1 /* 2 * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "gen_locl.h" 35 #include "lex.h" 36 37 RCSID("$Id$"); 38 39 static void 40 decode_primitive (const char *typename, const char *name, const char *forwstr) 41 { 42 #if 0 43 fprintf (codefile, 44 "e = decode_%s(p, len, %s, &l);\n" 45 "%s;\n", 46 typename, 47 name, 48 forwstr); 49 #else 50 fprintf (codefile, 51 "e = der_get_%s(p, len, %s, &l);\n" 52 "if(e) %s;\np += l; len -= l; ret += l;\n", 53 typename, 54 name, 55 forwstr); 56 #endif 57 } 58 59 static void 60 find_tag (const Type *t, 61 Der_class *cl, Der_type *ty, unsigned *tag) 62 { 63 switch (t->type) { 64 case TBitString: 65 *cl = ASN1_C_UNIV; 66 *ty = PRIM; 67 *tag = UT_BitString; 68 break; 69 case TBoolean: 70 *cl = ASN1_C_UNIV; 71 *ty = PRIM; 72 *tag = UT_Boolean; 73 break; 74 case TChoice: 75 errx(1, "Cannot have recursive CHOICE"); 76 case TEnumerated: 77 *cl = ASN1_C_UNIV; 78 *ty = PRIM; 79 *tag = UT_Enumerated; 80 break; 81 case TGeneralString: 82 *cl = ASN1_C_UNIV; 83 *ty = PRIM; 84 *tag = UT_GeneralString; 85 break; 86 case TTeletexString: 87 *cl = ASN1_C_UNIV; 88 *ty = PRIM; 89 *tag = UT_TeletexString; 90 break; 91 case TGeneralizedTime: 92 *cl = ASN1_C_UNIV; 93 *ty = PRIM; 94 *tag = UT_GeneralizedTime; 95 break; 96 case TIA5String: 97 *cl = ASN1_C_UNIV; 98 *ty = PRIM; 99 *tag = UT_IA5String; 100 break; 101 case TInteger: 102 *cl = ASN1_C_UNIV; 103 *ty = PRIM; 104 *tag = UT_Integer; 105 break; 106 case TNull: 107 *cl = ASN1_C_UNIV; 108 *ty = PRIM; 109 *tag = UT_Null; 110 break; 111 case TOID: 112 *cl = ASN1_C_UNIV; 113 *ty = PRIM; 114 *tag = UT_OID; 115 break; 116 case TOctetString: 117 *cl = ASN1_C_UNIV; 118 *ty = PRIM; 119 *tag = UT_OctetString; 120 break; 121 case TPrintableString: 122 *cl = ASN1_C_UNIV; 123 *ty = PRIM; 124 *tag = UT_PrintableString; 125 break; 126 case TSequence: 127 case TSequenceOf: 128 *cl = ASN1_C_UNIV; 129 *ty = CONS; 130 *tag = UT_Sequence; 131 break; 132 case TSet: 133 case TSetOf: 134 *cl = ASN1_C_UNIV; 135 *ty = CONS; 136 *tag = UT_Set; 137 break; 138 case TTag: 139 *cl = t->tag.tagclass; 140 *ty = is_primitive_type(t->subtype->type) ? PRIM : CONS; 141 *tag = t->tag.tagvalue; 142 break; 143 case TType: 144 if ((t->symbol->stype == Stype && t->symbol->type == NULL) 145 || t->symbol->stype == SUndefined) { 146 lex_error_message("%s is imported or still undefined, " 147 " can't generate tag checking data in CHOICE " 148 "without this information", 149 t->symbol->name); 150 exit(1); 151 } 152 find_tag(t->symbol->type, cl, ty, tag); 153 return; 154 case TUTCTime: 155 *cl = ASN1_C_UNIV; 156 *ty = PRIM; 157 *tag = UT_UTCTime; 158 break; 159 case TUTF8String: 160 *cl = ASN1_C_UNIV; 161 *ty = PRIM; 162 *tag = UT_UTF8String; 163 break; 164 case TBMPString: 165 *cl = ASN1_C_UNIV; 166 *ty = PRIM; 167 *tag = UT_BMPString; 168 break; 169 case TUniversalString: 170 *cl = ASN1_C_UNIV; 171 *ty = PRIM; 