w.deng | e87b500 | 2025-08-20 10:43:03 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. |
| 3 | * Michael Clark <michael@metaparadigm.com> |
| 4 | * Copyright (c) 2009 Hewlett-Packard Development Company, L.P. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the MIT license. See COPYING for details. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include "config.h" |
| 12 | |
| 13 | #include "strerror_override.h" |
| 14 | |
| 15 | #include <assert.h> |
| 16 | #ifdef HAVE_LIMITS_H |
| 17 | #include <limits.h> |
| 18 | #endif |
| 19 | #include <math.h> |
| 20 | #include <stddef.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | |
| 25 | #include "arraylist.h" |
| 26 | #include "debug.h" |
| 27 | #include "json_inttypes.h" |
| 28 | #include "json_object.h" |
| 29 | #include "json_object_private.h" |
| 30 | #include "json_util.h" |
| 31 | #include "linkhash.h" |
| 32 | #include "math_compat.h" |
| 33 | #include "printbuf.h" |
| 34 | #include "snprintf_compat.h" |
| 35 | #include "strdup_compat.h" |
| 36 | |
| 37 | /* Avoid ctype.h and locale overhead */ |
| 38 | #define is_plain_digit(c) ((c) >= '0' && (c) <= '9') |
| 39 | |
| 40 | #if SIZEOF_LONG_LONG != SIZEOF_INT64_T |
| 41 | #error The long long type is not 64-bits |
| 42 | #endif |
| 43 | |
| 44 | #ifndef SSIZE_T_MAX |
| 45 | #if SIZEOF_SSIZE_T == SIZEOF_INT |
| 46 | #define SSIZE_T_MAX INT_MAX |
| 47 | #elif SIZEOF_SSIZE_T == SIZEOF_LONG |
| 48 | #define SSIZE_T_MAX LONG_MAX |
| 49 | #elif SIZEOF_SSIZE_T == SIZEOF_LONG_LONG |
| 50 | #define SSIZE_T_MAX LLONG_MAX |
| 51 | #else |
| 52 | #error Unable to determine size of ssize_t |
| 53 | #endif |
| 54 | #endif |
| 55 | |
| 56 | const char *json_hex_chars = "0123456789abcdefABCDEF"; |
| 57 | |
| 58 | static void json_object_generic_delete(struct json_object *jso); |
| 59 | |
| 60 | #if defined(_MSC_VER) && (_MSC_VER <= 1800) |
| 61 | /* VS2013 doesn't know about "inline" */ |
| 62 | #define inline __inline |
| 63 | #elif defined(AIX_CC) |
| 64 | #define inline |
| 65 | #endif |
| 66 | |
| 67 | #ifdef __GNUC__ |
| 68 | #undef isnan |
| 69 | #undef isinf |
| 70 | #define isnan(x) __builtin_isnan(x) |
| 71 | #define isinf(x) __builtin_isinf(x) |
| 72 | #endif |
| 73 | |
| 74 | /* |
| 75 | * Helper functions to more safely cast to a particular type of json_object |
| 76 | */ |
| 77 | static inline struct json_object_object *JC_OBJECT(struct json_object *jso) |
| 78 | { |
| 79 | return (void *)jso; |
| 80 | } |
| 81 | static inline const struct json_object_object *JC_OBJECT_C(const struct json_object *jso) |
| 82 | { |
| 83 | return (const void *)jso; |
| 84 | } |
| 85 | static inline struct json_object_array *JC_ARRAY(struct json_object *jso) |
| 86 | { |
| 87 | return (void *)jso; |
| 88 | } |
| 89 | static inline const struct json_object_array *JC_ARRAY_C(const struct json_object *jso) |
| 90 | { |
| 91 | return (const void *)jso; |
| 92 | } |
| 93 | static inline struct json_object_boolean *JC_BOOL(struct json_object *jso) |
| 94 | { |
| 95 | return (void *)jso; |
| 96 | } |
| 97 | static inline const struct json_object_boolean *JC_BOOL_C(const struct json_object *jso) |
| 98 | { |
| 99 | return (const void *)jso; |
| 100 | } |
| 101 | static inline struct json_object_double *JC_DOUBLE(struct json_object *jso) |
| 102 | { |
| 103 | return (void *)jso; |
| 104 | } |
| 105 | static inline const struct json_object_double *JC_DOUBLE_C(const struct json_object *jso) |
| 106 | { |
| 107 | return (const void *)jso; |
| 108 | } |
| 109 | static inline struct json_object_int *JC_INT(struct json_object *jso) |
| 110 | { |
| 111 | return (void *)jso; |
| 112 | } |
| 113 | static inline const struct json_object_int *JC_INT_C(const struct json_object *jso) |
| 114 | { |
| 115 | return (const void *)jso; |
| 116 | } |
| 117 | static inline struct json_object_string *JC_STRING(struct json_object *jso) |
| 118 | { |
| 119 | return (void *)jso; |
| 120 | } |
| 121 | static inline const struct json_object_string *JC_STRING_C(const struct json_object *jso) |
| 122 | { |
| 123 | return (const void *)jso; |
| 124 | } |
| 125 | |
| 126 | #define JC_CONCAT(a, b) a##b |
| 127 | #define JC_CONCAT3(a, b, c) a##b##c |
| 128 | |
| 129 | #define JSON_OBJECT_NEW(jtype) \ |
| 130 | (struct JC_CONCAT(json_object_, jtype) *)json_object_new( \ |
| 131 | JC_CONCAT(json_type_, jtype), sizeof(struct JC_CONCAT(json_object_, jtype)), \ |
| 132 | &JC_CONCAT3(json_object_, jtype, _to_json_string)) |
| 133 | |
| 134 | static inline struct json_object *json_object_new(enum json_type o_type, size_t alloc_size, |
| 135 | json_object_to_json_string_fn *to_json_string); |
| 136 | |
| 137 | static void json_object_object_delete(struct json_object *jso_base); |
| 138 | static void json_object_string_delete(struct json_object *jso); |
| 139 | static void json_object_array_delete(struct json_object *jso); |
| 140 | |
| 141 | static json_object_to_json_string_fn json_object_object_to_json_string; |
| 142 | static json_object_to_json_string_fn json_object_boolean_to_json_string; |
| 143 | static json_object_to_json_string_fn json_object_double_to_json_string_default; |
| 144 | static json_object_to_json_string_fn json_object_int_to_json_string; |
| 145 | static json_object_to_json_string_fn json_object_string_to_json_string; |
| 146 | static json_object_to_json_string_fn json_object_array_to_json_string; |
| 147 | static json_object_to_json_string_fn _json_object_userdata_to_json_string; |
| 148 | |
| 149 | #ifndef JSON_NORETURN |
| 150 | #if defined(_MSC_VER) |
| 151 | #define JSON_NORETURN __declspec(noreturn) |
| 152 | #elif defined(__OS400__) |
| 153 | #define JSON_NORETURN |
| 154 | #else |
| 155 | /* 'cold' attribute is for optimization, telling the computer this code |
| 156 | * path is unlikely. |
| 157 | */ |
| 158 | #define JSON_NORETURN __attribute__((noreturn, cold)) |
| 159 | #endif |
| 160 | #endif |
| 161 | /** |
| 162 | * Abort and optionally print a message on standard error. |
| 163 | * This should be used rather than assert() for unconditional abortion |
| 164 | * (in particular for code paths which are never supposed to be run). |
| 165 | * */ |
| 166 | JSON_NORETURN static void json_abort(const char *message); |
| 167 | |
| 168 | /* helper for accessing the optimized string data component in json_object |
| 169 | */ |
| 170 | static inline char *get_string_component_mutable(struct json_object *jso) |
| 171 | { |
| 172 | if (JC_STRING_C(jso)->len < 0) |
| 173 | { |
| 174 | /* Due to json_object_set_string(), we might have a pointer */ |
| 175 | return JC_STRING(jso)->c_string.pdata; |
| 176 | } |
| 177 | return JC_STRING(jso)->c_string.idata; |
| 178 | } |
| 179 | static inline const char *get_string_component(const struct json_object *jso) |
| 180 | { |
| 181 | return get_string_component_mutable((void *)(uintptr_t)(const void *)jso); |
| 182 | } |
| 183 | |
| 184 | /* string escaping */ |
| 185 | |
| 186 | static int json_escape_str(struct printbuf *pb, const char *str, size_t len, int flags) |
| 187 | { |
| 188 | size_t pos = 0, start_offset = 0; |
| 189 | unsigned char c; |
| 190 | while (len) |
| 191 | { |
| 192 | --len; |
| 193 | c = str[pos]; |
| 194 | switch (c) |
| 195 | { |
| 196 | case '\b': |
| 197 | case '\n': |
| 198 | case '\r': |
| 199 | case '\t': |
| 200 | case '\f': |
| 201 | case '"': |
| 202 | case '\\': |
| 203 | case '/': |
| 204 | if ((flags & JSON_C_TO_STRING_NOSLASHESCAPE) && c == '/') |
| 205 | { |
| 206 | pos++; |
| 207 | break; |
| 208 | } |
| 209 | |
| 210 | if (pos > start_offset) |
| 211 | printbuf_memappend(pb, str + start_offset, pos - start_offset); |
| 212 | |
| 213 | if (c == '\b') |
| 214 | printbuf_memappend(pb, "\\b", 2); |
| 215 | else if (c == '\n') |
| 216 | printbuf_memappend(pb, "\\n", 2); |
| 217 | else if (c == '\r') |
| 218 | printbuf_memappend(pb, "\\r", 2); |
| 219 | else if (c == '\t') |
| 220 | printbuf_memappend(pb, "\\t", 2); |
