| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #ifndef NETDATA_JSON_C_PARSER_INLINE_H |
| 4 | #define NETDATA_JSON_C_PARSER_INLINE_H |
| 5 | |
| 6 | // Flags for JSONC_PARSE_* macros (bitmask) |
| 7 | // JSONC_OPTIONAL - key may be absent; wrong type is silently ignored |
| 8 | // JSONC_REQUIRED - key must exist; wrong type is an error |
| 9 | // JSONC_STRICT - key may be absent, but if present the type must be correct |
| 10 | #define JSONC_OPTIONAL 0 |
| 11 | #define JSONC_REQUIRED (1 << 0) |
| 12 | #define JSONC_STRICT (1 << 1) |
| 13 | |
| 14 | // helper: convert a bool to JSONC_REQUIRED / JSONC_OPTIONAL |
| 15 | #define JSONC_REQUIRE_IF(cond) ((cond) ? JSONC_REQUIRED : JSONC_OPTIONAL) |
| 16 | |
| 17 | #define JSONC_PARSE_BOOL_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 18 | json_object *_j; \ |
| 19 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 20 | if (json_object_is_type(_j, json_type_boolean)) { \ |
| 21 | dst = json_object_get_boolean(_j); \ |
| 22 | } \ |
| 23 | else if (json_object_is_type(_j, json_type_string)) { \ |
| 24 | const char *_str = json_object_get_string(_j); \ |
| 25 | if (strcasecmp(_str, "true") == 0 || strcasecmp(_str, "yes") == 0 || strcasecmp(_str, "on") == 0) { \ |
| 26 | dst = true; \ |
| 27 | } \ |
| 28 | else if (strcasecmp(_str, "false") == 0 || strcasecmp(_str, "no") == 0 || strcasecmp(_str, "off") == 0) { \ |
| 29 | dst = false; \ |
| 30 | } \ |
| 31 | else { \ |
| 32 | buffer_sprintf(error, "invalid boolean string '%s' for '%s.%s'", _str, path, member); \ |
| 33 | return false; \ |
| 34 | } \ |
| 35 | } \ |
| 36 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 37 | dst = json_object_get_int64(_j) != 0; \ |
| 38 | } \ |
| 39 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 40 | dst = json_object_get_double(_j) != 0.0; \ |
| 41 | } \ |
| 42 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 43 | dst = false; \ |
| 44 | } \ |
| 45 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 46 | buffer_sprintf(error, "cannot convert to boolean for '%s.%s'", path, member); \ |
| 47 | return false; \ |
| 48 | } \ |
| 49 | } \ |
| 50 | else if((flags) & JSONC_REQUIRED) { \ |
| 51 | buffer_sprintf(error, "missing '%s.%s' boolean", path, member); \ |
| 52 | return false; \ |
| 53 | } \ |
| 54 | } while(0) |
| 55 | |
| 56 | #define JSONC_PARSE_TXT2STRING_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 57 | json_object *_j; \ |
| 58 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 59 | if (json_object_is_type(_j, json_type_string)) { \ |
| 60 | string_freez(dst); \ |
| 61 | dst = string_strdupz(json_object_get_string(_j)); \ |
| 62 | } \ |
| 63 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 64 | char _buf[UINT64_MAX_LENGTH]; \ |
| 65 | print_int64(_buf, json_object_get_int64(_j)); \ |
| 66 | string_freez(dst); \ |
| 67 | dst = string_strdupz(_buf); \ |
| 68 | } \ |
| 69 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 70 | char _buf[DOUBLE_MAX_LENGTH]; \ |
| 71 | print_netdata_double(_buf, json_object_get_double(_j)); \ |
| 72 | string_freez(dst); \ |
| 73 | dst = string_strdupz(_buf); \ |
| 74 | } \ |
| 75 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 76 | string_freez(dst); \ |
| 77 | dst = string_strdupz(json_object_get_boolean(_j) ? "true" : "false"); \ |
| 78 | } \ |
| 79 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 80 | string_freez(dst); \ |
| 81 | dst = NULL; \ |
| 82 | } \ |
| 83 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 84 | buffer_sprintf(error, "cannot convert to string for '%s.%s'", path, member); \ |
