| 1 | /* |
| 2 | * QEMU CBOR helpers |
| 3 | * |
| 4 | * Copyright (c) 2024 Dorjoy Chowdhury <dorjoychy111@gmail.com> |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * (at your option) any later version. See the COPYING file in the |
| 8 | * top-level directory. |
| 9 | */ |
| 10 | |
| 11 | #include "qemu/osdep.h" |
| 12 | #include "hw/virtio/cbor-helpers.h" |
| 13 | |
| 14 | bool qemu_cbor_map_add(cbor_item_t *map, cbor_item_t *key, cbor_item_t *value) |
| 15 | { |
| 16 | bool success = false; |
| 17 | struct cbor_pair pair = (struct cbor_pair) { |
| 18 | .key = cbor_move(key), |
| 19 | .value = cbor_move(value) |
| 20 | }; |
| 21 | |
| 22 | success = cbor_map_add(map, pair); |
| 23 | if (!success) { |
| 24 | cbor_incref(pair.key); |
| 25 | cbor_incref(pair.value); |
| 26 | } |
| 27 | |
| 28 | return success; |
| 29 | } |
| 30 | |
| 31 | bool qemu_cbor_array_push(cbor_item_t *array, cbor_item_t *value) |
| 32 | { |
| 33 | bool success = false; |
| 34 | |
| 35 | success = cbor_array_push(array, cbor_move(value)); |
| 36 | if (!success) { |
| 37 | cbor_incref(value); |
| 38 | } |
| 39 | |
| 40 | return success; |
| 41 | } |
| 42 | |
| 43 | bool qemu_cbor_add_bool_to_map(cbor_item_t *map, const char *key, bool value) |
| 44 | { |
| 45 | cbor_item_t *key_cbor = NULL; |
| 46 | cbor_item_t *value_cbor = NULL; |
| 47 | |
| 48 | key_cbor = cbor_build_string(key); |
| 49 | if (!key_cbor) { |
| 50 | goto cleanup; |
| 51 | } |
| 52 | value_cbor = cbor_build_bool(value); |
| 53 | if (!value_cbor) { |
| 54 | goto cleanup; |
| 55 | } |
| 56 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 57 | goto cleanup; |
| 58 | } |
| 59 | |
| 60 | return true; |
| 61 | |
| 62 | cleanup: |
| 63 | if (key_cbor) { |
| 64 | cbor_decref(&key_cbor); |
| 65 | } |
| 66 | if (value_cbor) { |
| 67 | cbor_decref(&value_cbor); |
| 68 | } |
| 69 | return false; |
| 70 | } |
| 71 | |
| 72 | bool qemu_cbor_add_uint8_to_map(cbor_item_t *map, const char *key, |
| 73 | uint8_t value) |
| 74 | { |
| 75 | cbor_item_t *key_cbor = NULL; |
| 76 | cbor_item_t *value_cbor = NULL; |
| 77 | |
| 78 | key_cbor = cbor_build_string(key); |
| 79 | if (!key_cbor) { |
| 80 | goto cleanup; |
| 81 | } |
| 82 | value_cbor = cbor_build_uint8(value); |
| 83 | if (!value_cbor) { |
| 84 | goto cleanup; |
| 85 | } |
| 86 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 87 | goto cleanup; |
| 88 | } |
| 89 | |
| 90 | return true; |
| 91 | |
| 92 | cleanup: |
| 93 | if (key_cbor) { |
| 94 | cbor_decref(&key_cbor); |
| 95 | } |
| 96 | if (value_cbor) { |
| 97 | cbor_decref(&value_cbor); |
| 98 | } |
| 99 | return false; |
| 100 | } |
| 101 | |
| 102 | bool qemu_cbor_add_map_to_map(cbor_item_t *map, const char *key, |
| 103 | size_t nested_map_size, |
| 104 | cbor_item_t **nested_map) |
| 105 | { |
| 106 | cbor_item_t *key_cbor = NULL; |