| 221 | else if (c == '\f') |
| 222 | printbuf_memappend(pb, "\\f", 2); |
| 223 | else if (c == '"') |
| 224 | printbuf_memappend(pb, "\\\"", 2); |
| 225 | else if (c == '\\') |
| 226 | printbuf_memappend(pb, "\\\\", 2); |
| 227 | else if (c == '/') |
| 228 | printbuf_memappend(pb, "\\/", 2); |
| 229 | |
| 230 | start_offset = ++pos; |
| 231 | break; |
| 232 | default: |
| 233 | if (c < ' ') |
| 234 | { |
| 235 | char sbuf[7]; |
| 236 | if (pos > start_offset) |
| 237 | printbuf_memappend(pb, str + start_offset, |
| 238 | pos - start_offset); |
| 239 | snprintf(sbuf, sizeof(sbuf), "\\u00%c%c", json_hex_chars[c >> 4], |
| 240 | json_hex_chars[c & 0xf]); |
| 241 | printbuf_memappend_fast(pb, sbuf, (int)sizeof(sbuf) - 1); |
| 242 | start_offset = ++pos; |
| 243 | } |
| 244 | else |
| 245 | pos++; |
| 246 | } |
| 247 | } |
| 248 | if (pos > start_offset) |
| 249 | printbuf_memappend(pb, str + start_offset, pos - start_offset); |
| 250 | return 0; |
| 251 | } |
| 252 | |
| 253 | /* reference counting */ |
| 254 | |
| 255 | struct json_object *json_object_get(struct json_object *jso) |
| 256 | { |
| 257 | if (!jso) |
| 258 | return jso; |
| 259 | |
| 260 | // Don't overflow the refcounter. |
| 261 | assert(jso->_ref_count < UINT32_MAX); |
| 262 | |
| 263 | #if defined(HAVE_ATOMIC_BUILTINS) && defined(ENABLE_THREADING) |
| 264 | __sync_add_and_fetch(&jso->_ref_count, 1); |
| 265 | #else |
| 266 | ++jso->_ref_count; |
| 267 | #endif |
| 268 | |
| 269 | return jso; |
| 270 | } |
| 271 | |
| 272 | int json_object_put(struct json_object *jso) |
| 273 | { |
| 274 | if (!jso) |
| 275 | return 0; |
| 276 | |
| 277 | /* Avoid invalid free and crash explicitly instead of (silently) |
| 278 | * segfaulting. |
| 279 | */ |
| 280 | assert(jso->_ref_count > 0); |
| 281 | |
| 282 | #if defined(HAVE_ATOMIC_BUILTINS) && defined(ENABLE_THREADING) |
| 283 | /* Note: this only allow the refcount to remain correct |
| 284 | * when multiple threads are adjusting it. It is still an error |
| 285 | * for a thread to decrement the refcount if it doesn't "own" it, |
| 286 | * as that can result in the thread that loses the race to 0 |
| 287 | * operating on an already-freed object. |
| 288 | */ |
| 289 | if (__sync_sub_and_fetch(&jso->_ref_count, 1) > 0) |
| 290 | return 0; |
| 291 | #else |
| 292 | if (--jso->_ref_count > 0) |
| 293 | return 0; |
| 294 | #endif |
| 295 | |
| 296 | if (jso->_user_delete) |
| 297 | jso->_user_delete(jso, jso->_userdata); |
| 298 | switch (jso->o_type) |
| 299 | { |
| 300 | case json_type_object: json_object_object_delete(jso); break; |
| 301 | case json_type_array: json_object_array_delete(jso); break; |
| 302 | case json_type_string: json_object_string_delete(jso); break; |
| 303 | default: json_object_generic_delete(jso); break; |
| 304 | } |
| 305 | return 1; |
| 306 | } |
| 307 | |
| 308 | /* generic object construction and destruction parts */ |
| 309 | |
| 310 | static void json_object_generic_delete(struct json_object *jso) |
| 311 | { |
| 312 | printbuf_free(jso->_pb); |
| 313 | free(jso); |
| 314 | } |
| 315 | |
| 316 | static inline struct json_object *json_object_new(enum json_type o_type, size_t alloc_size, |
| 317 | json_object_to_json_string_fn *to_json_string) |
| 318 | { |
| 319 | struct json_object *jso; |
| 320 | |
| 321 | jso = (struct json_object *)malloc(alloc_size); |
| 322 | if (!jso) |
| 323 | return NULL; |
| 324 | |
| 325 | jso->o_type = o_type; |
| 326 | jso->_ref_count = 1; |
| 327 | jso->_to_json_string = to_json_string; |
| 328 | jso->_pb = NULL; |
| 329 | jso->_user_delete = NULL; |
| 330 | jso->_userdata = NULL; |
| 331 | //jso->... // Type-specific fields must be set by caller |
| 332 | |
| 333 | return jso; |
| 334 | } |
| 335 | |
| 336 | /* type checking functions */ |
| 337 | |
| 338 | int json_object_is_type(const struct json_object *jso, enum json_type type) |
| 339 | { |
| 340 | if (!jso) |
| 341 | return (type == json_type_null); |
| 342 | return (jso->o_type == type); |
| 343 | } |
| 344 | |
| 345 | enum json_type json_object_get_type(const struct json_object *jso) |
| 346 | { |
| 347 | if (!jso) |
| 348 | return json_type_null; |
| 349 | return jso->o_type; |
| 350 | } |
| 351 | |
| 352 | void *json_object_get_userdata(json_object *jso) |
| 353 | { |
| 354 | return jso ? jso->_userdata : NULL; |
| 355 | } |
| 356 | |
| 357 | void json_object_set_userdata(json_object *jso, void *userdata, json_object_delete_fn *user_delete) |
| 358 | { |
| 359 | // Can't return failure, so abort if we can't perform the operation. |
| 360 | assert(jso != NULL); |
| 361 | |
| 362 | // First, clean up any previously existing user info |
| 363 | if (jso->_user_delete) |
| 364 | jso->_user_delete(jso, jso->_userdata); |
| 365 | |
| 366 | jso->_userdata = userdata; |
| 367 | jso->_user_delete = user_delete; |
| 368 | } |
| 369 | |
| 370 | /* set a custom conversion to string */ |
| 371 | |
| 372 | void json_object_set_serializer(json_object *jso, json_object_to_json_string_fn *to_string_func, |
| 373 | void *userdata, json_object_delete_fn *user_delete) |
| 374 | { |
| 375 | json_object_set_userdata(jso, userdata, user_delete); |
| 376 | |
| 377 | if (to_string_func == NULL) |
| 378 | { |
| 379 | // Reset to the standard serialization function |
| 380 | switch (jso->o_type) |
| 381 | { |
| 382 | case json_type_null: jso->_to_json_string = NULL; break; |
| 383 | case json_type_boolean: |
| 384 | jso->_to_json_string = &json_object_boolean_to_json_string; |
| 385 | break; |
| 386 | case json_type_double: |
| 387 | jso->_to_json_string = &json_object_double_to_json_string_default; |
| 388 | break; |
| 389 | case json_type_int: jso->_to_json_string = &json_object_int_to_json_string; break; |
| 390 | case json_type_object: |
| 391 | jso->_to_json_string = &json_object_object_to_json_string; |
| 392 | break; |
| 393 | case json_type_array: |
| 394 | jso->_to_json_string = &json_object_array_to_json_string; |
| 395 | break; |
| 396 | case json_type_string: |
| 397 | jso->_to_json_string = &json_object_string_to_json_string; |
| 398 | break; |
| 399 | } |
| 400 | return; |
| 401 | } |
| 402 | |
| 403 | jso->_to_json_string = to_string_func; |
| 404 | } |
| 405 | |
| 406 | /* extended conversion to string */ |
| 407 | |
| 408 | const char *json_object_to_json_string_length(struct json_object *jso, int flags, size_t *length) |
| 409 | { |
| 410 | const char *r = NULL; |
| 411 | size_t s = 0; |
| 412 | |
| 413 | if (!jso) |
| 414 | { |
| 415 | s = 4; |
| 416 | r = "null"; |
| 417 | } |
| 418 | else if ((jso->_pb) || (jso->_pb = printbuf_new())) |
| 419 | { |
| 420 | printbuf_reset(jso->_pb); |
| 421 | |
| 422 | if (jso->_to_json_string(jso, jso->_pb, 0, flags) >= 0) |
| 423 | { |
| 424 | s = (size_t)jso->_pb->bpos; |
| 425 | r = jso->_pb->buf; |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | if (length) |
| 430 | *length = s; |
| 431 | return r; |
| 432 | } |
| 433 | |
| 434 | const char *json_object_to_json_string_ext(struct json_object *jso, int flags) |
| 435 | { |
| 436 | return json_object_to_json_string_length(jso, flags, NULL); |
| 437 | } |
| 438 | |
| 439 | /* backwards-compatible conversion to string */ |
| 440 | |
| 441 | const char *json_object_to_json_string(struct json_object *jso) |
| 442 | { |
| 443 | return json_object_to_json_string_ext(jso, JSON_C_TO_STRING_SPACED); |
| 444 | } |
| 445 | |
| 446 | static void indent(struct printbuf *pb, int level, int flags) |
| 447 | { |
| 448 | if (flags & JSON_C_TO_STRING_PRETTY) |
| 449 | { |
| 450 | if (flags & JSON_C_TO_STRING_PRETTY_TAB) |
| 451 | { |
| 452 | printbuf_memset(pb, -1, '\t', level); |
| 453 | } |
| 454 | else |
| 455 | { |
| 456 | printbuf_memset(pb, -1, ' ', level * 2); |
| 457 | } |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | /* json_object_object */ |
| 462 | |
| 463 | static int json_object_object_to_json_string(struct json_object *jso, struct printbuf *pb, |
