| 1 | /* |
| 2 | * MessagePack unpacking routine template |
| 3 | * |
| 4 | * Copyright (C) 2008-2010 FURUHASHI Sadayuki |
| 5 | * |
| 6 | * Distributed under the Boost Software License, Version 1.0. |
| 7 | * (See accompanying file LICENSE_1_0.txt or copy at |
| 8 | * http://www.boost.org/LICENSE_1_0.txt) |
| 9 | */ |
| 10 | |
| 11 | #ifndef msgpack_unpack_func |
| 12 | #error msgpack_unpack_func template is not defined |
| 13 | #endif |
| 14 | |
| 15 | #ifndef msgpack_unpack_callback |
| 16 | #error msgpack_unpack_callback template is not defined |
| 17 | #endif |
| 18 | |
| 19 | #ifndef msgpack_unpack_struct |
| 20 | #error msgpack_unpack_struct template is not defined |
| 21 | #endif |
| 22 | |
| 23 | #ifndef msgpack_unpack_struct_decl |
| 24 | #define msgpack_unpack_struct_decl(name) msgpack_unpack_struct(name) |
| 25 | #endif |
| 26 | |
| 27 | #ifndef msgpack_unpack_object |
| 28 | #error msgpack_unpack_object type is not defined |
| 29 | #endif |
| 30 | |
| 31 | #ifndef msgpack_unpack_user |
| 32 | #error msgpack_unpack_user type is not defined |
| 33 | #endif |
| 34 | |
| 35 | #ifndef USE_CASE_RANGE |
| 36 | #if !defined(_MSC_VER) |
| 37 | #define USE_CASE_RANGE |
| 38 | #endif |
| 39 | #endif |
| 40 | |
| 41 | #if defined(_KERNEL_MODE) |
| 42 | #undef assert |
| 43 | #define assert NT_ASSERT |
| 44 | #endif |
| 45 | |
| 46 | msgpack_unpack_struct_decl(_stack) { |
| 47 | msgpack_unpack_object obj; |
| 48 | size_t count; |
| 49 | unsigned int ct; |
| 50 | msgpack_unpack_object map_key; |
| 51 | }; |
| 52 | |
| 53 | msgpack_unpack_struct_decl(_context) { |
| 54 | msgpack_unpack_user user; |
| 55 | unsigned int cs; |
| 56 | unsigned int trail; |
| 57 | unsigned int top; |
| 58 | /* |
| 59 | msgpack_unpack_struct(_stack)* stack; |
| 60 | unsigned int stack_size; |
| 61 | msgpack_unpack_struct(_stack) embed_stack[MSGPACK_EMBED_STACK_SIZE]; |
| 62 | */ |
| 63 | msgpack_unpack_struct(_stack) stack[MSGPACK_EMBED_STACK_SIZE]; |
| 64 | }; |
| 65 | |
| 66 | |
| 67 | msgpack_unpack_func(void, _init)(msgpack_unpack_struct(_context)* ctx) |
| 68 | { |
| 69 | ctx->cs = MSGPACK_CS_HEADER; |
| 70 | ctx->trail = 0; |
| 71 | ctx->top = 0; |
| 72 | /* |
| 73 | ctx->stack = ctx->embed_stack; |
| 74 | ctx->stack_size = MSGPACK_EMBED_STACK_SIZE; |
| 75 | */ |
| 76 | ctx->stack[0].obj = msgpack_unpack_callback(_root)(&ctx->user); |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | msgpack_unpack_func(void, _destroy)(msgpack_unpack_struct(_context)* ctx) |
| 81 | { |
| 82 | if(ctx->stack_size != MSGPACK_EMBED_STACK_SIZE) { |
| 83 | free(ctx->stack); |
| 84 | } |
| 85 | } |
| 86 | */ |
| 87 | |
| 88 | msgpack_unpack_func(msgpack_unpack_object, _data)(msgpack_unpack_struct(_context)* ctx) |
