Harald Welte | fbd02fa | 2016-04-25 15:19:35 +0200 | [diff] [blame] | 1 | #include <osmocom/gsm/tlv.h> |
| 2 | |
| 3 | static void check_tlv_parse(uint8_t **data, size_t *data_len, |
| 4 | uint8_t exp_tag, size_t exp_len, const uint8_t *exp_val) |
| 5 | { |
| 6 | uint8_t *value; |
| 7 | size_t value_len; |
| 8 | uint8_t tag; |
| 9 | int rc; |
| 10 | uint8_t *saved_data = *data; |
| 11 | size_t saved_data_len = *data_len; |
| 12 | |
| 13 | rc = osmo_match_shift_tlv(data, data_len, exp_tag ^ 1, NULL, NULL); |
| 14 | OSMO_ASSERT(rc == 0); |
| 15 | |
| 16 | rc = osmo_match_shift_tlv(data, data_len, exp_tag, &value, &value_len); |
| 17 | OSMO_ASSERT(rc == (int)value_len + 2); |
| 18 | OSMO_ASSERT(value_len == exp_len); |
| 19 | OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| 20 | |
| 21 | /* restore data/data_len */ |
| 22 | *data = saved_data; |
| 23 | *data_len = saved_data_len; |
| 24 | |
| 25 | rc = osmo_shift_tlv(data, data_len, &tag, &value, &value_len); |
| 26 | OSMO_ASSERT(rc == (int)value_len + 2); |
| 27 | OSMO_ASSERT(tag == exp_tag); |
| 28 | OSMO_ASSERT(value_len == exp_len); |
| 29 | OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| 30 | } |
| 31 | |
| 32 | static void check_tv_fixed_match(uint8_t **data, size_t *data_len, |
| 33 | uint8_t tag, size_t len, const uint8_t *exp_val) |
| 34 | { |
| 35 | uint8_t *value; |
| 36 | int rc; |
| 37 | |
| 38 | rc = osmo_match_shift_tv_fixed(data, data_len, tag ^ 1, len, NULL); |
| 39 | OSMO_ASSERT(rc == 0); |
| 40 | |
| 41 | rc = osmo_match_shift_tv_fixed(data, data_len, tag, len, &value); |
| 42 | OSMO_ASSERT(rc == (int)len + 1); |
| 43 | OSMO_ASSERT(memcmp(value, exp_val, len) == 0); |
| 44 | } |
| 45 | |
| 46 | static void check_v_fixed_shift(uint8_t **data, size_t *data_len, |
| 47 | size_t len, const uint8_t *exp_val) |
| 48 | { |
| 49 | uint8_t *value; |
| 50 | int rc; |
| 51 | |
| 52 | rc = osmo_shift_v_fixed(data, data_len, len, &value); |
| 53 | OSMO_ASSERT(rc == (int)len); |
| 54 | OSMO_ASSERT(memcmp(value, exp_val, len) == 0); |
| 55 | } |
| 56 | |
| 57 | static void check_lv_shift(uint8_t **data, size_t *data_len, |
| 58 | size_t exp_len, const uint8_t *exp_val) |
| 59 | { |
| 60 | uint8_t *value; |
| 61 | size_t value_len; |
| 62 | int rc; |
| 63 | |
| 64 | rc = osmo_shift_lv(data, data_len, &value, &value_len); |
| 65 | OSMO_ASSERT(rc == (int)value_len + 1); |
| 66 | OSMO_ASSERT(value_len == exp_len); |
| 67 | OSMO_ASSERT(memcmp(value, exp_val, exp_len) == 0); |
| 68 | } |
| 69 | |
| 70 | static void check_tlv_match_data_len(size_t data_len, uint8_t tag, size_t len, |
| 71 | const uint8_t *test_data) |
| 72 | { |
| 73 | uint8_t buf[300] = {0}; |
| 74 | |
| 75 | uint8_t *unchanged_ptr = buf - 1; |
| 76 | size_t unchanged_len = 0xdead; |
| 77 | size_t tmp_data_len = data_len; |
| 78 | uint8_t *value = unchanged_ptr; |
| 79 | size_t value_len = unchanged_len; |
| 80 | uint8_t *data = buf; |
| 81 | |
| 82 | OSMO_ASSERT(data_len <= sizeof(buf)); |
| 83 | |
| 84 | tlv_put(data, tag, len, test_data); |