| 464 | int level, int flags) |
| 465 | { |
| 466 | int had_children = 0; |
| 467 | struct json_object_iter iter; |
| 468 | |
| 469 | printbuf_strappend(pb, "{" /*}*/); |
| 470 | json_object_object_foreachC(jso, iter) |
| 471 | { |
| 472 | if (had_children) |
| 473 | { |
| 474 | printbuf_strappend(pb, ","); |
| 475 | } |
| 476 | if (flags & JSON_C_TO_STRING_PRETTY) |
| 477 | printbuf_strappend(pb, "\n"); |
| 478 | had_children = 1; |
| 479 | if (flags & JSON_C_TO_STRING_SPACED && !(flags & JSON_C_TO_STRING_PRETTY)) |
| 480 | printbuf_strappend(pb, " "); |
| 481 | indent(pb, level + 1, flags); |
| 482 | printbuf_strappend(pb, "\""); |
| 483 | json_escape_str(pb, iter.key, strlen(iter.key), flags); |
| 484 | if (flags & JSON_C_TO_STRING_SPACED) |
| 485 | printbuf_strappend(pb, "\": "); |
| 486 | else |
| 487 | printbuf_strappend(pb, "\":"); |
| 488 | if (iter.val == NULL) |
| 489 | printbuf_strappend(pb, "null"); |
| 490 | else if (iter.val->_to_json_string(iter.val, pb, level + 1, flags) < 0) |
| 491 | return -1; |
| 492 | } |
| 493 | if ((flags & JSON_C_TO_STRING_PRETTY) && had_children) |
| 494 | { |
| 495 | printbuf_strappend(pb, "\n"); |
| 496 | indent(pb, level, flags); |
| 497 | } |
| 498 | if (flags & JSON_C_TO_STRING_SPACED && !(flags & JSON_C_TO_STRING_PRETTY)) |
| 499 | return printbuf_strappend(pb, /*{*/ " }"); |
| 500 | else |
| 501 | return printbuf_strappend(pb, /*{*/ "}"); |
| 502 | } |
| 503 | |
| 504 | static void json_object_lh_entry_free(struct lh_entry *ent) |
| 505 | { |
| 506 | if (!lh_entry_k_is_constant(ent)) |
| 507 | free(lh_entry_k(ent)); |
| 508 | json_object_put((struct json_object *)lh_entry_v(ent)); |
| 509 | } |
| 510 | |
| 511 | static void json_object_object_delete(struct json_object *jso_base) |
| 512 | { |
| 513 | lh_table_free(JC_OBJECT(jso_base)->c_object); |
| 514 | json_object_generic_delete(jso_base); |
| 515 | } |
| 516 | |
| 517 | struct json_object *json_object_new_object(void) |
| 518 | { |
| 519 | struct json_object_object *jso = JSON_OBJECT_NEW(object); |
| 520 | if (!jso) |
| 521 | return NULL; |
| 522 | jso->c_object = |
| 523 | lh_kchar_table_new(JSON_OBJECT_DEF_HASH_ENTRIES, &json_object_lh_entry_free); |
| 524 | if (!jso->c_object) |
| 525 | { |
| 526 | json_object_generic_delete(&jso->base); |
| 527 | errno = ENOMEM; |
| 528 | return NULL; |
| 529 | } |
| 530 | return &jso->base; |
| 531 | } |
| 532 | |
| 533 | struct lh_table *json_object_get_object(const struct json_object *jso) |
| 534 | { |
| 535 | if (!jso) |
| 536 | return NULL; |
| 537 | switch (jso->o_type) |
| 538 | { |
| 539 | case json_type_object: return JC_OBJECT_C(jso)->c_object; |
| 540 | default: return NULL; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | int json_object_object_add_ex(struct json_object *jso, const char *const key, |
| 545 | struct json_object *const val, const unsigned opts) |
| 546 | { |
| 547 | struct json_object *existing_value = NULL; |
| 548 | struct lh_entry *existing_entry; |
| 549 | unsigned long hash; |
| 550 | |
| 551 | assert(json_object_get_type(jso) == json_type_object); |
| 552 | |
| 553 | // We lookup the entry and replace the value, rather than just deleting |
| 554 | // and re-adding it, so the existing key remains valid. |
| 555 | hash = lh_get_hash(JC_OBJECT(jso)->c_object, (const void *)key); |
| 556 | existing_entry = |
| 557 | (opts & JSON_C_OBJECT_ADD_KEY_IS_NEW) |
| 558 | ? NULL |
| 559 | : lh_table_lookup_entry_w_hash(JC_OBJECT(jso)->c_object, (const void *)key, hash); |
| 560 | |
| 561 | // The caller must avoid creating loops in the object tree, but do a |
| 562 | // quick check anyway to make sure we're not creating a trivial loop. |
| 563 | if (jso == val) |
| 564 | return -1; |
| 565 | |
| 566 | if (!existing_entry) |
| 567 | { |
| 568 | const void *const k = |
| 569 | (opts & JSON_C_OBJECT_ADD_CONSTANT_KEY) ? (const void *)key : strdup(key); |
| 570 | if (k == NULL) |
| 571 | return -1; |
| 572 | return lh_table_insert_w_hash(JC_OBJECT(jso)->c_object, k, val, hash, opts); |
| 573 | } |
| 574 | existing_value = (json_object *)lh_entry_v(existing_entry); |
| 575 | if (existing_value) |
| 576 | json_object_put(existing_value); |
| 577 | lh_entry_set_val(existing_entry, val); |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | int json_object_object_add(struct json_object *jso, const char *key, struct json_object *val) |
| 582 | { |
| 583 | return json_object_object_add_ex(jso, key, val, 0); |
| 584 | } |
| 585 | |
| 586 | int json_object_object_length(const struct json_object *jso) |
| 587 | { |
| 588 | assert(json_object_get_type(jso) == json_type_object); |
| 589 | return lh_table_length(JC_OBJECT_C(jso)->c_object); |
| 590 | } |
| 591 | |
| 592 | size_t json_c_object_sizeof(void) |
| 593 | { |
| 594 | return sizeof(struct json_object); |
| 595 | } |
| 596 | |
| 597 | struct json_object *json_object_object_get(const struct json_object *jso, const char *key) |
| 598 | { |
| 599 | struct json_object *result = NULL; |
| 600 | json_object_object_get_ex(jso, key, &result); |
| 601 | return result; |
| 602 | } |
| 603 | |
| 604 | json_bool json_object_object_get_ex(const struct json_object *jso, const char *key, |
| 605 | struct json_object **value) |
| 606 | { |
| 607 | if (value != NULL) |
| 608 | *value = NULL; |
| 609 | |
| 610 | if (NULL == jso) |
| 611 | return 0; |
| 612 | |
| 613 | switch (jso->o_type) |
| 614 | { |
| 615 | case json_type_object: |
| 616 | return lh_table_lookup_ex(JC_OBJECT_C(jso)->c_object, (const void *)key, |
| 617 | (void **)value); |
| 618 | default: |
| 619 | if (value != NULL) |
| 620 | *value = NULL; |
| 621 | return 0; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | void json_object_object_del(struct json_object *jso, const char *key) |
| 626 | { |
| 627 | assert(json_object_get_type(jso) == json_type_object); |
| 628 | lh_table_delete(JC_OBJECT(jso)->c_object, key); |
| 629 | } |
| 630 | |
| 631 | /* json_object_boolean */ |
| 632 | |
| 633 | static int json_object_boolean_to_json_string(struct json_object *jso, struct printbuf *pb, |
| 634 | int level, int flags) |
| 635 | { |
| 636 | if (JC_BOOL(jso)->c_boolean) |
| 637 | return printbuf_strappend(pb, "true"); |
| 638 | return printbuf_strappend(pb, "false"); |
| 639 | } |
| 640 | |
| 641 | struct json_object *json_object_new_boolean(json_bool b) |
| 642 | { |
| 643 | struct json_object_boolean *jso = JSON_OBJECT_NEW(boolean); |
| 644 | if (!jso) |
| 645 | return NULL; |
| 646 | jso->c_boolean = b; |
| 647 | return &jso->base; |
| 648 | } |
| 649 | |
| 650 | json_bool json_object_get_boolean(const struct json_object *jso) |
| 651 | { |
| 652 | if (!jso) |
| 653 | return 0; |
| 654 | switch (jso->o_type) |
| 655 | { |
| 656 | case json_type_boolean: return JC_BOOL_C(jso)->c_boolean; |
| 657 | case json_type_int: |
| 658 | switch (JC_INT_C(jso)->cint_type) |
| 659 | { |
| 660 | case json_object_int_type_int64: return (JC_INT_C(jso)->cint.c_int64 != 0); |
| 661 | case json_object_int_type_uint64: return (JC_INT_C(jso)->cint.c_uint64 != 0); |
| 662 | default: json_abort("invalid cint_type"); |
| 663 | } |
| 664 | case json_type_double: return (JC_DOUBLE_C(jso)->c_double != 0); |
| 665 | case json_type_string: return (JC_STRING_C(jso)->len != 0); |
| 666 | default: return 0; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | int json_object_set_boolean(struct json_object *jso, json_bool new_value) |
| 671 | { |
| 672 | if (!jso || jso->o_type != json_type_boolean) |
| 673 | return 0; |
| 674 | JC_BOOL(jso)->c_boolean = new_value; |
| 675 | return 1; |
| 676 | } |
| 677 | |
| 678 | /* json_object_int */ |
| 679 | |
| 680 | static int json_object_int_to_json_string(struct json_object *jso, struct printbuf *pb, int level, |
| 681 | int flags) |
| 682 | { |
| 683 | /* room for 19 digits, the sign char, and a null term */ |
| 684 | char sbuf[21]; |
| 685 | if (JC_INT(jso)->cint_type == json_object_int_type_int64) |