| 89 | { |
| 90 | return (ctx)->stack[0].obj; |
| 91 | } |
| 92 | |
| 93 | |
| 94 | msgpack_unpack_func(int, _execute)(msgpack_unpack_struct(_context)* ctx, const char* data, size_t len, size_t* off) |
| 95 | { |
| 96 | assert(len >= *off); |
| 97 | { |
| 98 | const unsigned char* p = (unsigned char*)data + *off; |
| 99 | const unsigned char* const pe = (unsigned char*)data + len; |
| 100 | const void* n = NULL; |
| 101 | |
| 102 | unsigned int trail = ctx->trail; |
| 103 | unsigned int cs = ctx->cs; |
| 104 | unsigned int top = ctx->top; |
| 105 | msgpack_unpack_struct(_stack)* stack = ctx->stack; |
| 106 | /* |
| 107 | unsigned int stack_size = ctx->stack_size; |
| 108 | */ |
| 109 | msgpack_unpack_user* user = &ctx->user; |
| 110 | |
| 111 | msgpack_unpack_object obj; |
| 112 | msgpack_unpack_struct(_stack)* c = NULL; |
| 113 | |
| 114 | int ret; |
| 115 | |
| 116 | #define push_simple_value(func) \ |
| 117 | ret = msgpack_unpack_callback(func)(user, &obj); \ |
| 118 | if(ret < 0) { goto _failed; } \ |
| 119 | goto _push |
| 120 | #define push_fixed_value(func, arg) \ |
| 121 | ret = msgpack_unpack_callback(func)(user, arg, &obj); \ |
| 122 | if(ret < 0) { goto _failed; } \ |
| 123 | goto _push |
| 124 | #define push_variable_value(func, base, pos, len) \ |
| 125 | ret = msgpack_unpack_callback(func)(user, \ |
| 126 | (const char*)base, (const char*)pos, len, &obj); \ |
| 127 | if(ret < 0) { goto _failed; } \ |
| 128 | goto _push |
| 129 | |
| 130 | #define again_fixed_trail(_cs, trail_len) \ |
| 131 | trail = trail_len; \ |
| 132 | cs = _cs; \ |
| 133 | goto _fixed_trail_again |
| 134 | #define again_fixed_trail_if_zero(_cs, trail_len, ifzero) \ |
| 135 | trail = trail_len; \ |
| 136 | if(trail == 0) { goto ifzero; } \ |
| 137 | cs = _cs; \ |
| 138 | goto _fixed_trail_again |
| 139 | |
| 140 | #define start_container(func, count_, ct_) \ |
| 141 | if(top >= MSGPACK_EMBED_STACK_SIZE) { \ |
| 142 | ret = MSGPACK_UNPACK_NOMEM_ERROR; \ |
| 143 | goto _failed; \ |
| 144 | } /* FIXME */ \ |
| 145 | ret = msgpack_unpack_callback(func)(user, count_, &stack[top].obj); \ |
| 146 | if(ret < 0) { goto _failed; } \ |
| 147 | if((count_) == 0) { obj = stack[top].obj; goto _push; } \ |
| 148 | stack[top].ct = ct_; \ |
| 149 | stack[top].count = count_; \ |
| 150 | ++top; \ |
| 151 | goto _header_again |
| 152 | |
| 153 | #define NEXT_CS(p) \ |
| 154 | ((unsigned int)*p & 0x1f) |
| 155 | |
| 156 | #ifdef USE_CASE_RANGE |
| 157 | #define SWITCH_RANGE_BEGIN switch(*p) { |
| 158 | #define SWITCH_RANGE(FROM, TO) case FROM ... TO: |
| 159 | #define SWITCH_RANGE_DEFAULT default: |
| 160 | #define SWITCH_RANGE_END } |
| 161 | #else |
| 162 | #define SWITCH_RANGE_BEGIN { if(0) { |