| 107 | cbor_item_t *value_cbor = NULL; |
| 108 | |
| 109 | key_cbor = cbor_build_string(key); |
| 110 | if (!key_cbor) { |
| 111 | goto cleanup; |
| 112 | } |
| 113 | value_cbor = cbor_new_definite_map(nested_map_size); |
| 114 | if (!value_cbor) { |
| 115 | goto cleanup; |
| 116 | } |
| 117 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 118 | goto cleanup; |
| 119 | } |
| 120 | *nested_map = value_cbor; |
| 121 | |
| 122 | return true; |
| 123 | |
| 124 | cleanup: |
| 125 | if (key_cbor) { |
| 126 | cbor_decref(&key_cbor); |
| 127 | } |
| 128 | if (value_cbor) { |
| 129 | cbor_decref(&value_cbor); |
| 130 | } |
| 131 | return false; |
| 132 | } |
| 133 | |
| 134 | bool qemu_cbor_add_bytestring_to_map(cbor_item_t *map, const char *key, |
| 135 | uint8_t *arr, size_t len) |
| 136 | { |
| 137 | cbor_item_t *key_cbor = NULL; |
| 138 | cbor_item_t *value_cbor = NULL; |
| 139 | |
| 140 | key_cbor = cbor_build_string(key); |
| 141 | if (!key_cbor) { |
| 142 | goto cleanup; |
| 143 | } |
| 144 | value_cbor = cbor_build_bytestring(arr, len); |
| 145 | if (!value_cbor) { |
| 146 | goto cleanup; |
| 147 | } |
| 148 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 149 | goto cleanup; |
| 150 | } |
| 151 | |
| 152 | return true; |
| 153 | |
| 154 | cleanup: |
| 155 | if (key_cbor) { |
| 156 | cbor_decref(&key_cbor); |
| 157 | } |
| 158 | if (value_cbor) { |
| 159 | cbor_decref(&value_cbor); |
| 160 | } |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | bool qemu_cbor_add_null_to_map(cbor_item_t *map, const char *key) |
| 165 | { |
| 166 | cbor_item_t *key_cbor = NULL; |
| 167 | cbor_item_t *value_cbor = NULL; |
| 168 | |
| 169 | key_cbor = cbor_build_string(key); |
| 170 | if (!key_cbor) { |
| 171 | goto cleanup; |
| 172 | } |
| 173 | value_cbor = cbor_new_null(); |
| 174 | if (!value_cbor) { |
| 175 | goto cleanup; |
| 176 | } |
| 177 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 178 | goto cleanup; |
| 179 | } |
| 180 | |
| 181 | return true; |
| 182 | |
| 183 | cleanup: |
| 184 | if (key_cbor) { |
| 185 | cbor_decref(&key_cbor); |
| 186 | } |
| 187 | if (value_cbor) { |
| 188 | cbor_decref(&value_cbor); |
| 189 | } |
| 190 | return false; |
| 191 | } |
| 192 | |
| 193 | bool qemu_cbor_add_string_to_map(cbor_item_t *map, const char *key, |
| 194 | const char *value) |
| 195 | { |
| 196 | cbor_item_t *key_cbor = NULL; |
| 197 | cbor_item_t *value_cbor = NULL; |
| 198 | |
| 199 | key_cbor = cbor_build_string(key); |
| 200 | if (!key_cbor) { |
| 201 | goto cleanup; |
| 202 | } |
| 203 | value_cbor = cbor_build_string(value); |
| 204 | if (!value_cbor) { |
| 205 | goto cleanup; |
| 206 | } |
| 207 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 208 | goto cleanup; |
| 209 | } |
| 210 | |
| 211 | return true; |
| 212 | |
| 213 | cleanup: |
| 214 | if (key_cbor) { |