| 85 | if (data_len < len + 2) { |
| 86 | OSMO_ASSERT(-1 == osmo_match_shift_tlv(&data, &tmp_data_len, |
| 87 | tag, &value, &value_len)); |
| 88 | OSMO_ASSERT(tmp_data_len == 0); |
| 89 | OSMO_ASSERT(data == buf + data_len); |
| 90 | OSMO_ASSERT(value == unchanged_ptr); |
| 91 | OSMO_ASSERT(value_len == unchanged_len); |
| 92 | } else { |
| 93 | OSMO_ASSERT(0 <= osmo_match_shift_tlv(&data, &tmp_data_len, |
| 94 | tag, &value, &value_len)); |
| 95 | OSMO_ASSERT(value != unchanged_ptr); |
| 96 | OSMO_ASSERT(value_len != unchanged_len); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | static void check_tv_fixed_match_data_len(size_t data_len, |
| 101 | uint8_t tag, size_t len, |
| 102 | const uint8_t *test_data) |
| 103 | { |
| 104 | uint8_t buf[300] = {0}; |
| 105 | |
| 106 | uint8_t *unchanged_ptr = buf - 1; |
| 107 | size_t tmp_data_len = data_len; |
| 108 | uint8_t *value = unchanged_ptr; |
| 109 | uint8_t *data = buf; |
| 110 | |
| 111 | OSMO_ASSERT(data_len <= sizeof(buf)); |
| 112 | |
| 113 | tv_fixed_put(data, tag, len, test_data); |
| 114 | |
| 115 | if (data_len < len + 1) { |
| 116 | OSMO_ASSERT(-1 == osmo_match_shift_tv_fixed(&data, &tmp_data_len, |
| 117 | tag, len, &value)); |
| 118 | OSMO_ASSERT(tmp_data_len == 0); |
| 119 | OSMO_ASSERT(data == buf + data_len); |
| 120 | OSMO_ASSERT(value == unchanged_ptr); |
| 121 | } else { |
| 122 | OSMO_ASSERT(0 <= osmo_match_shift_tv_fixed(&data, &tmp_data_len, |
| 123 | tag, len, &value)); |
| 124 | OSMO_ASSERT(value != unchanged_ptr); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | static void check_v_fixed_shift_data_len(size_t data_len, |
| 129 | size_t len, const uint8_t *test_data) |
| 130 | { |
| 131 | uint8_t buf[300] = {0}; |
| 132 | |
| 133 | uint8_t *unchanged_ptr = buf - 1; |
| 134 | size_t tmp_data_len = data_len; |
| 135 | uint8_t *value = unchanged_ptr; |
| 136 | uint8_t *data = buf; |
| 137 | |
| 138 | OSMO_ASSERT(data_len <= sizeof(buf)); |
| 139 | |
| 140 | memcpy(data, test_data, len); |
| 141 | |
| 142 | if (data_len < len) { |
| 143 | OSMO_ASSERT(-1 == osmo_shift_v_fixed(&data, &tmp_data_len, |
| 144 | len, &value)); |
| 145 | OSMO_ASSERT(tmp_data_len == 0); |
| 146 | OSMO_ASSERT(data == buf + data_len); |
| 147 | OSMO_ASSERT(value == unchanged_ptr); |
| 148 | } else { |
| 149 | OSMO_ASSERT(0 <= osmo_shift_v_fixed(&data, &tmp_data_len, |
| 150 | len, &value)); |
| 151 | OSMO_ASSERT(value != unchanged_ptr); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | static void check_lv_shift_data_len(size_t data_len, |
| 156 | size_t len, const uint8_t *test_data) |
| 157 | { |
| 158 | uint8_t buf[300] = {0}; |
| 159 | |
| 160 | uint8_t *unchanged_ptr = buf - 1; |
| 161 | size_t unchanged_len = 0xdead; |
| 162 | size_t tmp_data_len = data_len; |
| 163 | uint8_t *value = unchanged_ptr; |
| 164 | size_t value_len = unchanged_len; |
| 165 | uint8_t *data = buf; |
| 166 | |
| 167 | lv_put(data, len, test_data); |
| 168 | if (data_len < len + 1) { |