| 163 | #define SWITCH_RANGE(FROM, TO) } else if(FROM <= *p && *p <= TO) { |
| 164 | #define SWITCH_RANGE_DEFAULT } else { |
| 165 | #define SWITCH_RANGE_END } } |
| 166 | #endif |
| 167 | |
| 168 | if(p == pe) { goto _out; } |
| 169 | do { |
| 170 | switch(cs) { |
| 171 | case MSGPACK_CS_HEADER: |
| 172 | SWITCH_RANGE_BEGIN |
| 173 | SWITCH_RANGE(0x00, 0x7f) // Positive Fixnum |
| 174 | push_fixed_value(_uint8, *(uint8_t*)p); |
| 175 | SWITCH_RANGE(0xe0, 0xff) // Negative Fixnum |
| 176 | push_fixed_value(_int8, *(int8_t*)p); |
| 177 | SWITCH_RANGE(0xc0, 0xdf) // Variable |
| 178 | switch(*p) { |
| 179 | case 0xc0: // nil |
| 180 | push_simple_value(_nil); |
| 181 | //case 0xc1: // string |
| 182 | // again_terminal_trail(NEXT_CS(p), p+1); |
| 183 | case 0xc2: // false |
| 184 | push_simple_value(_false); |
| 185 | case 0xc3: // true |
| 186 | push_simple_value(_true); |
| 187 | case 0xc4: // bin 8 |
| 188 | case 0xc5: // bin 16 |
| 189 | case 0xc6: // bin 32 |
| 190 | again_fixed_trail(NEXT_CS(p), 1 << (((unsigned int)*p) & 0x03)); |
| 191 | case 0xc7: // ext 8 |
| 192 | case 0xc8: // ext 16 |
| 193 | case 0xc9: // ext 32 |
| 194 | again_fixed_trail(NEXT_CS(p), 1 << ((((unsigned int)*p) + 1) & 0x03)); |
| 195 | case 0xca: // float |
| 196 | case 0xcb: // double |
| 197 | case 0xcc: // unsigned int 8 |
| 198 | case 0xcd: // unsigned int 16 |
| 199 | case 0xce: // unsigned int 32 |
| 200 | case 0xcf: // unsigned int 64 |
| 201 | case 0xd0: // signed int 8 |
| 202 | case 0xd1: // signed int 16 |
| 203 | case 0xd2: // signed int 32 |
| 204 | case 0xd3: // signed int 64 |
| 205 | again_fixed_trail(NEXT_CS(p), 1 << (((unsigned int)*p) & 0x03)); |
| 206 | case 0xd4: // fixext 1 |
| 207 | case 0xd5: // fixext 2 |
| 208 | case 0xd6: // fixext 4 |
| 209 | case 0xd7: // fixext 8 |
| 210 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, |
| 211 | (1 << (((unsigned int)*p) & 0x03)) + 1, _ext_zero); |
| 212 | case 0xd8: // fixext 16 |
| 213 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 16+1, _ext_zero); |
| 214 | |
| 215 | case 0xd9: // str 8 |
| 216 | case 0xda: // str 16 |
| 217 | case 0xdb: // str 32 |
| 218 | again_fixed_trail(NEXT_CS(p), 1 << ((((unsigned int)*p) & 0x03) - 1)); |
| 219 | case 0xdc: // array 16 |
| 220 | case 0xdd: // array 32 |
| 221 | case 0xde: // map 16 |
| 222 | case 0xdf: // map 32 |
| 223 | again_fixed_trail(NEXT_CS(p), 2u << (((unsigned int)*p) & 0x01)); |
| 224 | default: |
| 225 | ret = MSGPACK_UNPACK_PARSE_ERROR; |
| 226 | goto _failed; |
| 227 | } |
| 228 | SWITCH_RANGE(0xa0, 0xbf) // FixStr |
| 229 | again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, ((unsigned int)*p & 0x1f), _str_zero); |
| 230 | SWITCH_RANGE(0x90, 0x9f) // FixArray |
