERT(gprs_apn_to_str(NULL, input, ARRAY_SIZE(input) - 1) == NULL); |
| } |
| |
| { |
| uint8_t input[] = { 0x3, 65, 66, 67, 0x2, 90, 122 }; |
| const char *output = "ABC.Zz"; |
| char tmp[strlen(output) + 1]; |
| apn_round_trip(input, ARRAY_SIZE(input), output); |
| OSMO_ASSERT(gprs_apn_to_str(tmp, input, ARRAY_SIZE(input) - 1) == NULL); |
| OSMO_ASSERT(gprs_apn_to_str(tmp, input, ARRAY_SIZE(input) - 2) == NULL); |
| OSMO_ASSERT(gprs_apn_to_str(tmp, input, ARRAY_SIZE(input) - 4) == NULL); |
| OSMO_ASSERT(gprs_apn_to_str(tmp, input, ARRAY_SIZE(input) - 5) == NULL); |
| OSMO_ASSERT(gprs_apn_to_str(tmp, input, ARRAY_SIZE(input) - 6) == NULL); |
| } |
| } |
| |
| /* TODO: Move tlv testing to libosmocore */ |
| static void check_tlv_parse(uint8_t **data, size_t *data_len, |
| uint8_t exp_tag, size_t exp_len, const uint8_t *exp_val) |
| { |
| uint8_t *value; |
| size_t value_len; |
| uint8_t tag; |
| int rc; |
| uint8_t *saved_data = *data; |
| size_t saved_data_len = *data_len; |
| |
| rc = gprs_match_tlv(data, data_len, exp_tag ^ 1, NULL, NULL); |
| OSMO_ASSERT(rc == 0); |
| |
| rc = gprs_match_tlv(data, data_len, exp_tag, &value, &value_len); |
| OSMO_ASSERT(rc == (int)value_len + 2); |
| OSMO_ASSERT(value_len == exp_len); |
| OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| |
| /* restore data/data_len */ |
| *data = saved_data; |
| *data_len = saved_data_len; |
| |
| rc = gprs_shift_tlv(data, data_len, &tag, &value, &value_len); |
| OSMO_ASSERT(rc == (int)value_len + 2); |
| OSMO_ASSERT(tag == exp_tag); |
| OSMO_ASSERT(value_len == exp_len); |
| OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| } |
| |
| static void check_tv_fixed_match(uint8_t **data, size_t *data_len, |
| uint8_t tag, size_t len, const uint8_t *exp_val) |
| { |
| uint8_t *value; |
| int rc; |
| |
| rc = gprs_match_tv_fixed(data, data_len, tag ^ 1, len, NULL); |
| OSMO_ASSERT(rc == 0); |
| |
| rc = gprs_match_tv_fixed(data, data_len, tag, len, &value); |
| OSMO_ASSERT(rc == (int)len + 1); |
| OSMO_ASSERT(memcmp(value, exp_val, len) == 0); |
| } |
| |
| static void check_v_fixed_shift(uint8_t **data, size_t *data_len, |
| size_t len, const uint8_t *exp_val) |
| { |
| uint8_t *value; |
| int rc; |
| |
| rc = gprs_shift_v_fixed(data, data_len, len, &value); |
| OSMO_ASSERT(rc == (int)len); |
| OSMO_ASSERT(memcmp(value, exp_val, len) == 0); |
| } |
| |
| static void check_lv_shift(uint8_t **data, size_t *data_len, |
| size_t exp_len, const uint8_t *exp_val) |
| { |
| uint8_t *value; |
| size_t value_len; |
| int rc; |
| |
| rc = gprs_shift_lv(data, data_len, &value, &value_len); |
| OSMO_ASSERT(rc == (int)value_len + 1); |
| OSMO_ASSERT(value_len == exp_len); |
| OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| } |
| |
| static void check_tlv_match_data_len(size_t data_len, uint8_t tag, size_t len, |
| const uint8_t *test_data) |
| { |
| uint8_t buf[300] = {0}; |
| |
| uint8_t *unchanged_ptr = buf - 1; |
| size_t unchanged_len = 0xdead; |
| size_t tmp_data_len = data_len; |
| uint8_t *value = unchanged_ptr; |
| size_t value_len = unchanged_len; |
| uint8_t *data = buf; |
| |
| OSMO_ASSERT(data_len <= sizeof(buf)); |
| |
| tlv_put(data, tag, len, test_data); |
| if (data_len < len + 2) { |
| OSMO_ASSERT(-1 == gprs_match_tlv(&data, &tmp_data_len, |
| tag, &value, &value_len)); |
| OSMO_ASSERT(tmp_data_len == 0); |
| OSMO_ASSERT(data == buf + data_len); |
| OSMO_ASSERT(value == unchanged_ptr); |
| OSMO_ASSERT(value_len == unchanged_len); |
| } else { |
| OSMO_ASSERT(0 <= gprs_match_tlv(&data, &tmp_data_len, |
| tag, &value, &value_len)); |
| OSMO_ASSERT(value != unchanged_ptr); |
| OSMO_ASSERT(value_len != unchanged_len); |
| } |
| } |
| |
| static void check_tv_fixed_match_data_len(size_t data_len, |
| uint8_t tag, size_t len, |
| const uint8_t *test_data) |
| { |
| uint8_t buf[300] = {0}; |
| |
| uint8_t *unchanged_ptr = buf - 1; |
| size_t tmp_data_len = data_len; |
| uint8_t *value = unchanged_ptr; |
| uint8_t *data = buf; |
| |
| OSMO_ASSERT(data_len <= sizeof(buf)); |
| |
| tv_fixed_put(data, tag, len, test_data); |
| |
