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source: vbox/trunk/src/libs/openssl-1.1.1l/crypto/asn1/tasn_prn.c@ 91772

Last change on this file since 91772 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126
File size: 14.6 KB
Line 
1/*
2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stddef.h>
11#include "internal/cryptlib.h"
12#include <openssl/asn1.h>
13#include <openssl/asn1t.h>
14#include <openssl/objects.h>
15#include <openssl/buffer.h>
16#include <openssl/err.h>
17#include <openssl/x509v3.h>
18#include "crypto/asn1.h"
19#include "asn1_local.h"
20
21/*
22 * Print routines.
23 */
24
25/* ASN1_PCTX routines */
26
27static ASN1_PCTX default_pctx = {
28 ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */
29 0, /* nm_flags */
30 0, /* cert_flags */
31 0, /* oid_flags */
32 0 /* str_flags */
33};
34
35ASN1_PCTX *ASN1_PCTX_new(void)
36{
37 ASN1_PCTX *ret;
38
39 ret = OPENSSL_zalloc(sizeof(*ret));
40 if (ret == NULL) {
41 ASN1err(ASN1_F_ASN1_PCTX_NEW, ERR_R_MALLOC_FAILURE);
42 return NULL;
43 }
44 return ret;
45}
46
47void ASN1_PCTX_free(ASN1_PCTX *p)
48{
49 OPENSSL_free(p);
50}
51
52unsigned long ASN1_PCTX_get_flags(const ASN1_PCTX *p)
53{
54 return p->flags;
55}
56
57void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
58{
59 p->flags = flags;
60}
61
62unsigned long ASN1_PCTX_get_nm_flags(const ASN1_PCTX *p)
63{
64 return p->nm_flags;
65}
66
67void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
68{
69 p->nm_flags = flags;
70}
71
72unsigned long ASN1_PCTX_get_cert_flags(const ASN1_PCTX *p)
73{
74 return p->cert_flags;
75}
76
77void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
78{
79 p->cert_flags = flags;
80}
81
82unsigned long ASN1_PCTX_get_oid_flags(const ASN1_PCTX *p)
83{
84 return p->oid_flags;
85}
86
87void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
88{
89 p->oid_flags = flags;
90}
91
92unsigned long ASN1_PCTX_get_str_flags(const ASN1_PCTX *p)
93{
94 return p->str_flags;
95}
96
97void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
98{
99 p->str_flags = flags;
100}
101
102/* Main print routines */
103
104static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
105 const ASN1_ITEM *it,
106 const char *fname, const char *sname,
107 int nohdr, const ASN1_PCTX *pctx);
108
109static int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
110 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
111
112static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
113 const ASN1_ITEM *it, int indent,
114 const char *fname, const char *sname,
115 const ASN1_PCTX *pctx);
116
117static int asn1_print_fsname(BIO *out, int indent,
118 const char *fname, const char *sname,
119 const ASN1_PCTX *pctx);
120
121int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent,
122 const ASN1_ITEM *it, const ASN1_PCTX *pctx)
123{
124 const char *sname;
125 if (pctx == NULL)
126 pctx = &default_pctx;
127 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
128 sname = NULL;
129 else
130 sname = it->sname;
131 return asn1_item_print_ctx(out, &ifld, indent, it, NULL, sname, 0, pctx);
132}
133
134static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
135 const ASN1_ITEM *it,
136 const char *fname, const char *sname,
137 int nohdr, const ASN1_PCTX *pctx)
138{
139 const ASN1_TEMPLATE *tt;
140 const ASN1_EXTERN_FUNCS *ef;
141 ASN1_VALUE **tmpfld;
142 const ASN1_AUX *aux = it->funcs;
143 ASN1_aux_cb *asn1_cb;
144 ASN1_PRINT_ARG parg;
145 int i;
146 if (aux && aux->asn1_cb) {
147 parg.out = out;
148 parg.indent = indent;
149 parg.pctx = pctx;
150 asn1_cb = aux->asn1_cb;
151 } else
152 asn1_cb = 0;
153
154 if (((it->itype != ASN1_ITYPE_PRIMITIVE)
155 || (it->utype != V_ASN1_BOOLEAN)) && *fld == NULL) {
156 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) {
157 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
158 return 0;
159 if (BIO_puts(out, "<ABSENT>\n") <= 0)
160 return 0;
161 }
162 return 1;
163 }
164
165 switch (it->itype) {
166 case ASN1_ITYPE_PRIMITIVE:
167 if (it->templates) {
168 if (!asn1_template_print_ctx(out, fld, indent,
169 it->templates, pctx))
170 return 0;
171 break;
172 }
173 /* fall through */
174 case ASN1_ITYPE_MSTRING:
175 if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx))
176 return 0;
177 break;
178
179 case ASN1_ITYPE_EXTERN:
180 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
181 return 0;