| 169 | OSMO_ASSERT(-1 == osmo_shift_lv(&data, &tmp_data_len, |
| 170 | &value, &value_len)); |
| 171 | OSMO_ASSERT(tmp_data_len == 0); |
| 172 | OSMO_ASSERT(data == buf + data_len); |
| 173 | OSMO_ASSERT(value == unchanged_ptr); |
| 174 | OSMO_ASSERT(value_len == unchanged_len); |
| 175 | } else { |
| 176 | OSMO_ASSERT(0 <= osmo_shift_lv(&data, &tmp_data_len, |
| 177 | &value, &value_len)); |
| 178 | OSMO_ASSERT(value != unchanged_ptr); |
| 179 | OSMO_ASSERT(value_len != unchanged_len); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static void test_tlv_shift_functions() |
| 184 | { |
| 185 | uint8_t test_data[1024]; |
| 186 | uint8_t buf[1024]; |
| 187 | uint8_t *data_end; |
| 188 | unsigned i, len; |
| 189 | uint8_t *data; |
| 190 | size_t data_len; |
| 191 | const uint8_t tag = 0x1a; |
| 192 | |
| 193 | printf("Test shift functions\n"); |
| 194 | |
| 195 | for (i = 0; i < ARRAY_SIZE(test_data); i++) |
| 196 | test_data[i] = (uint8_t)i; |
| 197 | |
| 198 | for (len = 0; len < 256; len++) { |
| 199 | const unsigned iterations = sizeof(buf) / (len + 2) / 4; |
| 200 | |
| 201 | memset(buf, 0xee, sizeof(buf)); |
| 202 | data_end = data = buf; |
| 203 | |
| 204 | for (i = 0; i < iterations; i++) { |
| 205 | data_end = tlv_put(data_end, tag, len, test_data); |
| 206 | data_end = tv_fixed_put(data_end, tag, len, test_data); |
| 207 | /* v_fixed_put */ |
| 208 | memcpy(data_end, test_data, len); |
| 209 | data_end += len; |
| 210 | data_end = lv_put(data_end, len, test_data); |
| 211 | } |
| 212 | |
| 213 | data_len = data_end - data; |
| 214 | OSMO_ASSERT(data_len <= sizeof(buf)); |
| 215 | |
| 216 | for (i = 0; i < iterations; i++) { |
| 217 | check_tlv_parse(&data, &data_len, tag, len, test_data); |
| 218 | check_tv_fixed_match(&data, &data_len, tag, len, test_data); |
| 219 | check_v_fixed_shift(&data, &data_len, len, test_data); |
| 220 | check_lv_shift(&data, &data_len, len, test_data); |
| 221 | } |
| 222 | |
| 223 | OSMO_ASSERT(data == data_end); |
| 224 | |
| 225 | /* Test at end of data */ |
| 226 | |
| 227 | OSMO_ASSERT(-1 == osmo_match_shift_tlv(&data, &data_len, tag, NULL, NULL)); |
| 228 | OSMO_ASSERT(-1 == osmo_match_shift_tv_fixed(&data, &data_len, tag, len, NULL)); |
| 229 | OSMO_ASSERT((len ? -1 : 0) == osmo_shift_v_fixed(&data, &data_len, len, NULL)); |
| 230 | OSMO_ASSERT(-1 == osmo_shift_lv(&data, &data_len, NULL, NULL)); |
| 231 | |
| 232 | /* Test invalid data_len */ |
| 233 | for (data_len = 0; data_len <= len + 2 + 1; data_len += 1) { |
| 234 | check_tlv_match_data_len(data_len, tag, len, test_data); |
| 235 | check_tv_fixed_match_data_len(data_len, tag, len, test_data); |
| 236 | check_v_fixed_shift_data_len(data_len, len, test_data); |
| 237 | check_lv_shift_data_len(data_len, len, test_data); |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | int main(int argc, char **argv) |
| 243 | { |
| 244 | //osmo_init_logging(&info); |
| 245 | |
| 246 | test_tlv_shift_functions(); |
| 247 | |
| 248 | printf("Done.\n"); |
| 249 | return EXIT_SUCCESS; |
| 250 | } |