| 231 | start_container(_array, ((unsigned int)*p) & 0x0f, MSGPACK_CT_ARRAY_ITEM); |
| 232 | SWITCH_RANGE(0x80, 0x8f) // FixMap |
| 233 | start_container(_map, ((unsigned int)*p) & 0x0f, MSGPACK_CT_MAP_KEY); |
| 234 | |
| 235 | SWITCH_RANGE_DEFAULT |
| 236 | ret = MSGPACK_UNPACK_PARSE_ERROR; |
| 237 | goto _failed; |
| 238 | SWITCH_RANGE_END |
| 239 | // end MSGPACK_CS_HEADER |
| 240 | |
| 241 | |
| 242 | _fixed_trail_again: |
| 243 | ++p; |
| 244 | // fallthrough |
| 245 | |
| 246 | default: |
| 247 | if((size_t)(pe - p) < trail) { goto _out; } |
| 248 | n = p; p += trail - 1; |
| 249 | switch(cs) { |
| 250 | //case MSGPACK_CS_ |
| 251 | //case MSGPACK_CS_ |
| 252 | case MSGPACK_CS_FLOAT: { |
| 253 | union { uint32_t i; float f; } mem; |
| 254 | _msgpack_load32(uint32_t, n, &mem.i); |
| 255 | push_fixed_value(_float, mem.f); } |
| 256 | case MSGPACK_CS_DOUBLE: { |
| 257 | union { uint64_t i; double f; } mem; |
| 258 | _msgpack_load64(uint64_t, n, &mem.i); |
| 259 | #if defined(TARGET_OS_IPHONE) |
| 260 | // ok |
| 261 | #elif defined(__arm__) && !(__ARM_EABI__) // arm-oabi |
| 262 | // https://github.com/msgpack/msgpack-perl/pull/1 |
| 263 | mem.i = (mem.i & 0xFFFFFFFFUL) << 32UL | (mem.i >> 32UL); |
| 264 | #endif |
| 265 | push_fixed_value(_double, mem.f); } |
| 266 | case MSGPACK_CS_UINT_8: |
| 267 | push_fixed_value(_uint8, *(uint8_t*)n); |
| 268 | case MSGPACK_CS_UINT_16:{ |
| 269 | uint16_t tmp; |
| 270 | _msgpack_load16(uint16_t,n,&tmp); |
| 271 | push_fixed_value(_uint16, tmp); |
| 272 | } |
| 273 | case MSGPACK_CS_UINT_32:{ |
| 274 | uint32_t tmp; |
| 275 | _msgpack_load32(uint32_t,n,&tmp); |
| 276 | push_fixed_value(_uint32, tmp); |
| 277 | } |
| 278 | case MSGPACK_CS_UINT_64:{ |
| 279 | uint64_t tmp; |
| 280 | _msgpack_load64(uint64_t,n,&tmp); |
| 281 | push_fixed_value(_uint64, tmp); |
| 282 | } |
| 283 | case MSGPACK_CS_INT_8: |
| 284 | push_fixed_value(_int8, *(int8_t*)n); |
| 285 | case MSGPACK_CS_INT_16:{ |
| 286 | int16_t tmp; |
| 287 | _msgpack_load16(int16_t,n,&tmp); |
| 288 | push_fixed_value(_int16, tmp); |
| 289 | } |
| 290 | case MSGPACK_CS_INT_32:{ |
| 291 | int32_t tmp; |
| 292 | _msgpack_load32(int32_t,n,&tmp); |
| 293 | push_fixed_value(_int32, tmp); |
| 294 | } |
| 295 | case MSGPACK_CS_INT_64:{ |
| 296 | int64_t tmp; |
| 297 | _msgpack_load64(int64_t,n,&tmp); |
| 298 | push_fixed_value(_int64, tmp); |
| 299 | } |
| 300 | case MSGPACK_CS_FIXEXT_1: |
| 301 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 1+1, _ext_zero); |
| 302 | case MSGPACK_CS_FIXEXT_2: |
| 303 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 2+1, _ext_zero); |
| 304 | case MSGPACK_CS_FIXEXT_4: |
| 305 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 4+1, _ext_zero); |