182 /* Use new style print routine if possible */
183 ef = it->funcs;
184 if (ef && ef->asn1_ex_print) {
185 i = ef->asn1_ex_print(out, fld, indent, "", pctx);
186 if (!i)
187 return 0;
188 if ((i == 2) && (BIO_puts(out, "\n") <= 0))
189 return 0;
190 return 1;
191 } else if (sname &&
192 BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
193 return 0;
194 break;
195
196 case ASN1_ITYPE_CHOICE:
197 /* CHOICE type, get selector */
198 i = asn1_get_choice_selector(fld, it);
199 /* This should never happen... */
200 if ((i < 0) || (i >= it->tcount)) {
201 if (BIO_printf(out, "ERROR: selector [%d] invalid\n", i) <= 0)
202 return 0;
203 return 1;
204 }
205 tt = it->templates + i;
206 tmpfld = asn1_get_field_ptr(fld, tt);
207 if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
208 return 0;
209 break;
210
211 case ASN1_ITYPE_SEQUENCE:
212 case ASN1_ITYPE_NDEF_SEQUENCE:
213 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
214 return 0;
215 if (fname || sname) {
216 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
217 if (BIO_puts(out, " {\n") <= 0)
218 return 0;
219 } else {
220 if (BIO_puts(out, "\n") <= 0)
221 return 0;
222 }
223 }
224
225 if (asn1_cb) {
226 i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
227 if (i == 0)
228 return 0;
229 if (i == 2)
230 return 1;
231 }
232
233 /* Print each field entry */
234 for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
235 const ASN1_TEMPLATE *seqtt;
236 seqtt = asn1_do_adb(fld, tt, 1);
237 if (!seqtt)
238 return 0;
239 tmpfld = asn1_get_field_ptr(fld, seqtt);
240 if (!asn1_template_print_ctx(out, tmpfld,
241 indent + 2, seqtt, pctx))
242 return 0;
243 }
244 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
245 if (BIO_printf(out, "%*s}\n", indent, "") < 0)
246 return 0;
247 }
248
249 if (asn1_cb) {
250 i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
251 if (i == 0)
252 return 0;
253 }
254 break;
255
256 default:
257 BIO_printf(out, "Unprocessed type %d\n", it->itype);
258 return 0;
259 }
260
261 return 1;
262}
263
264static int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
265 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
266{
267 int i, flags;
268 const char *sname, *fname;
269 ASN1_VALUE *tfld;
270 flags = tt->flags;
271 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
272 sname = ASN1_ITEM_ptr(tt->item)->sname;
273 else
274 sname = NULL;
275 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
276 fname = NULL;
277 else
278 fname = tt->field_name;
279
280 /*
281 * If field is embedded then fld needs fixing so it is a pointer to
282 * a pointer to a field.
283 */
284 if (flags & ASN1_TFLG_EMBED) {
285 tfld = (ASN1_VALUE *)fld;
286 fld = &tfld;
287 }
288
289 if (flags & ASN1_TFLG_SK_MASK) {
290 char *tname;
291 ASN1_VALUE *skitem;
292 STACK_OF(ASN1_VALUE) *stack;
293
294 /* SET OF, SEQUENCE OF */
295 if (fname) {
296 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) {
297 if (flags & ASN1_TFLG_SET_OF)
298 tname = "SET";
299 else
300 tname = "SEQUENCE";
301 if (BIO_printf(out, "%*s%s OF %s {\n",
302 indent, "", tname, tt->field_name) <= 0)
303 return 0;
304 } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0)
305 return 0;
306 }
307 stack = (STACK_OF(ASN1_VALUE) *)*fld;
308 for (i = 0; i < sk_ASN1_VALUE_num(stack); i++) {
309 if ((i > 0) && (BIO_puts(out, "\n") <= 0))
310 return 0;
311
312 skitem = sk_ASN1_VALUE_value(stack, i);
313 if (!asn1_item_print_ctx(out, &skitem, indent + 2,
314 ASN1_ITEM_ptr(tt->item), NULL, NULL, 1,
315 pctx))
316 return 0;
317 }
318 if (i == 0 && BIO_printf(out, "%*s<%s>\n", indent + 2, "",
319 stack == NULL ? "ABSENT" : "EMPTY") <= 0)
320 return 0;
321 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
322 if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
323 return 0;
324 }
325 return 1;
326 }
327 return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
328 fname, sname, 0, pctx);
329}
330
331static int asn1_print_fsname(BIO *out, int indent,
332 const char *fname, const char *sname,
333 const ASN1_PCTX *pctx)
334{
335 static const char spaces[] = " ";
336 static const int nspaces = sizeof(spaces) - 1;
337
338 while (indent > nspaces) {
339 if (BIO_write(out, spaces, nspaces) != nspaces)
340 return 0;
341 indent -= nspaces;
342 }
343 if (BIO_write(out, spaces, indent) != indent)
344 return 0;
345 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