| 215 | cbor_decref(&key_cbor); |
| 216 | } |
| 217 | if (value_cbor) { |
| 218 | cbor_decref(&value_cbor); |
| 219 | } |
| 220 | return false; |
| 221 | } |
| 222 | |
| 223 | bool qemu_cbor_add_uint8_array_to_map(cbor_item_t *map, const char *key, |
| 224 | uint8_t *arr, size_t len) |
| 225 | { |
| 226 | cbor_item_t *key_cbor = NULL; |
| 227 | cbor_item_t *value_cbor = NULL; |
| 228 | |
| 229 | key_cbor = cbor_build_string(key); |
| 230 | if (!key_cbor) { |
| 231 | goto cleanup; |
| 232 | } |
| 233 | value_cbor = cbor_new_definite_array(len); |
| 234 | if (!value_cbor) { |
| 235 | goto cleanup; |
| 236 | } |
| 237 | |
| 238 | for (int i = 0; i < len; ++i) { |
| 239 | cbor_item_t *tmp = cbor_build_uint8(arr[i]); |
| 240 | if (!tmp) { |
| 241 | goto cleanup; |
| 242 | } |
| 243 | if (!qemu_cbor_array_push(value_cbor, tmp)) { |
| 244 | cbor_decref(&tmp); |
| 245 | goto cleanup; |
| 246 | } |
| 247 | } |
| 248 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 249 | goto cleanup; |
| 250 | } |
| 251 | |
| 252 | return true; |
| 253 | |
| 254 | cleanup: |
| 255 | if (key_cbor) { |
| 256 | cbor_decref(&key_cbor); |
| 257 | } |
| 258 | if (value_cbor) { |
| 259 | cbor_decref(&value_cbor); |
| 260 | } |
| 261 | return false; |
| 262 | } |
| 263 | |
| 264 | bool qemu_cbor_add_uint8_key_bytestring_to_map(cbor_item_t *map, uint8_t key, |
| 265 | uint8_t *buf, size_t len) |
| 266 | { |
| 267 | cbor_item_t *key_cbor = NULL; |
| 268 | cbor_item_t *value_cbor = NULL; |
| 269 | |
| 270 | key_cbor = cbor_build_uint8(key); |
| 271 | if (!key_cbor) { |
| 272 | goto cleanup; |
| 273 | } |
| 274 | value_cbor = cbor_build_bytestring(buf, len); |
| 275 | if (!value_cbor) { |
| 276 | goto cleanup; |
| 277 | } |
| 278 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 279 | goto cleanup; |
| 280 | } |
| 281 | |
| 282 | return true; |
| 283 | |
| 284 | cleanup: |
| 285 | if (key_cbor) { |
| 286 | cbor_decref(&key_cbor); |
| 287 | } |
| 288 | if (value_cbor) { |
| 289 | cbor_decref(&value_cbor); |
| 290 | } |
| 291 | return false; |
| 292 | } |
| 293 | |
| 294 | bool qemu_cbor_add_uint64_to_map(cbor_item_t *map, const char *key, |
| 295 | uint64_t value) |
| 296 | { |
| 297 | cbor_item_t *key_cbor = NULL; |
| 298 | cbor_item_t *value_cbor = NULL; |
| 299 | |
| 300 | key_cbor = cbor_build_string(key); |
| 301 | if (!key_cbor) { |
| 302 | goto cleanup; |
| 303 | } |
| 304 | value_cbor = cbor_build_uint64(value); |
| 305 | if (!value_cbor) { |
| 306 | goto cleanup; |
| 307 | } |
| 308 | if (!qemu_cbor_map_add(map, key_cbor, value_cbor)) { |
| 309 | goto cleanup; |
| 310 | } |
| 311 | |
| 312 | return true; |
| 313 | |
| 314 | cleanup: |
| 315 | if (key_cbor) { |
| 316 | cbor_decref(&key_cbor); |
| 317 | } |
| 318 | if (value_cbor) { |
| 319 | cbor_decref(&value_cbor); |
| 320 | } |
| 321 | return false; |
| 322 | } |