| 686 | snprintf(sbuf, sizeof(sbuf), "%" PRId64, JC_INT(jso)->cint.c_int64); |
| 687 | else |
| 688 | snprintf(sbuf, sizeof(sbuf), "%" PRIu64, JC_INT(jso)->cint.c_uint64); |
| 689 | return printbuf_memappend(pb, sbuf, strlen(sbuf)); |
| 690 | } |
| 691 | |
| 692 | struct json_object *json_object_new_int(int32_t i) |
| 693 | { |
| 694 | return json_object_new_int64(i); |
| 695 | } |
| 696 | |
| 697 | int32_t json_object_get_int(const struct json_object *jso) |
| 698 | { |
| 699 | int64_t cint64 = 0; |
| 700 | double cdouble; |
| 701 | enum json_type o_type; |
| 702 | |
| 703 | if (!jso) |
| 704 | return 0; |
| 705 | |
| 706 | o_type = jso->o_type; |
| 707 | if (o_type == json_type_int) |
| 708 | { |
| 709 | const struct json_object_int *jsoint = JC_INT_C(jso); |
| 710 | if (jsoint->cint_type == json_object_int_type_int64) |
| 711 | { |
| 712 | cint64 = jsoint->cint.c_int64; |
| 713 | } |
| 714 | else |
| 715 | { |
| 716 | if (jsoint->cint.c_uint64 >= INT64_MAX) |
| 717 | cint64 = INT64_MAX; |
| 718 | else |
| 719 | cint64 = (int64_t)jsoint->cint.c_uint64; |
| 720 | } |
| 721 | } |
| 722 | else if (o_type == json_type_string) |
| 723 | { |
| 724 | /* |
| 725 | * Parse strings into 64-bit numbers, then use the |
| 726 | * 64-to-32-bit number handling below. |
| 727 | */ |
| 728 | if (json_parse_int64(get_string_component(jso), &cint64) != 0) |
| 729 | return 0; /* whoops, it didn't work. */ |
| 730 | o_type = json_type_int; |
| 731 | } |
| 732 | |
| 733 | switch (o_type) |
| 734 | { |
| 735 | case json_type_int: |
| 736 | /* Make sure we return the correct values for out of range numbers. */ |
| 737 | if (cint64 <= INT32_MIN) |
| 738 | return INT32_MIN; |
| 739 | if (cint64 >= INT32_MAX) |
| 740 | return INT32_MAX; |
| 741 | return (int32_t)cint64; |
| 742 | case json_type_double: |
| 743 | cdouble = JC_DOUBLE_C(jso)->c_double; |
| 744 | if (cdouble <= INT32_MIN) |
| 745 | return INT32_MIN; |
| 746 | if (cdouble >= INT32_MAX) |
| 747 | return INT32_MAX; |
| 748 | return (int32_t)cdouble; |
| 749 | case json_type_boolean: return JC_BOOL_C(jso)->c_boolean; |
| 750 | default: return 0; |
| 751 | } |
| 752 | } |
| 753 | |
| 754 | int json_object_set_int(struct json_object *jso, int new_value) |
| 755 | { |
| 756 | return json_object_set_int64(jso, (int64_t)new_value); |
| 757 | } |
| 758 | |
| 759 | struct json_object *json_object_new_int64(int64_t i) |
| 760 | { |
| 761 | struct json_object_int *jso = JSON_OBJECT_NEW(int); |
| 762 | if (!jso) |
| 763 | return NULL; |
| 764 | jso->cint.c_int64 = i; |
| 765 | jso->cint_type = json_object_int_type_int64; |
| 766 | return &jso->base; |
| 767 | } |
| 768 | |
| 769 | struct json_object *json_object_new_uint64(uint64_t i) |
| 770 | { |
| 771 | struct json_object_int *jso = JSON_OBJECT_NEW(int); |
| 772 | if (!jso) |
| 773 | return NULL; |
| 774 | jso->cint.c_uint64 = i; |
| 775 | jso->cint_type = json_object_int_type_uint64; |
| 776 | return &jso->base; |
| 777 | } |
| 778 | |
| 779 | int64_t json_object_get_int64(const struct json_object *jso) |
| 780 | { |
| 781 | int64_t cint; |
| 782 | |
| 783 | if (!jso) |
| 784 | return 0; |
| 785 | switch (jso->o_type) |
| 786 | { |
| 787 | case json_type_int: |
| 788 | { |
| 789 | const struct json_object_int *jsoint = JC_INT_C(jso); |
| 790 | switch (jsoint->cint_type) |
| 791 | { |
| 792 | case json_object_int_type_int64: return jsoint->cint.c_int64; |
| 793 | case json_object_int_type_uint64: |
| 794 | if (jsoint->cint.c_uint64 >= INT64_MAX) |
| 795 | return INT64_MAX; |
| 796 | return (int64_t)jsoint->cint.c_uint64; |
| 797 | default: json_abort("invalid cint_type"); |
| 798 | } |
| 799 | } |
| 800 | case json_type_double: |
| 801 | // INT64_MAX can't be exactly represented as a double |
| 802 | // so cast to tell the compiler it's ok to round up. |
| 803 | if (JC_DOUBLE_C(jso)->c_double >= (double)INT64_MAX) |
| 804 | return INT64_MAX; |
| 805 | if (JC_DOUBLE_C(jso)->c_double <= INT64_MIN) |
| 806 | return INT64_MIN; |
| 807 | return (int64_t)JC_DOUBLE_C(jso)->c_double; |
| 808 | case json_type_boolean: return JC_BOOL_C(jso)->c_boolean; |
| 809 | case json_type_string: |
| 810 | if (json_parse_int64(get_string_component(jso), &cint) == 0) |
| 811 | return cint; |
| 812 | /* FALLTHRU */ |
| 813 | default: return 0; |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | uint64_t json_object_get_uint64(const struct json_object *jso) |
| 818 | { |
| 819 | uint64_t cuint; |
| 820 | |
| 821 | if (!jso) |
| 822 | return 0; |
| 823 | switch (jso->o_type) |
| 824 | { |
| 825 | case json_type_int: |
| 826 | { |
| 827 | const struct json_object_int *jsoint = JC_INT_C(jso); |
| 828 | switch (jsoint->cint_type) |
| 829 | { |
| 830 | case json_object_int_type_int64: |
| 831 | if (jsoint->cint.c_int64 < 0) |
| 832 | return 0; |
| 833 | return (uint64_t)jsoint->cint.c_int64; |
| 834 | case json_object_int_type_uint64: return jsoint->cint.c_uint64; |
| 835 | default: json_abort("invalid cint_type"); |
| 836 | } |
| 837 | } |
| 838 | case json_type_double: |
| 839 | // UINT64_MAX can't be exactly represented as a double |
| 840 | // so cast to tell the compiler it's ok to round up. |
| 841 | if (JC_DOUBLE_C(jso)->c_double >= (double)UINT64_MAX) |
| 842 | return UINT64_MAX; |
| 843 | if (JC_DOUBLE_C(jso)->c_double < 0) |
| 844 | return 0; |
| 845 | return (uint64_t)JC_DOUBLE_C(jso)->c_double; |
| 846 | case json_type_boolean: return JC_BOOL_C(jso)->c_boolean; |
| 847 | case json_type_string: |
| 848 | if (json_parse_uint64(get_string_component(jso), &cuint) == 0) |
| 849 | return cuint; |
| 850 | /* FALLTHRU */ |
| 851 | default: return 0; |
| 852 | } |
| 853 | } |
| 854 | |
| 855 | int json_object_set_int64(struct json_object *jso, int64_t new_value) |
| 856 | { |
| 857 | if (!jso || jso->o_type != json_type_int) |
| 858 | return 0; |
| 859 | JC_INT(jso)->cint.c_int64 = new_value; |
| 860 | JC_INT(jso)->cint_type = json_object_int_type_int64; |
| 861 | return 1; |
| 862 | } |
| 863 | |
| 864 | int json_object_set_uint64(struct json_object *jso, uint64_t new_value) |
| 865 | { |
| 866 | if (!jso || jso->o_type != json_type_int) |
| 867 | return 0; |
| 868 | JC_INT(jso)->cint.c_uint64 = new_value; |
| 869 | JC_INT(jso)->cint_type = json_object_int_type_uint64; |
| 870 | return 1; |
| 871 | } |
| 872 | |
| 873 | int json_object_int_inc(struct json_object *jso, int64_t val) |
| 874 | { |
| 875 | struct json_object_int *jsoint; |
| 876 | if (!jso || jso->o_type != json_type_int) |
| 877 | return 0; |
| 878 | jsoint = JC_INT(jso); |
| 879 | switch (jsoint->cint_type) |
| 880 | { |
| 881 | case json_object_int_type_int64: |
| 882 | if (val > 0 && jsoint->cint.c_int64 > INT64_MAX - val) |
| 883 | { |
| 884 | jsoint->cint.c_uint64 = (uint64_t)jsoint->cint.c_int64 + (uint64_t)val; |
| 885 | jsoint->cint_type = json_object_int_type_uint64; |
| 886 | } |
| 887 | else if (val < 0 && jsoint->cint.c_int64 < INT64_MIN - val) |
| 888 | { |
| 889 | jsoint->cint.c_int64 = INT64_MIN; |
| 890 | } |
| 891 | else |
| 892 | { |
| 893 | jsoint->cint.c_int64 += val; |
| 894 | } |
| 895 | return 1; |
| 896 | case json_object_int_type_uint64: |
| 897 | if (val > 0 && jsoint->cint.c_uint64 > UINT64_MAX - (uint64_t)val) |
| 898 | { |
| 899 | jsoint->cint.c_uint64 = UINT64_MAX; |
| 900 | } |
| 901 | else if (val < 0 && jsoint->cint.c_uint64 < (uint64_t)(-val)) |
| 902 | { |
| 903 | jsoint->cint.c_int64 = (int64_t)jsoint->cint.c_uint64 + val; |
| 904 | jsoint->cint_type = json_object_int_type_int64; |
| 905 | } |
| 906 | else if (val < 0 && jsoint->cint.c_uint64 >= (uint64_t)(-val)) |
| 907 | { |
| 908 | jsoint->cint.c_uint64 -= (uint64_t)(-val); |
| 909 | } |
| 910 | else |
| 911 | { |
| 912 | jsoint->cint.c_uint64 += val; |
| 913 | } |
| 914 | return 1; |
| 915 | default: json_abort("invalid cint_type"); |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | /* json_object_double */ |
| 920 | |
| 921 | #if defined(HAVE___THREAD) |