| 85 | return false; \ |
| 86 | } \ |
| 87 | } \ |
| 88 | else if((flags) & JSONC_REQUIRED) { \ |
| 89 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 90 | return false; \ |
| 91 | } \ |
| 92 | } while(0) |
| 93 | |
| 94 | #define JSONC_PARSE_TXT2CHAR_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 95 | json_object *_j; \ |
| 96 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 97 | if (json_object_is_type(_j, json_type_string)) { \ |
| 98 | strncpyz(dst, json_object_get_string(_j), sizeof(dst) - 1); \ |
| 99 | } \ |
| 100 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 101 | char _buf[UINT64_MAX_LENGTH]; \ |
| 102 | print_int64(_buf, json_object_get_int64(_j)); \ |
| 103 | strncpyz(dst, _buf, sizeof(dst) - 1); \ |
| 104 | } \ |
| 105 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 106 | char _buf[DOUBLE_MAX_LENGTH]; \ |
| 107 | print_netdata_double(_buf, json_object_get_double(_j)); \ |
| 108 | strncpyz(dst, _buf, sizeof(dst) - 1); \ |
| 109 | } \ |
| 110 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 111 | strncpyz(dst, json_object_get_boolean(_j) ? "true" : "false", sizeof(dst) - 1); \ |
| 112 | } \ |
| 113 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 114 | dst[0] = '\0'; \ |
| 115 | } \ |
| 116 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 117 | buffer_sprintf(error, "cannot convert to string for '%s.%s'", path, member); \ |
| 118 | return false; \ |
| 119 | } \ |
| 120 | else \ |
| 121 | dst[0] = '\0'; \ |
| 122 | } \ |
| 123 | else { \ |
| 124 | dst[0] = '\0'; \ |
| 125 | if ((flags) & JSONC_REQUIRED) { \ |
| 126 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 127 | return false; \ |
| 128 | } \ |
| 129 | } \ |
| 130 | } while(0) |
| 131 | |
| 132 | #define JSONC_PARSE_TXT2RFC3339_USEC_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 133 | json_object *_j; \ |
| 134 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 135 | if (json_object_is_type(_j, json_type_string)) { \ |
| 136 | char _datetime[RFC3339_MAX_LENGTH]; _datetime[0] = '\0'; \ |
| 137 | strncpyz(_datetime, json_object_get_string(_j), sizeof(_datetime) - 1); \ |
| 138 | dst = rfc3339_parse_ut(_datetime, NULL); \ |
| 139 | } \ |
| 140 | else { \ |
| 141 | dst = 0; \ |
| 142 | if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 143 | buffer_sprintf(error, "invalid type for '%s.%s' string", path, member); \ |
| 144 | return false; \ |
| 145 | } \ |
| 146 | } \ |
| 147 | } \ |
| 148 | else { \ |
| 149 | dst = 0; \ |
| 150 | if ((flags) & JSONC_REQUIRED) { \ |
| 151 | buffer_sprintf(error, "missing '%s.%s' string", path, member); \ |
| 152 | return false; \ |
| 153 | } \ |
| 154 | } \ |
| 155 | } while(0) |
| 156 | |
| 157 | #define JSONC_PARSE_TXT2STRDUPZ_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 158 | json_object *_j; \ |
| 159 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 160 | if (json_object_is_type(_j, json_type_string)) { \ |
| 161 | freez((void *)dst); \ |
| 162 | dst = strdupz(json_object_get_string(_j)); \ |
| 163 | } \ |
| 164 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 165 | char _buf[UINT64_MAX_LENGTH]; \ |
| 166 | print_int64(_buf, json_object_get_int64(_j)); \ |
| 167 | freez((void *)dst); \ |
| 168 | dst = strdupz(_buf); \ |
| 169 | } \ |
| 170 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 171 | char _buf[DOUBLE_MAX_LENGTH]; \ |
| 172 | print_netdata_double(_buf, json_object_get_double(_j)); \ |
| 173 | freez((void *)dst); \ |
| 174 | dst = strdupz(_buf); \ |
| 175 | } \ |