172 *tag = UT_UniversalString; 173 break; 174 case TVisibleString: 175 *cl = ASN1_C_UNIV; 176 *ty = PRIM; 177 *tag = UT_VisibleString; 178 break; 179 default: 180 abort(); 181 } 182 } 183 184 static void 185 range_check(const char *name, 186 const char *length, 187 const char *forwstr, 188 struct range *r) 189 { 190 if (r->min == r->max + 2 || r->min < r->max) 191 fprintf (codefile, 192 "if ((%s)->%s > %d) {\n" 193 "e = ASN1_MAX_CONSTRAINT; %s;\n" 194 "}\n", 195 name, length, r->max, forwstr); 196 if (r->min - 1 == r->max || r->min < r->max) 197 fprintf (codefile, 198 "if ((%s)->%s < %d) {\n" 199 "e = ASN1_MIN_CONSTRAINT; %s;\n" 200 "}\n", 201 name, length, r->min, forwstr); 202 if (r->max == r->min) 203 fprintf (codefile, 204 "if ((%s)->%s != %d) {\n" 205 "e = ASN1_EXACT_CONSTRAINT; %s;\n" 206 "}\n", 207 name, length, r->min, forwstr); 208 } 209 210 static int 211 decode_type (const char *name, const Type *t, int optional, 212 const char *forwstr, const char *tmpstr, const char *dertype, 213 unsigned int depth) 214 { 215 switch (t->type) { 216 case TType: { 217 if (optional) 218 fprintf(codefile, 219 "%s = calloc(1, sizeof(*%s));\n" 220 "if (%s == NULL) %s;\n", 221 name, name, name, forwstr); 222 fprintf (codefile, 223 "e = decode_%s(p, len, %s, &l);\n", 224 t->symbol->gen_name, name); 225 if (optional) { 226 fprintf (codefile, 227 "if(e) {\n" 228 "free(%s);\n" 229 "%s = NULL;\n" 230 "} else {\n" 231 "p += l; len -= l; ret += l;\n" 232 "}\n", 233 name, name); 234 } else { 235 fprintf (codefile, 236 "if(e) %s;\n", 237 forwstr); 238 fprintf (codefile, 239 "p += l; len -= l; ret += l;\n"); 240 } 241 break; 242 } 243 case TInteger: 244 if(t->members) { 245 fprintf(codefile, 246 "{\n" 247 "int enumint;\n"); 248 decode_primitive ("integer", "&enumint", forwstr); 249 fprintf(codefile, 250 "*%s = enumint;\n" 251 "}\n", 252 name); 253 } else if (t->range == NULL) { 254 decode_primitive ("heim_integer", name, forwstr); 255 } else if (t->range->min == INT_MIN && t->range->max == INT_MAX) { 256 decode_primitive ("integer", name, forwstr); 257 } else if (t->range->min == 0 && t->range->max == UINT_MAX) { 258 decode_primitive ("unsigned", name, forwstr); 259 } else if (t->range->min == 0 && t->range->max == INT_MAX) { 260 decode_primitive ("unsigned", name, forwstr); 261 } else 262 errx(1, "%s: unsupported range %d -> %d", 263 name, t->range->min, t->range->max); 264 break; 265 case TBoolean: 266 decode_primitive ("boolean", name, forwstr); 267 break; 268 case TEnumerated: 269 decode_primitive ("enumerated", name, forwstr); 270 break; 271 case TOctetString: 272 if (dertype) { 273 fprintf(codefile, 274 "if (%s == CONS) {\n", 275 dertype); 276 decode_primitive("octet_string_ber", name, forwstr); 277 fprintf(codefile, 278 "} else {\n"); 279 } 280 decode_primitive ("octet_string", name, forwstr); 281 if (dertype) 282 fprintf(codefile, "}\n"); 283 