1 /* tasn_prn.c */ 2 /* Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000,2005 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing (at) OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay (at) cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh (at) cryptsoft.com). 56 * 57 */ 58 59 60 #include <stddef.h> 61 #include "cryptlib.h" 62 #include <openssl/asn1.h> 63 #include <openssl/asn1t.h> 64 #include <openssl/objects.h> 65 #include <openssl/buffer.h> 66 #include <openssl/err.h> 67 #include <openssl/x509v3.h> 68 #include "asn1_locl.h" 69 70 /* Print routines. 71 */ 72 73 /* ASN1_PCTX routines */ 74 75 ASN1_PCTX default_pctx = 76 { 77 ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */ 78 0, /* nm_flags */ 79 0, /* cert_flags */ 80 0, /* oid_flags */ 81 0 /* str_flags */ 82 }; 83 84 85 ASN1_PCTX *ASN1_PCTX_new(void) 86 { 87 ASN1_PCTX *ret; 88 ret = OPENSSL_malloc(sizeof(ASN1_PCTX)); 89 if (ret == NULL) 90 { 91 ASN1err(ASN1_F_ASN1_PCTX_NEW, ERR_R_MALLOC_FAILURE); 92 return NULL; 93 } 94 ret->flags = 0; 95 ret->nm_flags = 0; 96 ret->cert_flags = 0; 97 ret->oid_flags = 0; 98 ret->str_flags = 0; 99 return ret; 100 } 101 102 void ASN1_PCTX_free(ASN1_PCTX *p) 103 { 104 OPENSSL_free(p); 105 } 106 107 unsigned long ASN1_PCTX_get_flags(ASN1_PCTX *p) 108 { 109 return p->flags; 110 } 111 112 void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags) 113 { 114 p->flags = flags; 115 } 116 117 unsigned long ASN1_PCTX_get_nm_flags(ASN1_PCTX *p) 118 { 119 return p->nm_flags; 120 } 121 122 void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags) 123 { 124 p->nm_flags = flags; 125 } 126 127 unsigned long ASN1_PCTX_get_cert_flags(ASN1_PCTX *p) 128 { 129 return p->cert_flags; 130 } 131 132 void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags) 133 { 134 p->cert_flags = flags; 135 } 136 137 unsigned long ASN1_PCTX_get_oid_flags(ASN1_PCTX *p) 138 { 139 return p->oid_flags; 140 } 141 142 void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags) 143 { 144 p->oid_flags = flags; 145 } 146 147 unsigned long ASN1_PCTX_get_str_flags(ASN1_PCTX *p) 148 { 149 return p->str_flags; 150 } 151 152 void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags) 153 { 154 p->str_flags = flags; 155 } 156 157 /* Main print routines */ 158 159 static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, 160 const ASN1_ITEM *it, 161 const char *fname, const char *sname, 162 int nohdr, const ASN1_PCTX *pctx); 163 164 int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, 165 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx); 166 167 static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld, 168 const ASN1_ITEM *it, int indent, 169 const char *fname, const char *sname, 170 const ASN1_PCTX *pctx); 171 172 static int asn1_print_fsname(BIO *out, int indent, 173 const char *fname, const char *sname, 174 const ASN1_PCTX *pctx); 175 176 int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent, 177 const ASN1_ITEM *it, const ASN1_PCTX *pctx) 178 { 179 const char *sname; 180 if (pctx == NULL) 181 pctx = &default_pctx; 182 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME) 183 sname = NULL; 184 else 185 sname = it->sname; 186 return asn1_item_print_ctx(out, &ifld, indent, it, 187 NULL, sname, 0, pctx); 188 } 189 190 static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, 