| 176 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 177 | freez((void *)dst); \ |
| 178 | dst = strdupz(json_object_get_boolean(_j) ? "true" : "false"); \ |
| 179 | } \ |
| 180 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 181 | freez((void *)dst); \ |
| 182 | dst = NULL; \ |
| 183 | } \ |
| 184 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 185 | buffer_sprintf(error, "cannot convert to string for '%s.%s'", path, member); \ |
| 186 | return false; \ |
| 187 | } \ |
| 188 | } \ |
| 189 | else if((flags) & JSONC_REQUIRED) { \ |
| 190 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 191 | return false; \ |
| 192 | } \ |
| 193 | } while(0) |
| 194 | |
| 195 | #define JSONC_PARSE_SCALAR2STRDUPZ_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 196 | json_object *_j; \ |
| 197 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 198 | if (json_object_is_type(_j, json_type_string)) { \ |
| 199 | freez((void *)dst); \ |
| 200 | dst = strdupz(json_object_get_string(_j)); \ |
| 201 | } \ |
| 202 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 203 | char _buf[UINT64_MAX_LENGTH]; \ |
| 204 | print_int64(_buf, json_object_get_int64(_j)); \ |
| 205 | freez((void *)dst); \ |
| 206 | dst = strdupz(_buf); \ |
| 207 | } \ |
| 208 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 209 | char _buf[DOUBLE_MAX_LENGTH]; \ |
| 210 | print_netdata_double(_buf, json_object_get_double(_j)); \ |
| 211 | freez((void *)dst); \ |
| 212 | dst = strdupz(_buf); \ |
| 213 | } \ |
| 214 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 215 | freez((void *)dst); \ |
| 216 | dst = strdupz(json_object_get_boolean(_j) ? "true" : "false"); \ |
| 217 | } \ |
| 218 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 219 | freez((void *)dst); \ |
| 220 | dst = NULL; \ |
| 221 | } \ |
| 222 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 223 | buffer_sprintf(error, "non-scalar type for '%s.%s' (arrays and objects not supported)", path, member); \ |
| 224 | return false; \ |
| 225 | } \ |
| 226 | } \ |
| 227 | else if((flags) & JSONC_REQUIRED) { \ |
| 228 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 229 | return false; \ |
| 230 | } \ |
| 231 | } while(0) |
| 232 | |
| 233 | #define JSONC_PARSE_TXT2UUID_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 234 | json_object *_j; \ |
| 235 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 236 | if (json_object_is_type(_j, json_type_string)) { \ |
| 237 | if (uuid_parse(json_object_get_string(_j), dst) != 0) { \ |
| 238 | if((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 239 | buffer_sprintf(error, "invalid UUID '%s.%s'", path, member); \ |
| 240 | return false; \ |
| 241 | } \ |
| 242 | else \ |
| 243 | uuid_clear(dst); \ |
| 244 | } \ |
| 245 | } \ |
| 246 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 247 | uuid_clear(dst); \ |
| 248 | } \ |
| 249 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 250 | buffer_sprintf(error, "invalid type for UUID '%s.%s'", path, member); \ |
| 251 | return false; \ |
| 252 | } \ |
| 253 | } \ |
| 254 | else if ((flags) & JSONC_REQUIRED) { \ |
| 255 | buffer_sprintf(error, "missing UUID '%s.%s'", path, member); \ |
| 256 | return false; \ |
| 257 | } \ |
| 258 | } while(0) |
| 259 | |
| 260 | #define JSONC_PARSE_TXT2BUFFER_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 261 | json_object *_j; \ |
| 262 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 263 | const char *_s = NULL; \ |
| 264 | char _buf[DOUBLE_MAX_LENGTH]; \ |
| 265 | bool _type_ok = true; \ |