if (t->range) 284 range_check(name, "length", forwstr, t->range); 285 break; 286 case TBitString: { 287 Member *m; 288 int pos = 0; 289 290 if (ASN1_TAILQ_EMPTY(t->members)) { 291 decode_primitive ("bit_string", name, forwstr); 292 break; 293 } 294 fprintf(codefile, 295 "if (len < 1) return ASN1_OVERRUN;\n" 296 "p++; len--; ret++;\n"); 297 fprintf(codefile, 298 "do {\n" 299 "if (len < 1) break;\n"); 300 ASN1_TAILQ_FOREACH(m, t->members, members) { 301 while (m->val / 8 > pos / 8) { 302 fprintf (codefile, 303 "p++; len--; ret++;\n" 304 "if (len < 1) break;\n"); 305 pos += 8; 306 } 307 fprintf (codefile, 308 "(%s)->%s = (*p >> %d) & 1;\n", 309 name, m->gen_name, 7 - m->val % 8); 310 } 311 fprintf(codefile, 312 "} while(0);\n"); 313 fprintf (codefile, 314 "p += len; ret += len;\n"); 315 break; 316 } 317 case TSequence: { 318 Member *m; 319 320 if (t->members == NULL) 321 break; 322 323 ASN1_TAILQ_FOREACH(m, t->members, members) { 324 char *s = NULL; 325 326 if (m->ellipsis) 327 continue; 328 329 if (asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", 330 name, m->gen_name) < 0 || s == NULL) 331 errx(1, "malloc"); 332 decode_type (s, m->type, m->optional, forwstr, m->gen_name, NULL, 333 depth + 1); 334 free (s); 335 } 336 337 break; 338 } 339 case TSet: { 340 Member *m; 341 unsigned int memno; 342 343 if(t->members == NULL) 344 break; 345 346 fprintf(codefile, "{\n"); 347 fprintf(codefile, "unsigned int members = 0;\n"); 348 fprintf(codefile, "while(len > 0) {\n"); 349 fprintf(codefile, 350 "Der_class class;\n" 351 "Der_type type;\n" 352 "int tag;\n" 353 "e = der_get_tag (p, len, &class, &type, &tag, NULL);\n" 354 "if(e) %s;\n", forwstr); 355 fprintf(codefile, "switch (MAKE_TAG(class, type, tag)) {\n"); 356 memno = 0; 357 ASN1_TAILQ_FOREACH(m, t->members, members) { 358 char *s; 359 360 assert(m->type->type == TTag); 361 362 fprintf(codefile, "case MAKE_TAG(%s, %s, %s):\n", 363 classname(m->type->tag.tagclass), 364 is_primitive_type(m->type->subtype->type) ? "PRIM" : "CONS", 365 valuename(m->type->tag.tagclass, m->type->tag.tagvalue)); 366 367 if (asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", name, m->gen_name) < 0 || s == NULL) 368 errx(1, "malloc"); 369 if(m->optional) 370 fprintf(codefile, 371 "%s = calloc(1, sizeof(*%s));\n" 372 "if (%s == NULL) { e = ENOMEM; %s; }\n", 373 s, s, s, forwstr); 374 decode_type (s, m->type, 0, forwstr, m->gen_name, NULL, depth + 1); 375 free (s); 376 377 fprintf(codefile, "members |= (1 << %d);\n", memno); 378 memno++; 379 fprintf(codefile, "break;\n"); 380 } 381 fprintf(codefile, 382 "default:\n" 383 "return ASN1_MISPLACED_FIELD;\n" 384 "break;\n"); 385 fprintf(codefile, "}\n"); 386 fprintf(codefile, "}\n"); 387 memno = 0; 388 ASN1_TAILQ_FOREACH(m, t->members, members) { 389 char *s; 390 391 if (asprintf (&s, "%s->%s", name, m->gen_name) < 0 || s == NULL) 392 errx(1, "malloc"); 393 