191 const ASN1_ITEM *it, 192 const char *fname, const char *sname, 193 int nohdr, const ASN1_PCTX *pctx) 194 { 195 const ASN1_TEMPLATE *tt; 196 const ASN1_EXTERN_FUNCS *ef; 197 ASN1_VALUE **tmpfld; 198 const ASN1_AUX *aux = it->funcs; 199 ASN1_aux_cb *asn1_cb; 200 ASN1_PRINT_ARG parg; 201 int i; 202 if (aux && aux->asn1_cb) 203 { 204 parg.out = out; 205 parg.indent = indent; 206 parg.pctx = pctx; 207 asn1_cb = aux->asn1_cb; 208 } 209 else asn1_cb = 0; 210 211 if(*fld == NULL) 212 { 213 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) 214 { 215 if (!nohdr && !asn1_print_fsname(out, indent, 216 fname, sname, pctx)) 217 return 0; 218 if (BIO_puts(out, "<ABSENT>\n") <= 0) 219 return 0; 220 } 221 return 1; 222 } 223 224 switch(it->itype) 225 { 226 case ASN1_ITYPE_PRIMITIVE: 227 if(it->templates) 228 { 229 if (!asn1_template_print_ctx(out, fld, indent, 230 it->templates, pctx)) 231 return 0; 232 } 233 /* fall thru */ 234 case ASN1_ITYPE_MSTRING: 235 if (!asn1_primitive_print(out, fld, it, 236 indent, fname, sname,pctx)) 237 return 0; 238 break; 239 240 case ASN1_ITYPE_EXTERN: 241 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) 242 return 0; 243 /* Use new style print routine if possible */ 244 ef = it->funcs; 245 if (ef && ef->asn1_ex_print) 246 { 247 i = ef->asn1_ex_print(out, fld, indent, "", pctx); 248 if (!i) 249 return 0; 250 if ((i == 2) && (BIO_puts(out, "\n") <= 0)) 251 return 0; 252 return 1; 253 } 254 else if (sname && 255 BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0) 256 return 0; 257 break; 258 259 case ASN1_ITYPE_CHOICE: 260 #if 0 261 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) 262 return 0; 263 #endif 264 /* CHOICE type, get selector */ 265 i = asn1_get_choice_selector(fld, it); 266 /* This should never happen... */ 267 if((i < 0) || (i >= it->tcount)) 268 { 269 if (BIO_printf(out, 270 "ERROR: selector [%d] invalid\n", i) <= 0) 271 return 0; 272 return 1; 273 } 274 tt = it->templates + i; 275 tmpfld = asn1_get_field_ptr(fld, tt); 276 if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx)) 277 return 0; 278 break; 279 280 case ASN1_ITYPE_SEQUENCE: 281 case ASN1_ITYPE_NDEF_SEQUENCE: 282 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx)) 283 return 0; 284 if (fname || sname) 285 { 286 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) 287 { 288 if (BIO_puts(out, " {\n") <= 0) 289 return 0; 290 } 291 else 292 { 293 if (BIO_puts(out, "\n") <= 0) 294 return 0; 295 } 296 } 297 298 if (asn1_cb) 299 { 300 i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg); 301 if (i == 0) 302 return 0; 303 if (i == 2) 304 return 1; 305 } 306 307 /* Print each field entry */ 308 for(i = 0, tt = it->templates; i < it->tcount; i++, tt++) 309 { 310 const ASN1_TEMPLATE *seqtt; 311 seqtt = asn1_do_adb(fld, tt, 1); 312 tmpfld = asn1_get_field_ptr(fld, seqtt); 313 if (!asn1_template_print_ctx(out, tmpfld, 314 indent + 2, seqtt, pctx)) 315 return 0; 316 } 317 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) 318 { 319 if (BIO_printf(out, "%*s}\n", indent, "") < 0) 320 return 0; 321 } 322 323 if (asn1_cb) 324 { 325 i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg); 326 if (i == 0) 327 return 0; 328 } 329 break; 330 331 default: 332 BIO_printf(out, "Unprocessed type %d\n", it->itype); 333 return 