| 306 | case MSGPACK_CS_FIXEXT_8: |
| 307 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 8+1, _ext_zero); |
| 308 | case MSGPACK_CS_FIXEXT_16: |
| 309 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, 16+1, _ext_zero); |
| 310 | case MSGPACK_CS_STR_8: |
| 311 | again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, *(uint8_t*)n, _str_zero); |
| 312 | case MSGPACK_CS_BIN_8: |
| 313 | again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, *(uint8_t*)n, _bin_zero); |
| 314 | case MSGPACK_CS_EXT_8: |
| 315 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, (*(uint8_t*)n) + 1, _ext_zero); |
| 316 | case MSGPACK_CS_STR_16:{ |
| 317 | uint16_t tmp; |
| 318 | _msgpack_load16(uint16_t,n,&tmp); |
| 319 | again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, tmp, _str_zero); |
| 320 | } |
| 321 | case MSGPACK_CS_BIN_16:{ |
| 322 | uint16_t tmp; |
| 323 | _msgpack_load16(uint16_t,n,&tmp); |
| 324 | again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, tmp, _bin_zero); |
| 325 | } |
| 326 | case MSGPACK_CS_EXT_16:{ |
| 327 | uint16_t tmp; |
| 328 | _msgpack_load16(uint16_t,n,&tmp); |
| 329 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, tmp + 1, _ext_zero); |
| 330 | } |
| 331 | case MSGPACK_CS_STR_32:{ |
| 332 | uint32_t tmp; |
| 333 | _msgpack_load32(uint32_t,n,&tmp); |
| 334 | again_fixed_trail_if_zero(MSGPACK_ACS_STR_VALUE, tmp, _str_zero); |
| 335 | } |
| 336 | case MSGPACK_CS_BIN_32:{ |
| 337 | uint32_t tmp; |
| 338 | _msgpack_load32(uint32_t,n,&tmp); |
| 339 | again_fixed_trail_if_zero(MSGPACK_ACS_BIN_VALUE, tmp, _bin_zero); |
| 340 | } |
| 341 | case MSGPACK_CS_EXT_32:{ |
| 342 | uint32_t tmp; |
| 343 | _msgpack_load32(uint32_t,n,&tmp); |
| 344 | again_fixed_trail_if_zero(MSGPACK_ACS_EXT_VALUE, tmp + 1, _ext_zero); |
| 345 | } |
| 346 | case MSGPACK_ACS_STR_VALUE: |
| 347 | _str_zero: |
| 348 | push_variable_value(_str, data, n, trail); |
| 349 | case MSGPACK_ACS_BIN_VALUE: |
| 350 | _bin_zero: |
| 351 | push_variable_value(_bin, data, n, trail); |
| 352 | case MSGPACK_ACS_EXT_VALUE: |
| 353 | _ext_zero: |
| 354 | push_variable_value(_ext, data, n, trail); |
| 355 | |
| 356 | case MSGPACK_CS_ARRAY_16:{ |
| 357 | uint16_t tmp; |
| 358 | _msgpack_load16(uint16_t,n,&tmp); |
| 359 | start_container(_array, tmp, MSGPACK_CT_ARRAY_ITEM); |
| 360 | } |
| 361 | case MSGPACK_CS_ARRAY_32:{ |
| 362 | /* FIXME security guard */ |
| 363 | uint32_t tmp; |
| 364 | _msgpack_load32(uint32_t,n,&tmp); |
| 365 | start_container(_array, tmp, MSGPACK_CT_ARRAY_ITEM); |
| 366 | } |
| 367 | |
| 368 | case MSGPACK_CS_MAP_16:{ |
| 369 | uint16_t tmp; |
| 370 | _msgpack_load16(uint16_t,n,&tmp); |
| 371 | start_container(_map, tmp, MSGPACK_CT_MAP_KEY); |
| 372 | } |