| 266 | if (json_object_is_type(_j, json_type_string)) { \ |
| 267 | _s = json_object_get_string(_j); \ |
| 268 | } \ |
| 269 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 270 | print_int64(_buf, json_object_get_int64(_j)); \ |
| 271 | _s = _buf; \ |
| 272 | } \ |
| 273 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 274 | print_netdata_double(_buf, json_object_get_double(_j)); \ |
| 275 | _s = _buf; \ |
| 276 | } \ |
| 277 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 278 | _s = json_object_get_boolean(_j) ? "true" : "false"; \ |
| 279 | } \ |
| 280 | else if (json_object_is_type(_j, json_type_null)) { \ |
| 281 | _s = NULL; \ |
| 282 | } \ |
| 283 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 284 | buffer_sprintf(error, "cannot convert to string for '%s.%s'", path, member); \ |
| 285 | return false; \ |
| 286 | } \ |
| 287 | else _type_ok = false; \ |
| 288 | if(_type_ok) { \ |
| 289 | if(!_s || !*_s) { \ |
| 290 | buffer_free(dst); \ |
| 291 | dst = NULL; \ |
| 292 | } \ |
| 293 | else { \ |
| 294 | if (dst) \ |
| 295 | buffer_flush(dst); \ |
| 296 | else \ |
| 297 | dst = buffer_create(0, NULL); \ |
| 298 | buffer_strcat(dst, _s); \ |
| 299 | } \ |
| 300 | } \ |
| 301 | } \ |
| 302 | else if((flags) & JSONC_REQUIRED) { \ |
| 303 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 304 | return false; \ |
| 305 | } \ |
| 306 | } while(0) |
| 307 | |
| 308 | #define JSONC_PARSE_TXT2PATTERN_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 309 | json_object *_j; \ |
| 310 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 311 | if (json_object_is_type(_j, json_type_string)) { \ |
| 312 | string_freez(dst); \ |
| 313 | const char *_v = json_object_get_string(_j); \ |
| 314 | if(strcmp(_v, "*") == 0) \ |
| 315 | dst = NULL; \ |
| 316 | else \ |
| 317 | dst = string_strdupz(_v); \ |
| 318 | } \ |
| 319 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 320 | buffer_sprintf(error, "invalid type for '%s.%s' string", path, member); \ |
| 321 | return false; \ |
| 322 | } \ |
| 323 | } \ |
| 324 | else if((flags) & JSONC_REQUIRED) { \ |
| 325 | buffer_sprintf(error, "missing '%s.%s' string", path, member); \ |
| 326 | return false; \ |
| 327 | } \ |
| 328 | } while(0) |
| 329 | |
| 330 | #define JSONC_PARSE_TXT2EXPRESSION_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 331 | json_object *_j; \ |
| 332 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 333 | if (json_object_is_type(_j, json_type_string)) { \ |
| 334 | const char *_t = json_object_get_string(_j); \ |
| 335 | if(_t && *_t && strcmp(_t, "*") != 0) { \ |
| 336 | const char *_failed_at = NULL; \ |
| 337 | int _err = 0; \ |
| 338 | expression_free(dst); \ |
| 339 | dst = expression_parse(_t, &_failed_at, &_err); \ |
| 340 | if(!dst) { \ |
| 341 | buffer_sprintf(error, "expression '%s.%s' has a non-parseable expression '%s': %s at '%s'", \ |
| 342 | path, member, _t, expression_strerror(_err), _failed_at); \ |
| 343 | return false; \ |
| 344 | } \ |
| 345 | } \ |
| 346 | } \ |
| 347 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 348 | buffer_sprintf(error, "invalid type for '%s.%s' expression", path, member); \ |
| 349 | return false; \ |
| 350 | } \ |
| 351 | } \ |
| 352 | else if((flags) & JSONC_REQUIRED) { \ |
| 353 | buffer_sprintf(error, "missing '%s.%s' expression", path, member); \ |
| 354 | return false; \ |
| 355 | } \ |
| 356 | } while(0) |
| 357 | |
| 358 | #define JSONC_PARSE_ARRAY_OF_TXT2BITMAP_OR_ERROR_AND_RETURN(jobj, path, member, converter, dst, error, flags) do { \ |