0; 334 } 335 336 return 1; 337 } 338 339 int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent, 340 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx) 341 { 342 int i, flags; 343 const char *sname, *fname; 344 flags = tt->flags; 345 if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME) 346 sname = ASN1_ITEM_ptr(tt->item)->sname; 347 else 348 sname = NULL; 349 if(pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME) 350 fname = NULL; 351 else 352 fname = tt->field_name; 353 if(flags & ASN1_TFLG_SK_MASK) 354 { 355 char *tname; 356 ASN1_VALUE *skitem; 357 STACK_OF(ASN1_VALUE) *stack; 358 359 /* SET OF, SEQUENCE OF */ 360 if (fname) 361 { 362 if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) 363 { 364 if(flags & ASN1_TFLG_SET_OF) 365 tname = "SET"; 366 else 367 tname = "SEQUENCE"; 368 if (BIO_printf(out, "%*s%s OF %s {\n", 369 indent, "", tname, tt->field_name) <= 0) 370 return 0; 371 } 372 else if (BIO_printf(out, "%*s%s:\n", indent, "", 373 fname) <= 0) 374 return 0; 375 } 376 stack = (STACK_OF(ASN1_VALUE) *)*fld; 377 for(i = 0; i < sk_ASN1_VALUE_num(stack); i++) 378 { 379 if ((i > 0) && (BIO_puts(out, "\n") <= 0)) 380 return 0; 381 382 skitem = sk_ASN1_VALUE_value(stack, i); 383 if (!asn1_item_print_ctx(out, &skitem, indent + 2, 384 ASN1_ITEM_ptr(tt->item), NULL, NULL, 1, pctx)) 385 return 0; 386 } 387 if (!i && BIO_printf(out, "%*s<EMPTY>\n", indent + 2, "") <= 0) 388 return 0; 389 if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) 390 { 391 if (BIO_printf(out, "%*s}\n", indent, "") <= 0) 392 return 0; 393 } 394 return 1; 395 } 396 return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item), 397 fname, sname, 0, pctx); 398 } 399 400 static int asn1_print_fsname(BIO *out, int indent, 401 const char *fname, const char *sname, 402 const ASN1_PCTX *pctx) 403 { 404 static char spaces[] = " "; 405 const int nspaces = sizeof(spaces) - 1; 406 407 #if 0 408 if (!sname && !fname) 409 return 1; 410 #endif 411 412 while (indent > nspaces) 413 { 414 if (BIO_write(out, spaces, nspaces) != nspaces) 415 return 0; 416 indent -= nspaces; 417 } 418 if (BIO_write(out, spaces, indent) != indent) 419 return 0; 420 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME) 421 sname = NULL; 422 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME) 423 fname = NULL; 424 if (!sname && !fname) 425 return 1; 426 if (fname) 427 { 428 if (BIO_puts(out, fname) <= 0) 429 return 0; 430 } 431 if (sname) 432 { 433 if (fname) 434 { 435 if (BIO_printf(out, " (%s)", sname) <= 0) 436 return 0; 437 } 438 else 439 { 440 if (BIO_puts(out, sname) <= 0) 441 return 0; 442 } 443 } 444 if (BIO_write(out, ": ", 2) != 2) 445 return 0; 446 return 1; 447 } 448 449 static int asn1_print_boolean_ctx(BIO *out, const int bool, 450 const ASN1_PCTX *pctx) 451 { 452 const char *str; 453 switch (bool) 454 { 455 case -1: 456 str = "BOOL ABSENT"; 457 break; 458 459 case 0: 460 str = "FALSE"; 461 break; 462 463 default: 464 str = "TRUE"; 465 break; 466 467 } 468 469 if (BIO_puts(out, str) <= 0) 470 return 0; 471 return 1; 472 473 } 474 475 static int asn1_print_integer_ctx(BIO *out, ASN1_INTEGER *str, 476 const ASN1_PCTX *pctx) 477 { 478 char *s; 479 int ret = 1; 480 s = i2s_ASN1_INTEGER(NULL, str); 481 if (BIO_puts(out, s) <= 0) 482 ret = 0; 483 OPENSSL_free(s); 484 return