| 373 | case MSGPACK_CS_MAP_32:{ |
| 374 | /* FIXME security guard */ |
| 375 | uint32_t tmp; |
| 376 | _msgpack_load32(uint32_t,n,&tmp); |
| 377 | start_container(_map, tmp, MSGPACK_CT_MAP_KEY); |
| 378 | } |
| 379 | |
| 380 | default: |
| 381 | ret = MSGPACK_UNPACK_PARSE_ERROR; |
| 382 | goto _failed; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | _push: |
| 387 | if(top == 0) { goto _finish; } |
| 388 | c = &stack[top-1]; |
| 389 | switch(c->ct) { |
| 390 | case MSGPACK_CT_ARRAY_ITEM: |
| 391 | ret = msgpack_unpack_callback(_array_item)(user, &c->obj, obj); \ |
| 392 | if(ret < 0) { goto _failed; } |
| 393 | if(--c->count == 0) { |
| 394 | obj = c->obj; |
| 395 | --top; |
| 396 | /*printf("stack pop %d\n", top);*/ |
| 397 | goto _push; |
| 398 | } |
| 399 | goto _header_again; |
| 400 | case MSGPACK_CT_MAP_KEY: |
| 401 | c->map_key = obj; |
| 402 | c->ct = MSGPACK_CT_MAP_VALUE; |
| 403 | goto _header_again; |
| 404 | case MSGPACK_CT_MAP_VALUE: |
| 405 | ret = msgpack_unpack_callback(_map_item)(user, &c->obj, c->map_key, obj); \ |
| 406 | if(ret < 0) { goto _failed; } |
| 407 | if(--c->count == 0) { |
| 408 | obj = c->obj; |
| 409 | --top; |
| 410 | /*printf("stack pop %d\n", top);*/ |
| 411 | goto _push; |
| 412 | } |
| 413 | c->ct = MSGPACK_CT_MAP_KEY; |
| 414 | goto _header_again; |
| 415 | |
| 416 | default: |
| 417 | ret = MSGPACK_UNPACK_PARSE_ERROR; |
| 418 | goto _failed; |
| 419 | } |
| 420 | |
| 421 | _header_again: |
| 422 | cs = MSGPACK_CS_HEADER; |
| 423 | ++p; |
| 424 | } while(p != pe); |
| 425 | goto _out; |
| 426 | |
| 427 | |
| 428 | _finish: |
| 429 | stack[0].obj = obj; |
| 430 | ++p; |
| 431 | ret = 1; |
| 432 | /*printf("-- finish --\n"); */ |
| 433 | goto _end; |
| 434 | |
| 435 | _failed: |
| 436 | /*printf("** FAILED **\n"); */ |
| 437 | goto _end; |
| 438 | |
| 439 | _out: |
| 440 | ret = 0; |
| 441 | goto _end; |
| 442 | |
| 443 | _end: |
| 444 | ctx->cs = cs; |
| 445 | ctx->trail = trail; |
| 446 | ctx->top = top; |
| 447 | *off = (size_t)(p - (const unsigned char*)data); |
| 448 | |
| 449 | return ret; |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | #undef msgpack_unpack_func |
| 454 | #undef msgpack_unpack_callback |
| 455 | #undef msgpack_unpack_struct |
| 456 | #undef msgpack_unpack_object |
| 457 | #undef msgpack_unpack_user |
| 458 | |
| 459 | #undef push_simple_value |
| 460 | #undef push_fixed_value |
| 461 | #undef push_variable_value |
| 462 | #undef again_fixed_trail |
| 463 | #undef again_fixed_trail_if_zero |
| 464 | #undef start_container |
| 465 | |
| 466 | #undef NEXT_CS |
| 467 | |
| 468 | #undef SWITCH_RANGE_BEGIN |
| 469 | #undef SWITCH_RANGE |
| 470 | #undef SWITCH_RANGE_DEFAULT |
| 471 | #undef SWITCH_RANGE_END |