2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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
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 "internal/asn1_int.h"
19 #include "asn1_locl.h"
25 /* ASN1_PCTX routines */
27 static ASN1_PCTX default_pctx = {
28 ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */
35 ASN1_PCTX *ASN1_PCTX_new(void)
39 ret = OPENSSL_zalloc(sizeof(*ret));
41 ASN1err(ASN1_F_ASN1_PCTX_NEW, ERR_R_MALLOC_FAILURE);
47 void ASN1_PCTX_free(ASN1_PCTX *p)
52 unsigned long ASN1_PCTX_get_flags(ASN1_PCTX *p)
57 void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
62 unsigned long ASN1_PCTX_get_nm_flags(ASN1_PCTX *p)
67 void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
72 unsigned long ASN1_PCTX_get_cert_flags(ASN1_PCTX *p)
77 void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
79 p->cert_flags = flags;
82 unsigned long ASN1_PCTX_get_oid_flags(ASN1_PCTX *p)
87 void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
92 unsigned long ASN1_PCTX_get_str_flags(ASN1_PCTX *p)
97 void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
102 /* Main print routines */
104 static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
106 const char *fname, const char *sname,
107 int nohdr, const ASN1_PCTX *pctx);
109 int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
110 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
112 static 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);
117 static int asn1_print_fsname(BIO *out, int indent,
118 const char *fname, const char *sname,
119 const ASN1_PCTX *pctx);
121 int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent,
122 const ASN1_ITEM *it, const ASN1_PCTX *pctx)
126 pctx = &default_pctx;
127 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
131 return asn1_item_print_ctx(out, &ifld, indent, it, NULL, sname, 0, pctx);
134 static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
136 const char *fname, const char *sname,
137 int nohdr, const ASN1_PCTX *pctx)
139 const ASN1_TEMPLATE *tt;
140 const ASN1_EXTERN_FUNCS *ef;
142 const ASN1_AUX *aux = it->funcs;
143 ASN1_aux_cb *asn1_cb;
146 if (aux && aux->asn1_cb) {
148 parg.indent = indent;
150 asn1_cb = aux->asn1_cb;
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))
159 if (BIO_puts(out, "<ABSENT>\n") <= 0)
166 case ASN1_ITYPE_PRIMITIVE:
168 if (!asn1_template_print_ctx(out, fld, indent,
169 it->templates, pctx))
174 case ASN1_ITYPE_MSTRING:
175 if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx))
179 case ASN1_ITYPE_EXTERN:
180 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
182 /* Use new style print routine if possible */
184 if (ef && ef->asn1_ex_print) {
185 i = ef->asn1_ex_print(out, fld, indent, "", pctx);
188 if ((i == 2) && (BIO_puts(out, "\n") <= 0))
192 BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
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)
205 tt = it->templates + i;
206 tmpfld = asn1_get_field_ptr(fld, tt);
207 if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
211 case ASN1_ITYPE_SEQUENCE:
212 case ASN1_ITYPE_NDEF_SEQUENCE:
213 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
215 if (fname || sname) {
216 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
217 if (BIO_puts(out, " {\n") <= 0)
220 if (BIO_puts(out, "\n") <= 0)
226 i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
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);
239 tmpfld = asn1_get_field_ptr(fld, seqtt);
240 if (!asn1_template_print_ctx(out, tmpfld,
241 indent + 2, seqtt, pctx))
244 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
245 if (BIO_printf(out, "%*s}\n", indent, "") < 0)
250 i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
257 BIO_printf(out, "Unprocessed type %d\n", it->itype);
264 int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
265 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
268 const char *sname, *fname;
271 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
272 sname = ASN1_ITEM_ptr(tt->item)->sname;
275 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
278 fname = tt->field_name;
281 * If field is embedded then fld needs fixing so it is a pointer to
282 * a pointer to a field.