ret; 485 } 486 487 static int asn1_print_oid_ctx(BIO *out, const ASN1_OBJECT *oid, 488 const ASN1_PCTX *pctx) 489 { 490 char objbuf[80]; 491 const char *ln; 492 ln = OBJ_nid2ln(OBJ_obj2nid(oid)); 493 if(!ln) 494 ln = ""; 495 OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1); 496 if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0) 497 return 0; 498 return 1; 499 } 500 501 static int asn1_print_obstring_ctx(BIO *out, ASN1_STRING *str, int indent, 502 const ASN1_PCTX *pctx) 503 { 504 if (str->type == V_ASN1_BIT_STRING) 505 { 506 if (BIO_printf(out, " (%ld unused bits)\n", 507 str->flags & 0x7) <= 0) 508 return 0; 509 } 510 else if (BIO_puts(out, "\n") <= 0) 511 return 0; 512 if ((str->length > 0) 513 && BIO_dump_indent(out, (char *)str->data, str->length, 514 indent + 2) <= 0) 515 return 0; 516 return 1; 517 } 518 519 static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld, 520 const ASN1_ITEM *it, int indent, 521 const char *fname, const char *sname, 522 const ASN1_PCTX *pctx) 523 { 524 long utype; 525 ASN1_STRING *str; 526 int ret = 1, needlf = 1; 527 const char *pname; 528 const ASN1_PRIMITIVE_FUNCS *pf; 529 pf = it->funcs; 530 if (!asn1_print_fsname(out, indent, fname, sname, pctx)) 531 return 0; 532 if (pf && pf->prim_print) 533 return pf->prim_print(out, fld, it, indent, pctx); 534 str = (ASN1_STRING *)*fld; 535 if (it->itype == ASN1_ITYPE_MSTRING) 536 utype = str->type & ~V_ASN1_NEG; 537 else 538 utype = it->utype; 539 if (utype == V_ASN1_ANY) 540 { 541 ASN1_TYPE *atype = (ASN1_TYPE *)*fld; 542 utype = atype->type; 543 fld = &atype->value.asn1_value; 544 str = (ASN1_STRING *)*fld; 545 if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE) 546 pname = NULL; 547 else 548 pname = ASN1_tag2str(utype); 549 } 550 else 551 { 552 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE) 553 pname = ASN1_tag2str(utype); 554 else 555 pname = NULL; 556 } 557 558 if (utype == V_ASN1_NULL) 559 { 560 if (BIO_puts(out, "NULL\n") <= 0) 561 return 0; 562 return 1; 563 } 564 565 if (pname) 566 { 567 if (BIO_puts(out, pname) <= 0) 568 return 0; 569 if (BIO_puts(out, ":") <= 0) 570 return 0; 571 } 572 573 switch (utype) 574 { 575 case V_ASN1_BOOLEAN: 576 { 577 int bool = *(int *)fld; 578 if (bool == -1) 579 bool = it->size; 580 ret = asn1_print_boolean_ctx(out, bool, pctx); 581 } 582 break; 583 584 case V_ASN1_INTEGER: 585 case V_ASN1_ENUMERATED: 586 ret = asn1_print_integer_ctx(out, str, pctx); 587 break; 588 589 case V_ASN1_UTCTIME: 590 ret = ASN1_UTCTIME_print(out, str); 591 break; 592 593 case V_ASN1_GENERALIZEDTIME: 594 ret = ASN1_GENERALIZEDTIME_print(out, str); 595 break; 596 597 case V_ASN1_OBJECT: 598 ret = asn1_print_oid_ctx(out, (const ASN1_OBJECT *)*fld, pctx); 599 break; 600 601 case V_ASN1_OCTET_STRING: 602 case V_ASN1_BIT_STRING: 603 ret = asn1_print_obstring_ctx(out, str, indent, pctx); 604 needlf = 0; 605 break; 606 607 case V_ASN1_SEQUENCE: 608 case V_ASN1_SET: 609 case V_ASN1_OTHER: 610 if (BIO_puts(out, "\n") <= 0) 611 return 0; 612 if (ASN1_parse_dump(out, str->data, str->length, 613 indent, 0) <= 0) 614 ret = 0; 615 needlf = 0; 616 break; 617 618 default: 619 ret = ASN1_STRING_print_ex(out, str, pctx->str_flags); 620 621 } 622 if (!ret) 623 return 0; 624 if (needlf && BIO_puts(out, "\n") <= 0) 625 return 0; 626 return 1; 627 } 628