346 sname = NULL;
347 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
348 fname = NULL;
349 if (!sname && !fname)
350 return 1;
351 if (fname) {
352 if (BIO_puts(out, fname) <= 0)
353 return 0;
354 }
355 if (sname) {
356 if (fname) {
357 if (BIO_printf(out, " (%s)", sname) <= 0)
358 return 0;
359 } else {
360 if (BIO_puts(out, sname) <= 0)
361 return 0;
362 }
363 }
364 if (BIO_write(out, ": ", 2) != 2)
365 return 0;
366 return 1;
367}
368
369static int asn1_print_boolean(BIO *out, int boolval)
370{
371 const char *str;
372 switch (boolval) {
373 case -1:
374 str = "BOOL ABSENT";
375 break;
376
377 case 0:
378 str = "FALSE";
379 break;
380
381 default:
382 str = "TRUE";
383 break;
384
385 }
386
387 if (BIO_puts(out, str) <= 0)
388 return 0;
389 return 1;
390
391}
392
393static int asn1_print_integer(BIO *out, const ASN1_INTEGER *str)
394{
395 char *s;
396 int ret = 1;
397 s = i2s_ASN1_INTEGER(NULL, str);
398 if (s == NULL)
399 return 0;
400 if (BIO_puts(out, s) <= 0)
401 ret = 0;
402 OPENSSL_free(s);
403 return ret;
404}
405
406static int asn1_print_oid(BIO *out, const ASN1_OBJECT *oid)
407{
408 char objbuf[80];
409 const char *ln;
410 ln = OBJ_nid2ln(OBJ_obj2nid(oid));
411 if (!ln)
412 ln = "";
413 OBJ_obj2txt(objbuf, sizeof(objbuf), oid, 1);
414 if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
415 return 0;
416 return 1;
417}
418
419static int asn1_print_obstring(BIO *out, const ASN1_STRING *str, int indent)
420{
421 if (str->type == V_ASN1_BIT_STRING) {
422 if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0)
423 return 0;
424 } else if (BIO_puts(out, "\n") <= 0)
425 return 0;
426 if ((str->length > 0)
427 && BIO_dump_indent(out, (const char *)str->data, str->length,
428 indent + 2) <= 0)
429 return 0;
430 return 1;
431}
432
433static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
434 const ASN1_ITEM *it, int indent,
435 const char *fname, const char *sname,
436 const ASN1_PCTX *pctx)
437{
438 long utype;
439 ASN1_STRING *str;
440 int ret = 1, needlf = 1;
441 const char *pname;
442 const ASN1_PRIMITIVE_FUNCS *pf;
443 pf = it->funcs;
444 if (!asn1_print_fsname(out, indent, fname, sname, pctx))
445 return 0;
446 if (pf && pf->prim_print)
447 return pf->prim_print(out, fld, it, indent, pctx);
448 if (it->itype == ASN1_ITYPE_MSTRING) {
449 str = (ASN1_STRING *)*fld;
450 utype = str->type & ~V_ASN1_NEG;
451 } else {
452 utype = it->utype;
453 if (utype == V_ASN1_BOOLEAN)
454 str = NULL;
455 else
456 str = (ASN1_STRING *)*fld;
457 }
458 if (utype == V_ASN1_ANY) {
459 ASN1_TYPE *atype = (ASN1_TYPE *)*fld;
460 utype = atype->type;
461 fld = &atype->value.asn1_value;
462 str = (ASN1_STRING *)*fld;
463 if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
464 pname = NULL;
465 else
466 pname = ASN1_tag2str(utype);
467 } else {
468 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
469 pname = ASN1_tag2str(utype);
470 else
471 pname = NULL;
472 }
473
474 if (utype == V_ASN1_NULL) {
475 if (BIO_puts(out, "NULL\n") <= 0)
476 return 0;
477 return 1;
478 }
479
480 if (pname) {
481 if (BIO_puts(out, pname) <= 0)
482 return 0;
483 if (BIO_puts(out, ":") <= 0)
484 return 0;
485 }
486
487 switch (utype) {
488 case V_ASN1_BOOLEAN:
489 {
490 int boolval = *(int *)fld;
491 if (boolval == -1)
492 boolval = it->size;
493 ret = asn1_print_boolean(out, boolval);
494 }
495 break;
496
497 case V_ASN1_INTEGER:
498 case V_ASN1_ENUMERATED:
499 ret = asn1_print_integer(out, str);
500 break;
501
502 case V_ASN1_UTCTIME:
503 ret = ASN1_UTCTIME_print(out, str);
504 break;
505
506 case V_ASN1_GENERALIZEDTIME:
507 ret = ASN1_GENERALIZEDTIME_print(out, str);
508 break;
509
510 case V_ASN1_OBJECT:
511 ret = asn1_print_oid(out, (const ASN1_OBJECT *)*fld);
512 break;
513
514 case V_ASN1_OCTET_STRING:
515 case V_ASN1_BIT_STRING:
516 ret = asn1_print_obstring(out, str, indent);
517 needlf = 0;
518 break;
519
520 case V_ASN1_SEQUENCE:
521 case V_ASN1_SET:
522 case V_ASN1_OTHER:
523 if (BIO_puts(out, "\n") <= 0)
524 return 0;
525 if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0)
526 ret = 0;
527 needlf = 0;
528 break;
529
530 default:
531 ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
532
533 }
534 if (!ret)
535 return 0;
536 if (needlf && BIO_puts(out, "\n") <= 0)
537 return 0;
538 return 1;
539}
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