| 359 | json_object *_jarray; \ |
| 360 | if (json_object_object_get_ex(jobj, member, &_jarray)) { \ |
| 361 | if (json_object_is_type(_jarray, json_type_array)) { \ |
| 362 | size_t _num_options = json_object_array_length(_jarray); \ |
| 363 | dst = 0; \ |
| 364 | for (size_t _i = 0; _i < _num_options; ++_i) { \ |
| 365 | json_object *_joption = json_object_array_get_idx(_jarray, _i); \ |
| 366 | if (!json_object_is_type(_joption, json_type_string)) { \ |
| 367 | buffer_sprintf(error, "invalid type for '%s.%s' at index %zu", path, member, _i); \ |
| 368 | return false; \ |
| 369 | } \ |
| 370 | const char *_option_str = json_object_get_string(_joption); \ |
| 371 | typeof(dst) _bit = converter(_option_str); \ |
| 372 | if (_bit == 0) { \ |
| 373 | buffer_sprintf(error, "unknown option '%s' in '%s.%s' at index %zu", _option_str, path, member, _i); \ |
| 374 | /* return false; */ \ |
| 375 | } \ |
| 376 | dst |= _bit; \ |
| 377 | } \ |
| 378 | } \ |
| 379 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 380 | buffer_sprintf(error, "invalid type for '%s.%s' array", path, member); \ |
| 381 | return false; \ |
| 382 | } \ |
| 383 | } \ |
| 384 | else if((flags) & JSONC_REQUIRED) { \ |
| 385 | buffer_sprintf(error, "missing '%s.%s' array", path, member); \ |
| 386 | return false; \ |
| 387 | } \ |
| 388 | } while(0) |
| 389 | |
| 390 | #define JSONC_PARSE_TXT2ENUM_OR_ERROR_AND_RETURN(jobj, path, member, converter, dst, error, flags) do { \ |
| 391 | json_object *_j; \ |
| 392 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 393 | if (json_object_is_type(_j, json_type_string)) \ |
| 394 | dst = converter(json_object_get_string(_j)); \ |
| 395 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 396 | buffer_sprintf(error, "invalid type for '%s.%s' enum", path, member); \ |
| 397 | return false; \ |
| 398 | } \ |
| 399 | } \ |
| 400 | else if((flags) & JSONC_REQUIRED) { \ |
| 401 | buffer_sprintf(error, "missing '%s.%s' enum", path, member); \ |
| 402 | return false; \ |
| 403 | } \ |
| 404 | } while(0) |
| 405 | |
| 406 | #define JSONC_PARSE_INT64_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 407 | json_object *_j; \ |
| 408 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 409 | if (_j == NULL) { \ |
| 410 | dst = 0; \ |
| 411 | } \ |
| 412 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 413 | dst = json_object_get_int64(_j); \ |
| 414 | } \ |
| 415 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 416 | dst = (typeof(dst))json_object_get_double(_j); \ |
| 417 | } \ |
| 418 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 419 | dst = json_object_get_boolean(_j) ? 1 : 0; \ |
| 420 | } \ |
| 421 | else if (json_object_is_type(_j, json_type_string)) { \ |
| 422 | const char *_str = json_object_get_string(_j); \ |
| 423 | char *_endptr; \ |
| 424 | errno_clear(); \ |
| 425 | long long _val = strtoll(_str, &_endptr, 10); \ |
| 426 | if (errno != 0 || *_endptr != '\0' || _endptr == _str) { \ |
| 427 | buffer_sprintf(error, "cannot convert string '%s' to int64 for '%s.%s'", _str, path, member); \ |
| 428 | return false; \ |
| 429 | } \ |
| 430 | dst = (typeof(dst))_val; \ |
| 431 | } \ |
| 432 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 433 | buffer_sprintf(error, "cannot convert to int64 for '%s.%s'", path, member); \ |
| 434 | return false; \ |
| 435 | } \ |
| 436 | } else if((flags) & JSONC_REQUIRED) { \ |
| 437 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 438 | return false; \ |
| 439 | } \ |
| 440 | } while(0) |
| 441 | |