fprintf(codefile, "if((members & (1 << %d)) == 0)\n", memno); 394 if(m->optional) 395 fprintf(codefile, "%s = NULL;\n", s); 396 else if(m->defval) 397 gen_assign_defval(s, m->defval); 398 else 399 fprintf(codefile, "return ASN1_MISSING_FIELD;\n"); 400 free(s); 401 memno++; 402 } 403 fprintf(codefile, "}\n"); 404 break; 405 } 406 case TSetOf: 407 case TSequenceOf: { 408 char *n = NULL; 409 char *sname = NULL; 410 411 fprintf (codefile, 412 "{\n" 413 "size_t %s_origlen = len;\n" 414 "size_t %s_oldret = ret;\n" 415 "size_t %s_olen = 0;\n" 416 "void *%s_tmp;\n" 417 "ret = 0;\n" 418 "(%s)->len = 0;\n" 419 "(%s)->val = NULL;\n", 420 tmpstr, 421 tmpstr, 422 tmpstr, 423 tmpstr, 424 name, 425 name); 426 427 fprintf (codefile, 428 "while(ret < %s_origlen) {\n" 429 "size_t %s_nlen = %s_olen + sizeof(*((%s)->val));\n" 430 "if (%s_olen > %s_nlen) { e = ASN1_OVERFLOW; %s; }\n" 431 "%s_olen = %s_nlen;\n" 432 "%s_tmp = realloc((%s)->val, %s_olen);\n" 433 "if (%s_tmp == NULL) { e = ENOMEM; %s; }\n" 434 "(%s)->val = %s_tmp;\n", 435 tmpstr, 436 tmpstr, tmpstr, name, 437 tmpstr, tmpstr, forwstr, 438 tmpstr, tmpstr, 439 tmpstr, name, tmpstr, 440 tmpstr, forwstr, 441 name, tmpstr); 442 443 if (asprintf (&n, "&(%s)->val[(%s)->len]", name, name) < 0 || n == NULL) 444 errx(1, "malloc"); 445 if (asprintf (&sname, "%s_s_of", tmpstr) < 0 || sname == NULL) 446 errx(1, "malloc"); 447 decode_type (n, t->subtype, 0, forwstr, sname, NULL, depth + 1); 448 fprintf (codefile, 449 "(%s)->len++;\n" 450 "len = %s_origlen - ret;\n" 451 "}\n" 452 "ret += %s_oldret;\n" 453 "}\n", 454 name, 455 tmpstr, tmpstr); 456 if (t->range) 457 range_check(name, "len", forwstr, t->range); 458 free (n); 459 free (sname); 460 break; 461 } 462 case TGeneralizedTime: 463 decode_primitive ("generalized_time", name, forwstr); 464 break; 465 case TGeneralString: 466 decode_primitive ("general_string", name, forwstr); 467 break; 468 case TTeletexString: 469 decode_primitive ("general_string", name, forwstr); 470 break; 471 case TTag:{ 472 char *tname = NULL, *typestring = NULL; 473 char *ide = NULL; 474 475 if (asprintf(&typestring, "%s_type", tmpstr) < 0 || typestring == NULL) 476 errx(1, "malloc"); 477 478 fprintf(codefile, 479 "{\n" 480 "size_t %s_datalen, %s_oldlen;\n" 481 "Der_type %s;\n", 482 tmpstr, tmpstr, typestring); 483 if(support_ber) 484 fprintf(codefile, 485 "int is_indefinite%u;\n", depth); 486 487 fprintf(codefile, "e = der_match_tag_and_length(p, len, %s, &%s, %s, " 488 "&%s_datalen, &l);\n", 489 classname(t->tag.tagclass), 490 typestring, 491 valuename(t->tag.tagclass, t->tag.tagvalue), 492 tmpstr); 493 494 /* XXX hardcode for now */ 495 if (support_ber && t->subtype->type == TOctetString) { 496 ide = typestring; 497 } else { 498 fprintf(codefile, 499 "if (e == 0 && %s != %s) { e = ASN1_BAD_ID; }\n", 500 typestring, 501 is_primitive_type(t->subtype->type) ? "PRIM" : "CONS"); 502 } 