| 922 | // i.e. __thread or __declspec(thread) |
| 923 | static SPEC___THREAD char *tls_serialization_float_format = NULL; |
| 924 | #endif |
| 925 | static char *global_serialization_float_format = NULL; |
| 926 | |
| 927 | int json_c_set_serialization_double_format(const char *double_format, int global_or_thread) |
| 928 | { |
| 929 | if (global_or_thread == JSON_C_OPTION_GLOBAL) |
| 930 | { |
| 931 | #if defined(HAVE___THREAD) |
| 932 | if (tls_serialization_float_format) |
| 933 | { |
| 934 | free(tls_serialization_float_format); |
| 935 | tls_serialization_float_format = NULL; |
| 936 | } |
| 937 | #endif |
| 938 | if (global_serialization_float_format) |
| 939 | free(global_serialization_float_format); |
| 940 | if (double_format) |
| 941 | { |
| 942 | char *p = strdup(double_format); |
| 943 | if (p == NULL) |
| 944 | { |
| 945 | _json_c_set_last_err("json_c_set_serialization_double_format: " |
| 946 | "out of memory\n"); |
| 947 | return -1; |
| 948 | } |
| 949 | global_serialization_float_format = p; |
| 950 | } |
| 951 | else |
| 952 | { |
| 953 | global_serialization_float_format = NULL; |
| 954 | } |
| 955 | } |
| 956 | else if (global_or_thread == JSON_C_OPTION_THREAD) |
| 957 | { |
| 958 | #if defined(HAVE___THREAD) |
| 959 | if (tls_serialization_float_format) |
| 960 | { |
| 961 | free(tls_serialization_float_format); |
| 962 | tls_serialization_float_format = NULL; |
| 963 | } |
| 964 | if (double_format) |
| 965 | { |
| 966 | char *p = strdup(double_format); |
| 967 | if (p == NULL) |
| 968 | { |
| 969 | _json_c_set_last_err("json_c_set_serialization_double_format: " |
| 970 | "out of memory\n"); |
| 971 | return -1; |
| 972 | } |
| 973 | tls_serialization_float_format = p; |
| 974 | } |
| 975 | else |
| 976 | { |
| 977 | tls_serialization_float_format = NULL; |
| 978 | } |
| 979 | #else |
| 980 | _json_c_set_last_err("json_c_set_serialization_double_format: not compiled " |
| 981 | "with __thread support\n"); |
| 982 | return -1; |
| 983 | #endif |
| 984 | } |
| 985 | else |
| 986 | { |
| 987 | _json_c_set_last_err("json_c_set_serialization_double_format: invalid " |
| 988 | "global_or_thread value: %d\n", global_or_thread); |
| 989 | return -1; |
| 990 | } |
| 991 | return 0; |
| 992 | } |
| 993 | |
| 994 | static int json_object_double_to_json_string_format(struct json_object *jso, struct printbuf *pb, |
| 995 | int level, int flags, const char *format) |
| 996 | { |
| 997 | struct json_object_double *jsodbl = JC_DOUBLE(jso); |
| 998 | char buf[128], *p, *q; |
| 999 | int size; |
| 1000 | /* Although JSON RFC does not support |
| 1001 | * NaN or Infinity as numeric values |
| 1002 | * ECMA 262 section 9.8.1 defines |
| 1003 | * how to handle these cases as strings |
| 1004 | */ |
| 1005 | if (isnan(jsodbl->c_double)) |
| 1006 | { |
| 1007 | size = snprintf(buf, sizeof(buf), "NaN"); |
| 1008 | } |
| 1009 | else if (isinf(jsodbl->c_double)) |
| 1010 | { |
| 1011 | if (jsodbl->c_double > 0) |
| 1012 | size = snprintf(buf, sizeof(buf), "Infinity"); |
| 1013 | else |
| 1014 | size = snprintf(buf, sizeof(buf), "-Infinity"); |
| 1015 | } |
| 1016 | else |
| 1017 | { |
| 1018 | const char *std_format = "%.17g"; |
| 1019 | int format_drops_decimals = 0; |
| 1020 | int looks_numeric = 0; |
| 1021 | |
| 1022 | if (!format) |
| 1023 | { |
| 1024 | #if defined(HAVE___THREAD) |
| 1025 | if (tls_serialization_float_format) |
| 1026 | format = tls_serialization_float_format; |
| 1027 | else |
| 1028 | #endif |
| 1029 | if (global_serialization_float_format) |
| 1030 | format = global_serialization_float_format; |
| 1031 | else |
| 1032 | format = std_format; |
| 1033 | } |
| 1034 | size = snprintf(buf, sizeof(buf), format, jsodbl->c_double); |
| 1035 | |
| 1036 | if (size < 0) |
| 1037 | return -1; |
| 1038 | |
| 1039 | p = strchr(buf, ','); |
| 1040 | if (p) |
| 1041 | *p = '.'; |
| 1042 | else |
| 1043 | p = strchr(buf, '.'); |
| 1044 | |
| 1045 | if (format == std_format || strstr(format, ".0f") == NULL) |
| 1046 | format_drops_decimals = 1; |
| 1047 | |
| 1048 | looks_numeric = /* Looks like *some* kind of number */ |
| 1049 | is_plain_digit(buf[0]) || (size > 1 && buf[0] == '-' && is_plain_digit(buf[1])); |
| 1050 | |
| 1051 | if (size < (int)sizeof(buf) - 2 && looks_numeric && !p && /* Has no decimal point */ |
| 1052 | strchr(buf, 'e') == NULL && /* Not scientific notation */ |
| 1053 | format_drops_decimals) |
| 1054 | { |
| 1055 | // Ensure it looks like a float, even if snprintf didn't, |
| 1056 | // unless a custom format is set to omit the decimal. |
| 1057 | strcat(buf, ".0"); |
| 1058 | size += 2; |
| 1059 | } |
| 1060 | if (p && (flags & JSON_C_TO_STRING_NOZERO)) |
| 1061 | { |
| 1062 | /* last useful digit, always keep 1 zero */ |
| 1063 | p++; |
| 1064 | for (q = p; *q; q++) |
| 1065 | { |
| 1066 | if (*q != '0') |
| 1067 | p = q; |
| 1068 | } |
| 1069 | /* drop trailing zeroes */ |
| 1070 | if (*p != 0) |
| 1071 | *(++p) = 0; |
| 1072 | size = p - buf; |
| 1073 | } |
| 1074 | } |
| 1075 | // although unlikely, snprintf can fail |
| 1076 | if (size < 0) |
| 1077 | return -1; |
| 1078 | |
| 1079 | if (size >= (int)sizeof(buf)) |
| 1080 | // The standard formats are guaranteed not to overrun the buffer, |
| 1081 | // but if a custom one happens to do so, just silently truncate. |
| 1082 | size = sizeof(buf) - 1; |
| 1083 | printbuf_memappend(pb, buf, size); |
| 1084 | return size; |
| 1085 | } |
| 1086 | |
| 1087 | static int json_object_double_to_json_string_default(struct json_object *jso, struct printbuf *pb, |
| 1088 | int level, int flags) |
| 1089 | { |
| 1090 | return json_object_double_to_json_string_format(jso, pb, level, flags, NULL); |
| 1091 | } |
| 1092 | |
| 1093 | int json_object_double_to_json_string(struct json_object *jso, struct printbuf *pb, int level, |
| 1094 | int flags) |
| 1095 | { |
| 1096 | return json_object_double_to_json_string_format(jso, pb, level, flags, |
| 1097 | (const char *)jso->_userdata); |
| 1098 | } |
| 1099 | |
| 1100 | struct json_object *json_object_new_double(double d) |
| 1101 | { |
| 1102 | struct json_object_double *jso = JSON_OBJECT_NEW(double); |
| 1103 | if (!jso) |
| 1104 | return NULL; |
| 1105 | jso->base._to_json_string = &json_object_double_to_json_string_default; |
| 1106 | jso->c_double = d; |
| 1107 | return &jso->base; |
| 1108 | } |
| 1109 | |
| 1110 | struct json_object *json_object_new_double_s(double d, const char *ds) |
| 1111 | { |
| 1112 | char *new_ds; |
| 1113 | struct json_object *jso = json_object_new_double(d); |
| 1114 | if (!jso) |
| 1115 | return NULL; |
| 1116 | |
| 1117 | new_ds = strdup(ds); |
| 1118 | if (!new_ds) |
| 1119 | { |
| 1120 | json_object_generic_delete(jso); |
| 1121 | errno = ENOMEM; |
| 1122 | return NULL; |
| 1123 | } |
| 1124 | json_object_set_serializer(jso, _json_object_userdata_to_json_string, new_ds, |
| 1125 | json_object_free_userdata); |
| 1126 | return jso; |
| 1127 | } |
| 1128 | |
| 1129 | /* |
| 1130 | * A wrapper around json_object_userdata_to_json_string() used only |
| 1131 | * by json_object_new_double_s() just so json_object_set_double() can |
| 1132 | * detect when it needs to reset the serializer to the default. |
| 1133 | */ |
| 1134 | static int _json_object_userdata_to_json_string(struct json_object *jso, struct printbuf *pb, |
| 1135 | int level, int flags) |
| 1136 | { |
| 1137 | return json_object_userdata_to_json_string(jso, pb, level, flags); |
| 1138 | } |
| 1139 | |
| 1140 | int json_object_userdata_to_json_string(struct json_object *jso, struct printbuf *pb, int level, |
| 1141 | int flags) |
| 1142 | { |
| 1143 | int userdata_len = strlen((const char *)jso->_userdata); |
| 1144 | printbuf_memappend(pb, (const char *)jso->_userdata, userdata_len); |
| 1145 | return userdata_len; |
| 1146 | } |
| 1147 | |
| 1148 | void json_object_free_userdata(struct json_object *jso, void *userdata) |
| 1149 | { |
| 1150 | free(userdata); |
| 1151 | } |