| 442 | #define JSONC_PARSE_UINT64_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 443 | json_object *_j; \ |
| 444 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 445 | if (_j == NULL) { \ |
| 446 | dst = 0; \ |
| 447 | } \ |
| 448 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 449 | dst = json_object_get_uint64(_j); \ |
| 450 | } \ |
| 451 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 452 | dst = (typeof(dst))json_object_get_double(_j); \ |
| 453 | } \ |
| 454 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 455 | dst = json_object_get_boolean(_j) ? 1 : 0; \ |
| 456 | } \ |
| 457 | else if (json_object_is_type(_j, json_type_string)) { \ |
| 458 | const char *_str = json_object_get_string(_j); \ |
| 459 | char *_endptr; \ |
| 460 | errno_clear(); \ |
| 461 | if (_str[0] == '-') { \ |
| 462 | buffer_sprintf(error, "cannot convert negative string '%s' to uint64 for '%s.%s'", _str, path, member); \ |
| 463 | return false; \ |
| 464 | } \ |
| 465 | unsigned long long _val = strtoull(_str, &_endptr, 10); \ |
| 466 | if (errno != 0 || *_endptr != '\0' || _endptr == _str) { \ |
| 467 | buffer_sprintf(error, "cannot convert string '%s' to uint64 for '%s.%s'", _str, path, member); \ |
| 468 | return false; \ |
| 469 | } \ |
| 470 | dst = (typeof(dst))_val; \ |
| 471 | } \ |
| 472 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 473 | buffer_sprintf(error, "cannot convert to uint64 for '%s.%s'", path, member); \ |
| 474 | return false; \ |
| 475 | } \ |
| 476 | } else if((flags) & JSONC_REQUIRED) { \ |
| 477 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 478 | return false; \ |
| 479 | } \ |
| 480 | } while(0) |
| 481 | |
| 482 | #define JSONC_PARSE_DOUBLE_OR_ERROR_AND_RETURN(jobj, path, member, dst, error, flags) do { \ |
| 483 | json_object *_j; \ |
| 484 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 485 | if (_j == NULL) { \ |
| 486 | dst = NAN; \ |
| 487 | } \ |
| 488 | else if (json_object_is_type(_j, json_type_double)) { \ |
| 489 | dst = json_object_get_double(_j); \ |
| 490 | } \ |
| 491 | else if (json_object_is_type(_j, json_type_int)) { \ |
| 492 | dst = (typeof(dst))json_object_get_int64(_j); \ |
| 493 | } \ |
| 494 | else if (json_object_is_type(_j, json_type_boolean)) { \ |
| 495 | dst = json_object_get_boolean(_j) ? 1.0 : 0.0; \ |
| 496 | } \ |
| 497 | else if (json_object_is_type(_j, json_type_string)) { \ |
| 498 | const char *_str = json_object_get_string(_j); \ |
| 499 | char *_endptr; \ |
| 500 | errno_clear(); \ |
| 501 | double _val = strtod(_str, &_endptr); \ |
| 502 | if (errno != 0 || *_endptr != '\0' || _endptr == _str) { \ |
| 503 | buffer_sprintf(error, "cannot convert string '%s' to double for '%s.%s'", _str, path, member); \ |
| 504 | return false; \ |
| 505 | } \ |
| 506 | dst = (typeof(dst))_val; \ |
| 507 | } \ |
| 508 | else if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 509 | buffer_sprintf(error, "cannot convert to double for '%s.%s'", path, member); \ |
| 510 | return false; \ |
| 511 | } \ |
| 512 | } else if((flags) & JSONC_REQUIRED) { \ |
| 513 | buffer_sprintf(error, "missing '%s.%s'", path, member); \ |
| 514 | return false; \ |
| 515 | } \ |
| 516 | } while(0) |
| 517 | |
| 518 | #define JSONC_PARSE_SUBOBJECT_CB(jobj, path, member, dst, callback, error, flags) do { \ |
| 519 | json_object *_j; \ |
| 520 | if (json_object_object_get_ex(jobj, member, &_j)) { \ |
| 521 | if (!json_object_is_type(_j, json_type_object)) { \ |
| 522 | if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 523 | buffer_sprintf(error, "not an object '%s.%s'", path, member); \ |
