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;
155 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) {
156 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
158 if (BIO_puts(out, "<ABSENT>\n") <= 0)
165 case ASN1_ITYPE_PRIMITIVE:
167 if (!asn1_template_print_ctx(out, fld, indent,
168 it->templates, pctx))
173 case ASN1_ITYPE_MSTRING:
174 if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx))
178 case ASN1_ITYPE_EXTERN:
179 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
181 /* Use new style print routine if possible */
183 if (ef && ef->asn1_ex_print) {
184 i = ef->asn1_ex_print(out, fld, indent, "", pctx);
187 if ((i == 2) && (BIO_puts(out, "\n") <= 0))
191 BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
195 case ASN1_ITYPE_CHOICE:
196 /* CHOICE type, get selector */
197 i = asn1_get_choice_selector(fld, it);
198 /* This should never happen... */
199 if ((i < 0) || (i >= it->tcount)) {
200 if (BIO_printf(out, "ERROR: selector [%d] invalid\n", i) <= 0)
204 tt = it->templates + i;
205 tmpfld = asn1_get_field_ptr(fld, tt);
206 if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
210 case ASN1_ITYPE_SEQUENCE:
211 case ASN1_ITYPE_NDEF_SEQUENCE:
212 if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
214 if (fname || sname) {
215 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
216 if (BIO_puts(out, " {\n") <= 0)
219 if (BIO_puts(out, "\n") <= 0)
225 i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
232 /* Print each field entry */
233 for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
234 const ASN1_TEMPLATE *seqtt;
235 seqtt = asn1_do_adb(fld, tt, 1);
238 tmpfld = asn1_get_field_ptr(fld, seqtt);
239 if (!asn1_template_print_ctx(out, tmpfld,
240 indent + 2, seqtt, pctx))
243 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
244 if (BIO_printf(out, "%*s}\n", indent, "") < 0)
249 i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
256 BIO_printf(out, "Unprocessed type %d\n", it->itype);
263 int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
264 const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
267 const char *sname, *fname;
270 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
271 sname = ASN1_ITEM_ptr(tt->item)->sname;
274 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
277 fname = tt->field_name;
280 * If field is embedded then fld needs fixing so it is a pointer to
281 * a pointer to a field.
283 if (flags & ASN1_TFLG_EMBED) {
284 tfld = (ASN1_VALUE *)fld;
288 if (flags & ASN1_TFLG_SK_MASK) {
291 STACK_OF(ASN1_VALUE) *stack;
293 /* SET OF, SEQUENCE OF */
295 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) {
296 if (flags & ASN1_TFLG_SET_OF)
300 if (BIO_printf(out, "%*s%s OF %s {\n",
301 indent, "", tname, tt->field_name) <= 0)
303 } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0)
306 stack = (STACK_OF(ASN1_VALUE) *)*fld;
307 for (i = 0; i < sk_ASN1_VALUE_num(stack); i++) {
308 if ((i > 0) && (BIO_puts(out, "\n") <= 0))
311 skitem = sk_ASN1_VALUE_value(stack, i);
312 if (!asn1_item_print_ctx(out, &skitem, indent + 2,
313 ASN1_ITEM_ptr(tt->item), NULL, NULL, 1,
317 if (!i && BIO_printf(out, "%*s<EMPTY>\n", indent + 2, "") <= 0)
319 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
320 if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
325 return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
326 fname, sname, 0, pctx);
329 static int asn1_print_fsname(BIO *out, int indent,
330 const char *fname, const char *sname,
331 const ASN1_PCTX *pctx)
333 static const char spaces[] = " ";
334 static const int nspaces = sizeof(spaces) - 1;
336 while (indent > nspaces) {
337 if (BIO_write(out, spaces, nspaces) != nspaces)
341 if (BIO_write(out, spaces, indent) != indent)
343 if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
345 if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
347 if (!sname && !fname)
350 if (BIO_puts(out, fname) <= 0)
355 if (BIO_printf(out, " (%s)", sname) <= 0)
358 if (BIO_puts(out, sname) <= 0)
362 if (BIO_write(out, ": ", 2) != 2)
367 static int asn1_print_boolean(BIO *out, int boolval)
385 if (BIO_puts(out, str) <= 0)
391 static int asn1_print_integer(BIO *out, ASN1_INTEGER *str)
395 s = i2s_ASN1_INTEGER(NULL, str);
396 if (BIO_puts(out, s) <= 0)
402 static int asn1_print_oid(BIO *out, const ASN1_OBJECT *oid)
406 ln = OBJ_nid2ln(OBJ_obj2nid(oid));
409 OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1);
410 if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
415 static int asn1_print_obstring(BIO *out, ASN1_STRING *str, int indent)
417 if (str->type == V_ASN1_BIT_STRING) {
418 if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0)
420 } else if (BIO_puts(out, "\n") <= 0)
422 if ((str->length > 0)
423 && BIO_dump_indent(out, (char *)str->data, str->length,
429 static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
430 const ASN1_ITEM *it, int indent,
431 const char *fname, const char *sname,
432 const ASN1_PCTX *pctx)
436 int ret = 1, needlf = 1;
438 const ASN1_PRIMITIVE_FUNCS *pf;
440 if (!asn1_print_fsname(out, indent, fname, sname, pctx))
442 if (pf && pf->prim_print)
443 return pf->prim_print(out, fld, it, indent, pctx);
444 str = (ASN1_STRING *)*fld;
445 if (it->itype == ASN1_ITYPE_MSTRING)
446 utype = str->type & ~V_ASN1_NEG;
449 if (utype == V_ASN1_ANY) {
450 ASN1_TYPE *atype = (ASN1_TYPE *)*fld;
452 fld = &atype->value.asn1_value;
453 str = (ASN1_STRING *)*fld;
454 if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
457 pname = ASN1_tag2str(utype);
459 if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
460 pname = ASN1_tag2str(utype);
465 if (utype == V_ASN1_NULL) {
466 if (BIO_puts(out, "NULL\n") <= 0)
472 if (BIO_puts(out, pname) <= 0)
474 if (BIO_puts(out, ":") <= 0)
481 int boolval = *(int *)fld;
484 ret = asn1_print_boolean(out, boolval);
489 case V_ASN1_ENUMERATED:
490 ret = asn1_print_integer(out, str);
494 ret = ASN1_UTCTIME_print(out, str);
497 case V_ASN1_GENERALIZEDTIME:
498 ret = ASN1_GENERALIZEDTIME_print(out, str);
502 ret = asn1_print_oid(out, (const ASN1_OBJECT *)*fld);
505 case V_ASN1_OCTET_STRING:
506 case V_ASN1_BIT_STRING:
507 ret = asn1_print_obstring(out, str, indent);
511 case V_ASN1_SEQUENCE:
514 if (BIO_puts(out, "\n") <= 0)
516 if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0)
522 ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
527 if (needlf && BIO_puts(out, "\n") <= 0)