| 1152 | |
| 1153 | double json_object_get_double(const struct json_object *jso) |
| 1154 | { |
| 1155 | double cdouble; |
| 1156 | char *errPtr = NULL; |
| 1157 | |
| 1158 | if (!jso) |
| 1159 | return 0.0; |
| 1160 | switch (jso->o_type) |
| 1161 | { |
| 1162 | case json_type_double: return JC_DOUBLE_C(jso)->c_double; |
| 1163 | case json_type_int: |
| 1164 | switch (JC_INT_C(jso)->cint_type) |
| 1165 | { |
| 1166 | case json_object_int_type_int64: return JC_INT_C(jso)->cint.c_int64; |
| 1167 | case json_object_int_type_uint64: return JC_INT_C(jso)->cint.c_uint64; |
| 1168 | default: json_abort("invalid cint_type"); |
| 1169 | } |
| 1170 | case json_type_boolean: return JC_BOOL_C(jso)->c_boolean; |
| 1171 | case json_type_string: |
| 1172 | errno = 0; |
| 1173 | cdouble = strtod(get_string_component(jso), &errPtr); |
| 1174 | |
| 1175 | /* if conversion stopped at the first character, return 0.0 */ |
| 1176 | if (errPtr == get_string_component(jso)) |
| 1177 | { |
| 1178 | errno = EINVAL; |
| 1179 | return 0.0; |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | * Check that the conversion terminated on something sensible |
| 1184 | * |
| 1185 | * For example, { "pay" : 123AB } would parse as 123. |
| 1186 | */ |
| 1187 | if (*errPtr != '\0') |
| 1188 | { |
| 1189 | errno = EINVAL; |
| 1190 | return 0.0; |
| 1191 | } |
| 1192 | |
| 1193 | /* |
| 1194 | * If strtod encounters a string which would exceed the |
| 1195 | * capacity of a double, it returns +/- HUGE_VAL and sets |
| 1196 | * errno to ERANGE. But +/- HUGE_VAL is also a valid result |
| 1197 | * from a conversion, so we need to check errno. |
| 1198 | * |
| 1199 | * Underflow also sets errno to ERANGE, but it returns 0 in |
| 1200 | * that case, which is what we will return anyway. |
| 1201 | * |
| 1202 | * See CERT guideline ERR30-C |
| 1203 | */ |
| 1204 | if ((HUGE_VAL == cdouble || -HUGE_VAL == cdouble) && (ERANGE == errno)) |
| 1205 | cdouble = 0.0; |
| 1206 | return cdouble; |
| 1207 | default: errno = EINVAL; return 0.0; |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | int json_object_set_double(struct json_object *jso, double new_value) |
| 1212 | { |
| 1213 | if (!jso || jso->o_type != json_type_double) |
| 1214 | return 0; |
| 1215 | JC_DOUBLE(jso)->c_double = new_value; |
| 1216 | if (jso->_to_json_string == &_json_object_userdata_to_json_string) |
| 1217 | json_object_set_serializer(jso, NULL, NULL, NULL); |
| 1218 | return 1; |
| 1219 | } |
| 1220 | |
| 1221 | /* json_object_string */ |
| 1222 | |
| 1223 | static int json_object_string_to_json_string(struct json_object *jso, struct printbuf *pb, |
| 1224 | int level, int flags) |
| 1225 | { |
| 1226 | ssize_t len = JC_STRING(jso)->len; |
| 1227 | printbuf_strappend(pb, "\""); |
| 1228 | json_escape_str(pb, get_string_component(jso), len < 0 ? -(ssize_t)len : len, flags); |
| 1229 | printbuf_strappend(pb, "\""); |
| 1230 | return 0; |
| 1231 | } |
| 1232 | |
| 1233 | static void json_object_string_delete(struct json_object *jso) |
| 1234 | { |
| 1235 | if (JC_STRING(jso)->len < 0) |
| 1236 | free(JC_STRING(jso)->c_string.pdata); |
| 1237 | json_object_generic_delete(jso); |
| 1238 | } |
| 1239 | |
| 1240 | static struct json_object *_json_object_new_string(const char *s, const size_t len) |
| 1241 | { |
| 1242 | size_t objsize; |
| 1243 | struct json_object_string *jso; |
| 1244 | |
| 1245 | /* |
| 1246 | * Structures Actual memory layout |
| 1247 | * ------------------- -------------------- |
| 1248 | * [json_object_string [json_object_string |
| 1249 | * [json_object] [json_object] |
| 1250 | * ...other fields... ...other fields... |
| 1251 | * c_string] len |
| 1252 | * bytes |
| 1253 | * of |
| 1254 | * string |
| 1255 | * data |
| 1256 | * \0] |
| 1257 | */ |
| 1258 | if (len > (SSIZE_T_MAX - (sizeof(*jso) - sizeof(jso->c_string)) - 1)) |
| 1259 | return NULL; |
| 1260 | objsize = (sizeof(*jso) - sizeof(jso->c_string)) + len + 1; |
| 1261 | if (len < sizeof(void *)) |
| 1262 | // We need a minimum size to support json_object_set_string() mutability |
| 1263 | // so we can stuff a pointer into pdata :( |
| 1264 | objsize += sizeof(void *) - len; |
| 1265 | |
| 1266 | jso = (struct json_object_string *)json_object_new(json_type_string, objsize, |
| 1267 | &json_object_string_to_json_string); |
| 1268 | |
| 1269 | if (!jso) |
| 1270 | return NULL; |
| 1271 | jso->len = len; |
| 1272 | memcpy(jso->c_string.idata, s, len); |
| 1273 | // Cast below needed for Clang UB sanitizer |
| 1274 | ((char *)jso->c_string.idata)[len] = '\0'; |
| 1275 | return &jso->base; |
| 1276 | } |
| 1277 | |
| 1278 | struct json_object *json_object_new_string(const char *s) |
| 1279 | { |
| 1280 | return _json_object_new_string(s, strlen(s)); |
| 1281 | } |
| 1282 | |
| 1283 | struct json_object *json_object_new_string_len(const char *s, const int len) |
| 1284 | { |
| 1285 | return _json_object_new_string(s, len); |
| 1286 | } |
| 1287 | |
| 1288 | const char *json_object_get_string(struct json_object *jso) |
| 1289 | { |
| 1290 | if (!jso) |
| 1291 | return NULL; |
| 1292 | switch (jso->o_type) |
| 1293 | { |
| 1294 | case json_type_string: return get_string_component(jso); |
| 1295 | default: return json_object_to_json_string(jso); |
| 1296 | } |
| 1297 | } |
| 1298 | |
| 1299 | static inline ssize_t _json_object_get_string_len(const struct json_object_string *jso) |
| 1300 | { |
| 1301 | ssize_t len; |
| 1302 | len = jso->len; |
| 1303 | return (len < 0) ? -(ssize_t)len : len; |
| 1304 | } |
| 1305 | int json_object_get_string_len(const struct json_object *jso) |
| 1306 | { |
| 1307 | if (!jso) |
| 1308 | return 0; |
| 1309 | switch (jso->o_type) |
| 1310 | { |
| 1311 | case json_type_string: return _json_object_get_string_len(JC_STRING_C(jso)); |
| 1312 | default: return 0; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | static int _json_object_set_string_len(json_object *jso, const char *s, size_t len) |
| 1317 | { |
| 1318 | char *dstbuf; |
| 1319 | ssize_t curlen; |
| 1320 | ssize_t newlen; |
| 1321 | if (jso == NULL || jso->o_type != json_type_string) |
| 1322 | return 0; |
| 1323 | |
| 1324 | if (len >= INT_MAX - 1) |
| 1325 | // jso->len is a signed ssize_t, so it can't hold the |
| 1326 | // full size_t range. json_object_get_string_len returns |
| 1327 | // length as int, cap length at INT_MAX. |
| 1328 | return 0; |
| 1329 | |
| 1330 | curlen = JC_STRING(jso)->len; |
| 1331 | if (curlen < 0) { |
| 1332 | if (len == 0) { |
| 1333 | free(JC_STRING(jso)->c_string.pdata); |
| 1334 | JC_STRING(jso)->len = curlen = 0; |
| 1335 | } else { |
| 1336 | curlen = -curlen; |
| 1337 | } |
| 1338 | } |
| 1339 | |
| 1340 | newlen = len; |
| 1341 | dstbuf = get_string_component_mutable(jso); |
| 1342 | |
| 1343 | if ((ssize_t)len > curlen) |
| 1344 | { |
| 1345 | // We have no way to return the new ptr from realloc(jso, newlen) |
| 1346 | // and we have no way of knowing whether there's extra room available |
| 1347 | // so we need to stuff a pointer in to pdata :( |
| 1348 | dstbuf = (char *)malloc(len + 1); |
| 1349 | if (dstbuf == NULL) |
| 1350 | return 0; |
| 1351 | if (JC_STRING(jso)->len < 0) |
| 1352 | free(JC_STRING(jso)->c_string.pdata); |
| 1353 | JC_STRING(jso)->c_string.pdata = dstbuf; |
| 1354 | newlen = -(ssize_t)len; |
| 1355 | } |
| 1356 | else if (JC_STRING(jso)->len < 0) |
| 1357 | { |
| 1358 | // We've got enough room in the separate allocated buffer, |
| 1359 | // so use it as-is and continue to indicate that pdata is used. |
| 1360 | newlen = -(ssize_t)len; |
| 1361 | } |
| 1362 | |
| 1363 | memcpy(dstbuf, (const void *)s, len); |
| 1364 | dstbuf[len] = '\0'; |
| 1365 | JC_STRING(jso)->len = newlen; |
| 1366 | return 1; |
| 1367 | } |
| 1368 | |
| 1369 | int json_object_set_string(json_object *jso, const char *s) |
| 1370 | { |
| 1371 | return _json_object_set_string_len(jso, s, strlen(s)); |
| 1372 | } |
| 1373 | |