503 504 if(optional) { 505 fprintf(codefile, 506 "if(e) {\n" 507 "%s = NULL;\n" 508 "} else {\n" 509 "%s = calloc(1, sizeof(*%s));\n" 510 "if (%s == NULL) { e = ENOMEM; %s; }\n", 511 name, name, name, name, forwstr); 512 } else { 513 fprintf(codefile, "if(e) %s;\n", forwstr); 514 } 515 fprintf (codefile, 516 "p += l; len -= l; ret += l;\n" 517 "%s_oldlen = len;\n", 518 tmpstr); 519 if(support_ber) 520 fprintf (codefile, 521 "if((is_indefinite%u = _heim_fix_dce(%s_datalen, &len)) < 0)\n" 522 "{ e = ASN1_BAD_FORMAT; %s; }\n" 523 "if (is_indefinite%u) { if (len < 2) { e = ASN1_OVERRUN; %s; } len -= 2; }", 524 depth, tmpstr, forwstr, depth, forwstr); 525 else 526 fprintf(codefile, 527 "if (%s_datalen > len) { e = ASN1_OVERRUN; %s; }\n" 528 "len = %s_datalen;\n", tmpstr, forwstr, tmpstr); 529 if (asprintf (&tname, "%s_Tag", tmpstr) < 0 || tname == NULL) 530 errx(1, "malloc"); 531 decode_type (name, t->subtype, 0, forwstr, tname, ide, depth + 1); 532 if(support_ber) 533 fprintf(codefile, 534 "if(is_indefinite%u){\n" 535 "len += 2;\n" 536 "e = der_match_tag_and_length(p, len, " 537 "(Der_class)0, &%s, UT_EndOfContent, " 538 "&%s_datalen, &l);\n" 539 "if(e) %s;\n" 540 "p += l; len -= l; ret += l;\n" 541 "if (%s != (Der_type)0) { e = ASN1_BAD_ID; %s; }\n" 542 "} else \n", 543 depth, 544 typestring, 545 tmpstr, 546 forwstr, 547 typestring, forwstr); 548 fprintf(codefile, 549 "len = %s_oldlen - %s_datalen;\n", 550 tmpstr, tmpstr); 551 if(optional) 552 fprintf(codefile, 553 "}\n"); 554 fprintf(codefile, 555 "}\n"); 556 free(tname); 557 free(typestring); 558 break; 559 } 560 case TChoice: { 561 Member *m, *have_ellipsis = NULL; 562 const char *els = ""; 563 564 if (t->members == NULL) 565 break; 566 567 ASN1_TAILQ_FOREACH(m, t->members, members) { 568 const Type *tt = m->type; 569 char *s = NULL; 570 Der_class cl; 571 Der_type ty; 572 unsigned tag; 573 574 if (m->ellipsis) { 575 have_ellipsis = m; 576 continue; 577 } 578 579 find_tag(tt, &cl, &ty, &tag); 580 581 fprintf(codefile, 582 "%sif (der_match_tag(p, len, %s, %s, %s, NULL) == 0) {\n", 583 els, 584 classname(cl), 585 ty ? "CONS" : "PRIM", 586 valuename(cl, tag)); 587 fprintf(codefile, 588 "(%s)->element = %s;\n", 589 name, m->label); 590 if (asprintf (&s, "%s(%s)->u.%s", m->optional ? "" : "&", 591 name, m->gen_name) < 0 || s == NULL) 592 errx(1, "malloc"); 593 decode_type (s, m->type, m->optional, forwstr, m->gen_name, NULL, 594 depth + 1); 595 free(s); 596 fprintf(codefile, 597 "}\n"); 598 els = "else "; 599 } 600 if (have_ellipsis) { 601 fprintf(codefile, 602 "else {\n" 603 "(%s)->element = %s;\n" 604 "(%s)->u.%s.data = calloc(1, len);\n" 605 "if ((%s)->u.%s.data == NULL) {\n" 606 "e = ENOMEM; %s;\n" 607 "}\n" 608 "(%s)->u.%s.length = len;\n" 609 "memcpy((%s)->u.