| 524 | return false; \ |
| 525 | } \ |
| 526 | } \ |
| 527 | else { \ |
| 528 | size_t _new_path_size = strlen(path) + strlen(member) + 2; \ |
| 529 | char *_new_path = mallocz(_new_path_size); \ |
| 530 | snprintfz(_new_path, _new_path_size, "%s%s%s", path, *path?".":"", member); \ |
| 531 | if (!callback(_j, _new_path, dst, error, flags)) { \ |
| 532 | freez(_new_path); \ |
| 533 | return false; \ |
| 534 | } \ |
| 535 | freez(_new_path); \ |
| 536 | } \ |
| 537 | } else if((flags) & JSONC_REQUIRED) { \ |
| 538 | buffer_sprintf(error, "missing '%s.%s' object", path, member); \ |
| 539 | return false; \ |
| 540 | } \ |
| 541 | } while(0) |
| 542 | |
| 543 | #define JSONC_TEMP_VAR(type, line) JSONC_TEMP_VAR_IMPL(type, line) |
| 544 | #define JSONC_TEMP_VAR_IMPL(type, line) _jsonc_temp_##type##line |
| 545 | |
| 546 | #define JSONC_PATH_CONCAT(path, sizeof_path, prefix, member, error) do { \ |
| 547 | size_t len = strlen(prefix); \ |
| 548 | if(len >= sizeof_path - 1) { \ |
| 549 | buffer_sprintf(error, "path too long while adding '%s'", member); \ |
| 550 | return false; \ |
| 551 | } \ |
| 552 | if(len) { \ |
| 553 | if(len >= sizeof_path - 2) { \ |
| 554 | buffer_sprintf(error, "path too long while adding '.' before '%s'", member); \ |
| 555 | return false; \ |
| 556 | } \ |
| 557 | strncpyz(path + len, ".", sizeof_path - len); \ |
| 558 | len++; \ |
| 559 | } \ |
| 560 | strncpyz(path + len, member, sizeof_path - len); \ |
| 561 | } while(0) |
| 562 | |
| 563 | #define JSONC_PATH_CONCAT_INDEX(path, sizeof_path, index, error) do { \ |
| 564 | char _idx_str[32]; \ |
| 565 | snprintfz(_idx_str, sizeof(_idx_str), "[%zu]", index); \ |
| 566 | size_t _path_len = strlen(path); \ |
| 567 | if (_path_len + strlen(_idx_str) >= sizeof_path) { \ |
| 568 | buffer_sprintf(error, "path too long while adding array index"); \ |
| 569 | return false; \ |
| 570 | } \ |
| 571 | strncpyz(path + _path_len, _idx_str, sizeof_path - _path_len); \ |
| 572 | } while(0) |
| 573 | |
| 574 | #define JSONC_PARSE_SUBOBJECT(jobj, path, member, error, flags, block) do { \ |
| 575 | BUILD_BUG_ON(sizeof(path) < 128); /* ensure path is an array of at least 128 bytes */ \ |
| 576 | json_object *JSONC_TEMP_VAR(_j, __LINE__); \ |
| 577 | if (!json_object_object_get_ex(jobj, member, &JSONC_TEMP_VAR(_j, __LINE__))) { \ |
| 578 | if((flags) & JSONC_REQUIRED) { \ |
| 579 | buffer_sprintf(error, "missing '%s.%s' object", *path ? path : "", member); \ |
| 580 | return false; \ |
| 581 | } \ |
| 582 | } \ |
| 583 | else { \ |
| 584 | if (!json_object_is_type(JSONC_TEMP_VAR(_j, __LINE__), json_type_object)) { \ |
| 585 | if((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 586 | buffer_sprintf(error, "not an object '%s.%s'", *path ? path : "", member); \ |
| 587 | return false; \ |
| 588 | } \ |
| 589 | } \ |
| 590 | else { \ |
| 591 | json_object *JSONC_TEMP_VAR(saved_jobj, __LINE__) = jobj; \ |
| 592 | jobj = JSONC_TEMP_VAR(_j, __LINE__); \ |
| 593 | char JSONC_TEMP_VAR(saved_path, __LINE__)[sizeof(path)]; \ |
| 594 | strncpyz(JSONC_TEMP_VAR(saved_path, __LINE__), path, sizeof(JSONC_TEMP_VAR(saved_path, __LINE__))); \ |
| 595 | JSONC_PATH_CONCAT(path, sizeof(path), path, member, error); \ |
| 596 | /* Run the user's code block */ \ |
| 597 | block \ |
| 598 | /* Restore the previous scope's values */ \ |
| 599 | jobj = JSONC_TEMP_VAR(saved_jobj, __LINE__); \ |
| 600 | strncpyz(path, JSONC_TEMP_VAR(saved_path, __LINE__), sizeof(path)); \ |
| 601 | } \ |
| 602 | } \ |
| 603 | } while(0) |