| 1374 | int json_object_set_string_len(json_object *jso, const char *s, int len) |
| 1375 | { |
| 1376 | return _json_object_set_string_len(jso, s, len); |
| 1377 | } |
| 1378 | |
| 1379 | /* json_object_array */ |
| 1380 | |
| 1381 | static int json_object_array_to_json_string(struct json_object *jso, struct printbuf *pb, int level, |
| 1382 | int flags) |
| 1383 | { |
| 1384 | int had_children = 0; |
| 1385 | size_t ii; |
| 1386 | |
| 1387 | printbuf_strappend(pb, "["); |
| 1388 | for (ii = 0; ii < json_object_array_length(jso); ii++) |
| 1389 | { |
| 1390 | struct json_object *val; |
| 1391 | if (had_children) |
| 1392 | { |
| 1393 | printbuf_strappend(pb, ","); |
| 1394 | } |
| 1395 | if (flags & JSON_C_TO_STRING_PRETTY) |
| 1396 | printbuf_strappend(pb, "\n"); |
| 1397 | had_children = 1; |
| 1398 | if (flags & JSON_C_TO_STRING_SPACED && !(flags & JSON_C_TO_STRING_PRETTY)) |
| 1399 | printbuf_strappend(pb, " "); |
| 1400 | indent(pb, level + 1, flags); |
| 1401 | val = json_object_array_get_idx(jso, ii); |
| 1402 | if (val == NULL) |
| 1403 | printbuf_strappend(pb, "null"); |
| 1404 | else if (val->_to_json_string(val, pb, level + 1, flags) < 0) |
| 1405 | return -1; |
| 1406 | } |
| 1407 | if ((flags & JSON_C_TO_STRING_PRETTY) && had_children) |
| 1408 | { |
| 1409 | printbuf_strappend(pb, "\n"); |
| 1410 | indent(pb, level, flags); |
| 1411 | } |
| 1412 | |
| 1413 | if (flags & JSON_C_TO_STRING_SPACED && !(flags & JSON_C_TO_STRING_PRETTY)) |
| 1414 | return printbuf_strappend(pb, " ]"); |
| 1415 | return printbuf_strappend(pb, "]"); |
| 1416 | } |
| 1417 | |
| 1418 | static void json_object_array_entry_free(void *data) |
| 1419 | { |
| 1420 | json_object_put((struct json_object *)data); |
| 1421 | } |
| 1422 | |
| 1423 | static void json_object_array_delete(struct json_object *jso) |
| 1424 | { |
| 1425 | array_list_free(JC_ARRAY(jso)->c_array); |
| 1426 | json_object_generic_delete(jso); |
| 1427 | } |
| 1428 | |
| 1429 | struct json_object *json_object_new_array(void) |
| 1430 | { |
| 1431 | return json_object_new_array_ext(ARRAY_LIST_DEFAULT_SIZE); |
| 1432 | } |
| 1433 | struct json_object *json_object_new_array_ext(int initial_size) |
| 1434 | { |
| 1435 | struct json_object_array *jso = JSON_OBJECT_NEW(array); |
| 1436 | if (!jso) |
| 1437 | return NULL; |
| 1438 | jso->c_array = array_list_new2(&json_object_array_entry_free, initial_size); |
| 1439 | if (jso->c_array == NULL) |
| 1440 | { |
| 1441 | free(jso); |
| 1442 | return NULL; |
| 1443 | } |
| 1444 | return &jso->base; |
| 1445 | } |
| 1446 | |
| 1447 | struct array_list *json_object_get_array(const struct json_object *jso) |
| 1448 | { |
| 1449 | if (!jso) |
| 1450 | return NULL; |
| 1451 | switch (jso->o_type) |
| 1452 | { |
| 1453 | case json_type_array: return JC_ARRAY_C(jso)->c_array; |
| 1454 | default: return NULL; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | void json_object_array_sort(struct json_object *jso, int (*sort_fn)(const void *, const void *)) |
| 1459 | { |
| 1460 | assert(json_object_get_type(jso) == json_type_array); |
| 1461 | array_list_sort(JC_ARRAY(jso)->c_array, sort_fn); |
| 1462 | } |
| 1463 | |
| 1464 | struct json_object *json_object_array_bsearch(const struct json_object *key, |
| 1465 | const struct json_object *jso, |
| 1466 | int (*sort_fn)(const void *, const void *)) |
| 1467 | { |
| 1468 | struct json_object **result; |
| 1469 | |
| 1470 | assert(json_object_get_type(jso) == json_type_array); |
| 1471 | result = (struct json_object **)array_list_bsearch((const void **)(void *)&key, |
| 1472 | JC_ARRAY_C(jso)->c_array, sort_fn); |
| 1473 | |
| 1474 | if (!result) |
| 1475 | return NULL; |
| 1476 | return *result; |
| 1477 | } |
| 1478 | |
| 1479 | size_t json_object_array_length(const struct json_object *jso) |
| 1480 | { |
| 1481 | assert(json_object_get_type(jso) == json_type_array); |
| 1482 | return array_list_length(JC_ARRAY_C(jso)->c_array); |
| 1483 | } |
| 1484 | |
| 1485 | int json_object_array_add(struct json_object *jso, struct json_object *val) |
| 1486 | { |
| 1487 | assert(json_object_get_type(jso) == json_type_array); |
| 1488 | return array_list_add(JC_ARRAY(jso)->c_array, val); |
| 1489 | } |
| 1490 | |
| 1491 | int json_object_array_put_idx(struct json_object *jso, size_t idx, struct json_object *val) |
| 1492 | { |
| 1493 | assert(json_object_get_type(jso) == json_type_array); |
| 1494 | return array_list_put_idx(JC_ARRAY(jso)->c_array, idx, val); |
| 1495 | } |
| 1496 | |
| 1497 | int json_object_array_del_idx(struct json_object *jso, size_t idx, size_t count) |
| 1498 | { |
| 1499 | assert(json_object_get_type(jso) == json_type_array); |
| 1500 | return array_list_del_idx(JC_ARRAY(jso)->c_array, idx, count); |
| 1501 | } |
| 1502 | |
| 1503 | struct json_object *json_object_array_get_idx(const struct json_object *jso, size_t idx) |
| 1504 | { |
| 1505 | assert(json_object_get_type(jso) == json_type_array); |
| 1506 | return (struct json_object *)array_list_get_idx(JC_ARRAY_C(jso)->c_array, idx); |
| 1507 | } |
| 1508 | |
| 1509 | static int json_array_equal(struct json_object *jso1, struct json_object *jso2) |
| 1510 | { |
| 1511 | size_t len, i; |
| 1512 | |
| 1513 | len = json_object_array_length(jso1); |
| 1514 | if (len != json_object_array_length(jso2)) |
| 1515 | return 0; |
| 1516 | |
| 1517 | for (i = 0; i < len; i++) |
| 1518 | { |
| 1519 | if (!json_object_equal(json_object_array_get_idx(jso1, i), |
| 1520 | json_object_array_get_idx(jso2, i))) |
| 1521 | return 0; |
| 1522 | } |
| 1523 | return 1; |
| 1524 | } |
| 1525 | |
| 1526 | int json_object_array_shrink(struct json_object *jso, int empty_slots) |
| 1527 | { |
| 1528 | if (empty_slots < 0) |
| 1529 | json_abort("json_object_array_shrink called with negative empty_slots"); |
| 1530 | return array_list_shrink(JC_ARRAY(jso)->c_array, empty_slots); |
| 1531 | } |
| 1532 | |
| 1533 | struct json_object *json_object_new_null(void) |
| 1534 | { |
| 1535 | return NULL; |
| 1536 | } |
| 1537 | |
| 1538 | static int json_object_all_values_equal(struct json_object *jso1, struct json_object *jso2) |
| 1539 | { |
| 1540 | struct json_object_iter iter; |
| 1541 | struct json_object *sub; |
| 1542 | |
| 1543 | assert(json_object_get_type(jso1) == json_type_object); |
| 1544 | assert(json_object_get_type(jso2) == json_type_object); |
| 1545 | /* Iterate over jso1 keys and see if they exist and are equal in jso2 */ |
| 1546 | json_object_object_foreachC(jso1, iter) |
| 1547 | { |
| 1548 | if (!lh_table_lookup_ex(JC_OBJECT(jso2)->c_object, (void *)iter.key, |
| 1549 | (void **)(void *)&sub)) |
| 1550 | return 0; |
| 1551 | if (!json_object_equal(iter.val, sub)) |
| 1552 | return 0; |
| 1553 | } |
| 1554 | |
| 1555 | /* Iterate over jso2 keys to see if any exist that are not in jso1 */ |
| 1556 | json_object_object_foreachC(jso2, iter) |
| 1557 | { |
| 1558 | if (!lh_table_lookup_ex(JC_OBJECT(jso1)->c_object, (void *)iter.key, |
| 1559 | (void **)(void *)&sub)) |
| 1560 | return 0; |
| 1561 | } |
| 1562 | |
| 1563 | return 1; |
| 1564 | } |
| 1565 | |
| 1566 | int json_object_equal(struct json_object *jso1, struct json_object *jso2) |
| 1567 | { |
| 1568 | if (jso1 == jso2) |
| 1569 | return 1; |
| 1570 | |
| 1571 | if (!jso1 || !jso2) |
| 1572 | return 0; |
| 1573 | |
| 1574 | if (jso1->o_type != jso2->o_type) |
| 1575 | return 0; |
| 1576 | |
| 1577 | switch (jso1->o_type) |
| 1578 | { |
| 1579 | case json_type_boolean: return (JC_BOOL(jso1)->c_boolean == JC_BOOL(jso2)->c_boolean); |
| 1580 | |
| 1581 | case json_type_double: return (JC_DOUBLE(jso1)->c_double == JC_DOUBLE(jso2)->c_double); |
| 1582 | |
| 1583 | case json_type_int: |
| 1584 | { |
| 1585 | struct json_object_int *int1 = JC_INT(jso1); |
| 1586 | struct json_object_int *int2 = JC_INT(jso2); |
| 1587 | if (int1->cint_type == json_object_int_type_int64) |
| 1588 | { |
| 1589 | if (int2->cint_type == json_object_int_type_int64) |