%s.data, p, len);\n" 610 "p += len;\n" 611 "ret += len;\n" 612 "len = 0;\n" 613 "}\n", 614 name, have_ellipsis->label, 615 name, have_ellipsis->gen_name, 616 name, have_ellipsis->gen_name, 617 forwstr, 618 name, have_ellipsis->gen_name, 619 name, have_ellipsis->gen_name); 620 } else { 621 fprintf(codefile, 622 "else {\n" 623 "e = ASN1_PARSE_ERROR;\n" 624 "%s;\n" 625 "}\n", 626 forwstr); 627 } 628 break; 629 } 630 case TUTCTime: 631 decode_primitive ("utctime", name, forwstr); 632 break; 633 case TUTF8String: 634 decode_primitive ("utf8string", name, forwstr); 635 break; 636 case TPrintableString: 637 decode_primitive ("printable_string", name, forwstr); 638 break; 639 case TIA5String: 640 decode_primitive ("ia5_string", name, forwstr); 641 break; 642 case TBMPString: 643 decode_primitive ("bmp_string", name, forwstr); 644 break; 645 case TUniversalString: 646 decode_primitive ("universal_string", name, forwstr); 647 break; 648 case TVisibleString: 649 decode_primitive ("visible_string", name, forwstr); 650 break; 651 case TNull: 652 fprintf (codefile, "/* NULL */\n"); 653 break; 654 case TOID: 655 decode_primitive ("oid", name, forwstr); 656 break; 657 default : 658 abort (); 659 } 660 return 0; 661 } 662 663 void 664 generate_type_decode (const Symbol *s) 665 { 666 int preserve = preserve_type(s->name) ? TRUE : FALSE; 667 668 fprintf (codefile, "int ASN1CALL\n" 669 "decode_%s(const unsigned char *p HEIMDAL_UNUSED_ATTRIBUTE," 670 " size_t len HEIMDAL_UNUSED_ATTRIBUTE, %s *data, size_t *size)\n" 671 "{\n", 672 s->gen_name, s->gen_name); 673 674 switch (s->type->type) { 675 case TInteger: 676 case TBoolean: 677 case TOctetString: 678 case TOID: 679 case TGeneralizedTime: 680 case TGeneralString: 681 case TTeletexString: 682 case TUTF8String: 683 case TPrintableString: 684 case TIA5String: 685 case TBMPString: 686 case TUniversalString: 687 case TVisibleString: 688 case TUTCTime: 689 case TNull: 690 case TEnumerated: 691 case TBitString: 692 case TSequence: 693 case TSequenceOf: 694 case TSet: 695 case TSetOf: 696 case TTag: 697 case TType: 698 case TChoice: 699 fprintf (codefile, 700 "size_t ret = 0;\n" 701 "size_t l HEIMDAL_UNUSED_ATTRIBUTE;\n" 702 "int e HEIMDAL_UNUSED_ATTRIBUTE;\n"); 703 if (preserve) 704 fprintf (codefile, "const unsigned char *begin = p;\n"); 705 706 fprintf (codefile, "\n"); 707 fprintf (codefile, "memset(data, 0, sizeof(*data));\n"); /* hack to avoid `unused variable' */ 708 709 decode_type ("data", s->type, 0, "goto fail", "Top", NULL, 1); 710 if (preserve) 711 fprintf (codefile, 712 "data->_save.data = calloc(1, ret);\n" 713 "if (data->_save.data == NULL) { \n" 714 "e = ENOMEM; goto fail; \n" 715 "}\n" 716 "data->_save.length = ret;\n" 717 "memcpy(data->_save.data, begin, ret);\n"); 718 fprintf (codefile, 719 "if(size) *size = ret;\n" 720 "return 0;\n"); 721 fprintf (codefile, 722 "fail:\n" 723 "free_%s(data);\n" 724 "return e;\n", 725 s->gen_name); 726 break; 727 default: 728 abort (); 729 } 730 fprintf (codefile, "}\n\n"); 731 } 732