| if (data_len < len + 1) { |
| OSMO_ASSERT(-1 == gprs_match_tv_fixed(&data, &tmp_data_len, |
| tag, len, &value)); |
| OSMO_ASSERT(tmp_data_len == 0); |
| OSMO_ASSERT(data == buf + data_len); |
| OSMO_ASSERT(value == unchanged_ptr); |
| } else { |
| OSMO_ASSERT(0 <= gprs_match_tv_fixed(&data, &tmp_data_len, |
| tag, len, &value)); |
| OSMO_ASSERT(value != unchanged_ptr); |
| } |
| } |
| |
| static void check_v_fixed_shift_data_len(size_t data_len, |
| size_t len, const uint8_t *test_data) |
| { |
| uint8_t buf[300] = {0}; |
| |
| uint8_t *unchanged_ptr = buf - 1; |
| size_t tmp_data_len = data_len; |
| uint8_t *value = unchanged_ptr; |
| uint8_t *data = buf; |
| |
| OSMO_ASSERT(data_len <= sizeof(buf)); |
| |
| memcpy(data, test_data, len); |
| |
| if (data_len < len) { |
| OSMO_ASSERT(-1 == gprs_shift_v_fixed(&data, &tmp_data_len, |
| len, &value)); |
| OSMO_ASSERT(tmp_data_len == 0); |
| OSMO_ASSERT(data == buf + data_len); |
| OSMO_ASSERT(value == unchanged_ptr); |
| } else { |
| OSMO_ASSERT(0 <= gprs_shift_v_fixed(&data, &tmp_data_len, |
| len, &value)); |
| OSMO_ASSERT(value != unchanged_ptr); |
| } |
| } |
| |
| static void check_lv_shift_data_len(size_t data_len, |
| size_t len, const uint8_t *test_data) |
| { |
| uint8_t buf[300] = {0}; |
| |
| uint8_t *unchanged_ptr = buf - 1; |
| size_t unchanged_len = 0xdead; |
| size_t tmp_data_len = data_len; |
| uint8_t *value = unchanged_ptr; |
| size_t value_len = unchanged_len; |
| uint8_t *data = buf; |
| |
| lv_put(data, len, test_data); |
| if (data_len < len + 1) { |
| OSMO_ASSERT(-1 == gprs_shift_lv(&data, &tmp_data_len, |
| &value, &value_len)); |
| OSMO_ASSERT(tmp_data_len == 0); |
| OSMO_ASSERT(data == buf + data_len); |
| OSMO_ASSERT(value == unchanged_ptr); |
| OSMO_ASSERT(value_len == unchanged_len); |
| } else { |
| OSMO_ASSERT(0 <= gprs_shift_lv(&data, &tmp_data_len, |
| &value, &value_len)); |
| OSMO_ASSERT(value != unchanged_ptr); |
| OSMO_ASSERT(value_len != unchanged_len); |
| } |
| } |
| |
| static void test_tlv_shift_functions() |
| { |
| uint8_t test_data[1024]; |
| uint8_t buf[1024]; |
| uint8_t *data_end; |
| unsigned i, len; |
| uint8_t *data; |
| size_t data_len; |
| const uint8_t tag = 0x1a; |
| |
| printf("Test shift functions\n"); |
| |
| for (i = 0; i < ARRAY_SIZE(test_data); i++) |
| test_data[i] = (uint8_t)i; |
| |
| for (len = 0; len < 256; len++) { |
| const unsigned iterations = sizeof(buf) / (len + 2) / 4; |
| |
| memset(buf, 0xee, sizeof(buf)); |
| data_end = data = buf; |
| |
| for (i = 0; i < iterations; i++) { |
| data_end = tlv_put(data_end, tag, len, test_data); |
| data_end = tv_fixed_put(data_end, tag, len, test_data); |
| /* v_fixed_put */ |
| memcpy(data_end, test_data, len); |
| data_end += len; |
| data_end = lv_put(data_end, len, test_data); |
| } |
| |
| data_len = data_end - data; |
| OSMO_ASSERT(data_len <= sizeof(buf)); |
| |
| for (i = 0; i < iterations; i++) { |
| check_tlv_parse(&data, &data_len, tag, len, test_data); |
| check_tv_fixed_match(&data, &data_len, tag, len, test_data); |
| check_v_fixed_shift(&data, &data_len, len, test_data); |
| check_lv_shift(&data, &data_len, len, test_data); |
| } |
| |
| OSMO_ASSERT(data == data_end); |
| |
| /* Test at end of data */ |
| |
| OSMO_ASSERT(-1 == gprs_match_tlv(&data, &data_len, tag, NULL, NULL)); |
| OSMO_ASSERT(-1 == gprs_match_tv_fixed(&data, &data_len, tag, len, NULL)); |
| OSMO_ASSERT((len ? -1 : 0) == gprs_shift_v_fixed(&data, &data_len, len, NULL)); |
| OSMO_ASSERT(-1 == gprs_shift_lv(&data, &data_len, NULL, NULL)); |
| |
| /* Test invalid data_len */ |
| for (data_len = 0; data_len <= len + 2 + 1; data_len += 1) { |
| check_tlv_match_data_len(data_len, tag, len, test_data); |
| check_tv_fixed_match_data_len(data_len, tag, len, test_data); |
| check_v_fixed_shift_data_len(data_len, len, test_data); |
| check_lv_shift_data_len(data_len, len, test_data); |
| } |
| } |
| } |
| |
| int main(int argc, char **argv) |
| { |
| test_8_4_2(); |
| test_gsm_03_03_apn(); |
| test_tlv_shift_functions(); |
| |
| printf("Done.\n"); |
| return EXIT_SUCCESS; |
| } |