284 if (flags & ASN1_TFLG_EMBED) {
285 tfld = (ASN1_VALUE *)fld;
289 if (flags & ASN1_TFLG_SK_MASK) {
292 STACK_OF(ASN1_VALUE) *stack;
294 /* SET OF, SEQUENCE OF */
296 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) {
297 if (flags & ASN1_TFLG_SET_OF)
301 if (BIO_printf(out, "%*s%s OF %s {\n",
302 indent, "", tname, tt->field_name) <= 0)
304 } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0)
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))
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,
318 if (!i && BIO_printf(out, "%*s<EMPTY>\n", indent + 2, "") <= 0)
320 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
321 if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
326 return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
327 fname, sname, 0, pctx);
330 static int asn1_print_fsname(BIO *out, int indent,
331 const char *fname, const char *sname,
332 const ASN1_PCTX *pctx)
334 static const char spaces[] = " ";
335 static const int nspaces = sizeof(spaces) - 1;
337 while (indent > nspaces) {
338 if (BIO_write(out, spaces, nspaces) != nspaces)
342 if (BIO_write(out, spaces, indent) != indent)
344 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
346 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
348 if (!sname && !fname)
351 if (BIO_puts(out, fname) <= 0)
356 if (BIO_printf(out, " (%s)", sname) <= 0)
359 if (BIO_puts(out, sname) <= 0)
363 if (BIO_write(out, ": ", 2) != 2)
368 static int asn1_print_boolean(BIO *out, int boolval)
386 if (BIO_puts(out, str) <= 0)
392 static int asn1_print_integer(BIO *out, ASN1_INTEGER *str)
396 s = i2s_ASN1_INTEGER(NULL, str);
399 if (BIO_puts(out, s) <= 0)
405 static int asn1_print_oid(BIO *out, const ASN1_OBJECT *oid)
409 ln = OBJ_nid2ln(OBJ_obj2nid(oid));
412 OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1);
413 if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
418 static int asn1_print_obstring(BIO *out, ASN1_STRING *str, int indent)
420 if (str->type == V_ASN1_BIT_STRING) {
421 if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0)
423 } else if (BIO_puts(out, "\n") <= 0)
425 if ((str->length > 0)
426 && BIO_dump_indent(out, (char *)str->data, str->length,
432 static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
433 const ASN1_ITEM *it, int indent,
434 const char *fname, const char *sname,
435 const ASN1_PCTX *pctx)
439 int ret = 1, needlf = 1;
441 const ASN1_PRIMITIVE_FUNCS *pf;
443 if (!asn1_print_fsname(out, indent, fname, sname, pctx))
445 if (pf && pf->prim_print)
446 return pf->prim_print(out, fld, it, indent, pctx);
447 if (it->itype == ASN1_ITYPE_MSTRING) {
448 str = (ASN1_STRING *)*fld;
449 utype = str->type & ~V_ASN1_NEG;
452 if (utype == V_ASN1_BOOLEAN)
455 str = (ASN1_STRING *)*fld;
457 if (utype == V_ASN1_ANY) {
458 ASN1_TYPE *atype = (ASN1_TYPE *)*fld;
460 fld = &atype->value.asn1_value;
461 str = (ASN1_STRING *)*fld;
462 if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
465 pname = ASN1_tag2str(utype);
467 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
468 pname = ASN1_tag2str(utype);
473 if (utype == V_ASN1_NULL) {
474 if (BIO_puts(out, "NULL\n") <= 0)
480 if (BIO_puts(out, pname) <= 0)
482 if (BIO_puts(out, ":") <= 0)
489 int boolval = *(int *)fld;
492 ret = asn1_print_boolean(out, boolval);
497 case V_ASN1_ENUMERATED:
498 ret = asn1_print_integer(out, str);
502 ret = ASN1_UTCTIME_print(out, str);
505 case V_ASN1_GENERALIZEDTIME:
506 ret = ASN1_GENERALIZEDTIME_print(out, str);
510 ret = asn1_print_oid(out, (const ASN1_OBJECT *)*fld);
513 case V_ASN1_OCTET_STRING:
514 case V_ASN1_BIT_STRING:
515 ret = asn1_print_obstring(out, str, indent);
519 case V_ASN1_SEQUENCE:
522 if (BIO_puts(out, "\n") <= 0)
524 if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0)
530 ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
535 if (needlf && BIO_puts(out, "\n") <= 0)