| 604 | |
| 605 | #define JSONC_PARSE_ARRAY(jobj, path, member, error, flags, block) do { \ |
| 606 | BUILD_BUG_ON(sizeof(path) < 128); /* ensure path is an array of at least 128 bytes */ \ |
| 607 | json_object *JSONC_TEMP_VAR(_jarray, __LINE__); \ |
| 608 | if (!json_object_object_get_ex(jobj, member, &JSONC_TEMP_VAR(_jarray, __LINE__))) { \ |
| 609 | if ((flags) & JSONC_REQUIRED) { \ |
| 610 | buffer_sprintf(error, "missing '%s.%s' array", *path ? path : "", member); \ |
| 611 | return false; \ |
| 612 | } \ |
| 613 | } \ |
| 614 | else { \ |
| 615 | if (!json_object_is_type(JSONC_TEMP_VAR(_jarray, __LINE__), json_type_array)) { \ |
| 616 | if ((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 617 | buffer_sprintf(error, "not an array '%s.%s'", *path ? path : "", member); \ |
| 618 | return false; \ |
| 619 | } \ |
| 620 | } \ |
| 621 | else { \ |
| 622 | json_object *JSONC_TEMP_VAR(saved_jobj, __LINE__) = jobj; \ |
| 623 | jobj = JSONC_TEMP_VAR(_jarray, __LINE__); \ |
| 624 | char JSONC_TEMP_VAR(saved_path, __LINE__)[sizeof(path)]; \ |
| 625 | strncpyz(JSONC_TEMP_VAR(saved_path, __LINE__), path, sizeof(JSONC_TEMP_VAR(saved_path, __LINE__))); \ |
| 626 | JSONC_PATH_CONCAT(path, sizeof(path), path, member, error); \ |
| 627 | /* Run the user's code block */ \ |
| 628 | block \ |
| 629 | /* Restore the previous scope's values */ \ |
| 630 | jobj = JSONC_TEMP_VAR(saved_jobj, __LINE__); \ |
| 631 | strncpyz(path, JSONC_TEMP_VAR(saved_path, __LINE__), sizeof(path)); \ |
| 632 | } \ |
| 633 | } \ |
| 634 | } while(0) |
| 635 | |
| 636 | #define JSONC_PARSE_ARRAY_ITEM_OBJECT(jobj, path, index, flags, block) do { \ |
| 637 | size_t JSONC_TEMP_VAR(_array_len, __LINE__) = json_object_array_length(jobj); \ |
| 638 | for (index = 0; index < JSONC_TEMP_VAR(_array_len, __LINE__); index++) { \ |
| 639 | json_object *JSONC_TEMP_VAR(_jitem, __LINE__) = json_object_array_get_idx(jobj, index); \ |
| 640 | if (!json_object_is_type(JSONC_TEMP_VAR(_jitem, __LINE__), json_type_object)) { \ |
| 641 | if((flags) & (JSONC_REQUIRED | JSONC_STRICT)) { \ |
| 642 | buffer_sprintf(error, "not an object '%s[%zu]'", *path ? path : "", index); \ |
| 643 | return false; \ |
| 644 | } \ |
| 645 | } \ |
| 646 | else { \ |
| 647 | json_object *JSONC_TEMP_VAR(saved_jobj, __LINE__) = jobj; \ |
| 648 | jobj = JSONC_TEMP_VAR(_jitem, __LINE__); \ |
| 649 | char JSONC_TEMP_VAR(saved_path, __LINE__)[sizeof(path)]; \ |
| 650 | strncpyz(JSONC_TEMP_VAR(saved_path, __LINE__), path, sizeof(JSONC_TEMP_VAR(saved_path, __LINE__))); \ |
| 651 | JSONC_PATH_CONCAT_INDEX(path, sizeof(path), index, error); \ |
| 652 | /* Run the user's code block */ \ |
| 653 | block \ |
| 654 | /* Restore the previous scope's values */ \ |
| 655 | jobj = JSONC_TEMP_VAR(saved_jobj, __LINE__); \ |
| 656 | strncpyz(path, JSONC_TEMP_VAR(saved_path, __LINE__), sizeof(path)); \ |
| 657 | } \ |
| 658 | } \ |
| 659 | } while(0) |
| 660 | |
| 661 | typedef bool (*json_parse_function_payload_t)(json_object *jobj, void *data, BUFFER *error); |
| 662 | int rrd_call_function_error(BUFFER *wb, const char *msg, int code); |
| 663 | struct json_object *json_parse_function_payload_or_error(BUFFER *output, BUFFER *payload, int *code, json_parse_function_payload_t cb, void *cb_data); |
| 664 | |
| 665 | // return HTTP response code |
| 666 | int json_parse_payload_or_error(BUFFER *payload, BUFFER *error, json_parse_function_payload_t cb, void *cb_data); |
| 667 | |
| 668 | int json_c_parser_unittest(void); |
| 669 | |
| 670 | #endif //NETDATA_JSON_C_PARSER_INLINE_H |