| 1590 | return (int1->cint.c_int64 == int2->cint.c_int64); |
| 1591 | if (int1->cint.c_int64 < 0) |
| 1592 | return 0; |
| 1593 | return ((uint64_t)int1->cint.c_int64 == int2->cint.c_uint64); |
| 1594 | } |
| 1595 | // else jso1 is a uint64 |
| 1596 | if (int2->cint_type == json_object_int_type_uint64) |
| 1597 | return (int1->cint.c_uint64 == int2->cint.c_uint64); |
| 1598 | if (int2->cint.c_int64 < 0) |
| 1599 | return 0; |
| 1600 | return (int1->cint.c_uint64 == (uint64_t)int2->cint.c_int64); |
| 1601 | } |
| 1602 | |
| 1603 | case json_type_string: |
| 1604 | { |
| 1605 | return (_json_object_get_string_len(JC_STRING(jso1)) == |
| 1606 | _json_object_get_string_len(JC_STRING(jso2)) && |
| 1607 | memcmp(get_string_component(jso1), get_string_component(jso2), |
| 1608 | _json_object_get_string_len(JC_STRING(jso1))) == 0); |
| 1609 | } |
| 1610 | |
| 1611 | case json_type_object: return json_object_all_values_equal(jso1, jso2); |
| 1612 | |
| 1613 | case json_type_array: return json_array_equal(jso1, jso2); |
| 1614 | |
| 1615 | case json_type_null: return 1; |
| 1616 | }; |
| 1617 | |
| 1618 | return 0; |
| 1619 | } |
| 1620 | |
| 1621 | static int json_object_copy_serializer_data(struct json_object *src, struct json_object *dst) |
| 1622 | { |
| 1623 | if (!src->_userdata && !src->_user_delete) |
| 1624 | return 0; |
| 1625 | |
| 1626 | if (dst->_to_json_string == json_object_userdata_to_json_string || |
| 1627 | dst->_to_json_string == _json_object_userdata_to_json_string) |
| 1628 | { |
| 1629 | char *p; |
| 1630 | assert(src->_userdata); |
| 1631 | p = strdup(src->_userdata); |
| 1632 | if (p == NULL) |
| 1633 | { |
| 1634 | _json_c_set_last_err("json_object_copy_serializer_data: out of memory\n"); |
| 1635 | return -1; |
| 1636 | } |
| 1637 | dst->_userdata = p; |
| 1638 | } |
| 1639 | // else if ... other supported serializers ... |
| 1640 | else |
| 1641 | { |
| 1642 | _json_c_set_last_err( |
| 1643 | "json_object_copy_serializer_data: unable to copy unknown serializer data: " |
| 1644 | "%p\n", (void *)dst->_to_json_string); |
| 1645 | return -1; |
| 1646 | } |
| 1647 | dst->_user_delete = src->_user_delete; |
| 1648 | return 0; |
| 1649 | } |
| 1650 | |
| 1651 | /** |
| 1652 | * The default shallow copy implementation. Simply creates a new object of the same |
| 1653 | * type but does *not* copy over _userdata nor retain any custom serializer. |
| 1654 | * If custom serializers are in use, json_object_deep_copy() must be passed a shallow copy |
| 1655 | * implementation that is aware of how to copy them. |
| 1656 | * |
| 1657 | * This always returns -1 or 1. It will never return 2 since it does not copy the serializer. |
| 1658 | */ |
| 1659 | int json_c_shallow_copy_default(json_object *src, json_object *parent, const char *key, |
| 1660 | size_t index, json_object **dst) |
| 1661 | { |
| 1662 | switch (src->o_type) |
| 1663 | { |
| 1664 | case json_type_boolean: *dst = json_object_new_boolean(JC_BOOL(src)->c_boolean); break; |
| 1665 | |
| 1666 | case json_type_double: *dst = json_object_new_double(JC_DOUBLE(src)->c_double); break; |
| 1667 | |
| 1668 | case json_type_int: |
| 1669 | switch (JC_INT(src)->cint_type) |
| 1670 | { |
| 1671 | case json_object_int_type_int64: |
| 1672 | *dst = json_object_new_int64(JC_INT(src)->cint.c_int64); |
| 1673 | break; |
| 1674 | case json_object_int_type_uint64: |
| 1675 | *dst = json_object_new_uint64(JC_INT(src)->cint.c_uint64); |
| 1676 | break; |
| 1677 | default: json_abort("invalid cint_type"); |
| 1678 | } |
| 1679 | break; |
| 1680 | |
| 1681 | case json_type_string: |
| 1682 | *dst = json_object_new_string_len(get_string_component(src), |
| 1683 | _json_object_get_string_len(JC_STRING(src))); |
| 1684 | break; |
| 1685 | |
| 1686 | case json_type_object: *dst = json_object_new_object(); break; |
| 1687 | |
| 1688 | case json_type_array: *dst = json_object_new_array(); break; |
| 1689 | |
| 1690 | default: errno = EINVAL; return -1; |
| 1691 | } |
| 1692 | |
| 1693 | if (!*dst) |
| 1694 | { |
| 1695 | errno = ENOMEM; |
| 1696 | return -1; |
| 1697 | } |
| 1698 | (*dst)->_to_json_string = src->_to_json_string; |
| 1699 | // _userdata and _user_delete are copied later |
| 1700 | return 1; |
| 1701 | } |
| 1702 | |
| 1703 | /* |
| 1704 | * The actual guts of json_object_deep_copy(), with a few additional args |
| 1705 | * needed so we can keep track of where we are within the object tree. |
| 1706 | * |
| 1707 | * Note: caller is responsible for freeing *dst if this fails and returns -1. |
| 1708 | */ |
| 1709 | static int json_object_deep_copy_recursive(struct json_object *src, struct json_object *parent, |
| 1710 | const char *key_in_parent, size_t index_in_parent, |
| 1711 | struct json_object **dst, |
| 1712 | json_c_shallow_copy_fn *shallow_copy) |
| 1713 | { |
| 1714 | struct json_object_iter iter; |
| 1715 | size_t src_array_len, ii; |
| 1716 | |
| 1717 | int shallow_copy_rc = 0; |
| 1718 | shallow_copy_rc = shallow_copy(src, parent, key_in_parent, index_in_parent, dst); |
| 1719 | /* -1=error, 1=object created ok, 2=userdata set */ |
| 1720 | if (shallow_copy_rc < 1) |
| 1721 | { |
| 1722 | errno = EINVAL; |
| 1723 | return -1; |
| 1724 | } |
| 1725 | assert(*dst != NULL); |
| 1726 | |
| 1727 | switch (src->o_type) |
| 1728 | { |
| 1729 | case json_type_object: |
| 1730 | json_object_object_foreachC(src, iter) |
| 1731 | { |
| 1732 | struct json_object *jso = NULL; |
| 1733 | /* This handles the `json_type_null` case */ |
| 1734 | if (!iter.val) |
| 1735 | jso = NULL; |
| 1736 | else if (json_object_deep_copy_recursive(iter.val, src, iter.key, UINT_MAX, |
| 1737 | &jso, shallow_copy) < 0) |
| 1738 | { |
| 1739 | json_object_put(jso); |
| 1740 | return -1; |
| 1741 | } |
| 1742 | |
| 1743 | if (json_object_object_add(*dst, iter.key, jso) < 0) |
| 1744 | { |
| 1745 | json_object_put(jso); |
| 1746 | return -1; |
| 1747 | } |
| 1748 | } |
| 1749 | break; |
| 1750 | |
| 1751 | case json_type_array: |
| 1752 | src_array_len = json_object_array_length(src); |
| 1753 | for (ii = 0; ii < src_array_len; ii++) |
| 1754 | { |
| 1755 | struct json_object *jso = NULL; |
| 1756 | struct json_object *jso1 = json_object_array_get_idx(src, ii); |
| 1757 | /* This handles the `json_type_null` case */ |
| 1758 | if (!jso1) |
| 1759 | jso = NULL; |
| 1760 | else if (json_object_deep_copy_recursive(jso1, src, NULL, ii, &jso, |
| 1761 | shallow_copy) < 0) |
| 1762 | { |
| 1763 | json_object_put(jso); |
| 1764 | return -1; |
| 1765 | } |
| 1766 | |
| 1767 | if (json_object_array_add(*dst, jso) < 0) |
| 1768 | { |
| 1769 | json_object_put(jso); |
| 1770 | return -1; |
| 1771 | } |
| 1772 | } |
| 1773 | break; |
| 1774 | |
| 1775 | default: |
| 1776 | break; |
| 1777 | /* else, nothing to do, shallow_copy already did. */ |
| 1778 | } |
| 1779 | |
| 1780 | if (shallow_copy_rc != 2) |
| 1781 | return json_object_copy_serializer_data(src, *dst); |
| 1782 | |
| 1783 | return 0; |
| 1784 | } |
| 1785 | |
| 1786 | int json_object_deep_copy(struct json_object *src, struct json_object **dst, |
| 1787 | json_c_shallow_copy_fn *shallow_copy) |
| 1788 | { |
| 1789 | int rc; |
| 1790 | |
| 1791 | /* Check if arguments are sane ; *dst must not point to a non-NULL object */ |
| 1792 | if (!src || !dst || *dst) |
| 1793 | { |
| 1794 | errno = EINVAL; |
| 1795 | return -1; |
| 1796 | } |
| 1797 | |
| 1798 | if (shallow_copy == NULL) |
| 1799 | shallow_copy = json_c_shallow_copy_default; |
| 1800 | |
| 1801 | rc = json_object_deep_copy_recursive(src, NULL, NULL, UINT_MAX, dst, shallow_copy); |
| 1802 | if (rc < 0) |
| 1803 | { |
| 1804 | json_object_put(*dst); |
| 1805 | *dst = NULL; |
| 1806 | } |
| 1807 | |
| 1808 | return rc; |
| 1809 | } |
| 1810 | |
| 1811 | static void json_abort(const char *message) |
| 1812 | { |
| 1813 | if (message != NULL) |
| 1814 | fprintf(stderr, "json-c aborts with error: %s\n", message); |
| 1815 | abort(); |
| 1816 | } |