1 /* crypto/asn1/asn1_par.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
60 #include "internal/cryptlib.h"
61 #include <openssl/buffer.h>
62 #include <openssl/objects.h>
63 #include <openssl/asn1.h>
65 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
67 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
68 int offset, int depth, int indent, int dump);
69 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
72 static const char fmt[] = "%-18s";
76 if (constructed & V_ASN1_CONSTRUCTED)
80 if (BIO_write(bp, p, 6) < 6)
82 BIO_indent(bp, indent, 128);
85 if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
86 BIO_snprintf(str, sizeof str, "priv [ %d ] ", tag);
87 else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
88 BIO_snprintf(str, sizeof str, "cont [ %d ]", tag);
89 else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
90 BIO_snprintf(str, sizeof str, "appl [ %d ]", tag);
92 BIO_snprintf(str, sizeof str, "<ASN1 %d>", tag);
94 p = ASN1_tag2str(tag);
96 if (BIO_printf(bp, fmt, p) <= 0)
103 int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
105 return (asn1_parse2(bp, &pp, len, 0, 0, indent, 0));
108 int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent,
111 return (asn1_parse2(bp, &pp, len, 0, 0, indent, dump));
114 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
115 int offset, int depth, int indent, int dump)
117 const unsigned char *p, *ep, *tot, *op, *opp;
119 int tag, xclass, ret = 0;
121 ASN1_OBJECT *o = NULL;
122 ASN1_OCTET_STRING *os = NULL;
123 /* ASN1_BMPSTRING *bmp=NULL; */
126 dump_indent = 6; /* Because we know BIO_dump_indent() */
130 while ((p < tot) && (op < p)) {
132 j = ASN1_get_object(&p, &len, &tag, &xclass, length);
134 if (BIO_write(bp, "Error in encoding\n", 18) <= 0)
142 * if j == 0x21 it is a constructed indefinite length object
144 if (BIO_printf(bp, "%5ld:", (long)offset + (long)(op - *pp))
148 if (j != (V_ASN1_CONSTRUCTED | 1)) {
149 if (BIO_printf(bp, "d=%-2d hl=%ld l=%4ld ",
150 depth, (long)hl, len) <= 0)
153 if (BIO_printf(bp, "d=%-2d hl=%ld l=inf ", depth, (long)hl) <= 0)
156 if (!asn1_print_info(bp, tag, xclass, j, (indent) ? depth : 0))
158 if (j & V_ASN1_CONSTRUCTED) {
160 if (BIO_write(bp, "\n", 1) <= 0)
163 BIO_printf(bp, "length is greater than %ld\n", length);
167 if ((j == 0x21) && (len == 0)) {
169 r = asn1_parse2(bp, &p, (long)(tot - p),
170 offset + (p - *pp), depth + 1,
176 if ((r == 2) || (p >= tot))
181 r = asn1_parse2(bp, &p, (long)len,
182 offset + (p - *pp), depth + 1,
189 } else if (xclass != 0) {
191 if (BIO_write(bp, "\n", 1) <= 0)
195 if ((tag == V_ASN1_PRINTABLESTRING) ||
196 (tag == V_ASN1_T61STRING) ||
197 (tag == V_ASN1_IA5STRING) ||
198 (tag == V_ASN1_VISIBLESTRING) ||
199 (tag == V_ASN1_NUMERICSTRING) ||
200 (tag == V_ASN1_UTF8STRING) ||
201 (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) {
202 if (BIO_write(bp, ":", 1) <= 0)
204 if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
207 } else if (tag == V_ASN1_OBJECT) {
209 if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
210 if (BIO_write(bp, ":", 1) <= 0)
212 i2a_ASN1_OBJECT(bp, o);
214 if (BIO_write(bp, ":BAD OBJECT", 11) <= 0)
217 } else if (tag == V_ASN1_BOOLEAN) {
219 if (BIO_write(bp, "Bad boolean\n", 12) <= 0)
222 BIO_printf(bp, ":%u", p[0]);
223 } else if (tag == V_ASN1_BMPSTRING) {
224 /* do the BMP thang */
225 } else if (tag == V_ASN1_OCTET_STRING) {
226 int i, printable = 1;
229 os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
230 if (os != NULL && os->length > 0) {
233 * testing whether the octet string is printable
235 for (i = 0; i < os->length; i++) {
236 if (((opp[i] < ' ') &&
239 (opp[i] != '\t')) || (opp[i] > '~')) {
245 /* printable string */
247 if (BIO_write(bp, ":", 1) <= 0)
249 if (BIO_write(bp, (const char *)opp, os->length) <= 0)
253 * not printable => print octet string as hex dump
256 if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
258 for (i = 0; i < os->length; i++) {
259 if (BIO_printf(bp, "%02X", opp[i]) <= 0)
263 /* print the normal dump */
266 if (BIO_write(bp, "\n", 1) <= 0)
269 if (BIO_dump_indent(bp,
271 ((dump == -1 || dump >
273 length) ? os->length : dump),
279 ASN1_OCTET_STRING_free(os);
281 } else if (tag == V_ASN1_INTEGER) {
286 bs = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
288 if (BIO_write(bp, ":", 1) <= 0)
290 if (bs->type == V_ASN1_NEG_INTEGER)
291 if (BIO_write(bp, "-", 1) <= 0)
293 for (i = 0; i < bs->length; i++) {
294 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
297 if (bs->length == 0) {
298 if (BIO_write(bp, "00", 2) <= 0)
302 if (BIO_write(bp, "BAD INTEGER", 11) <= 0)
305 ASN1_INTEGER_free(bs);
306 } else if (tag == V_ASN1_ENUMERATED) {
311 bs = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
313 if (BIO_write(bp, ":", 1) <= 0)
315 if (bs->type == V_ASN1_NEG_ENUMERATED)
316 if (BIO_write(bp, "-", 1) <= 0)
318 for (i = 0; i < bs->length; i++) {
319 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
322 if (bs->length == 0) {
323 if (BIO_write(bp, "00", 2) <= 0)
327 if (BIO_write(bp, "BAD ENUMERATED", 14) <= 0)
330 ASN1_ENUMERATED_free(bs);
331 } else if (len > 0 && dump) {
333 if (BIO_write(bp, "\n", 1) <= 0)
336 if (BIO_dump_indent(bp, (const char *)p,
337 ((dump == -1 || dump > len) ? len : dump),
344 if (BIO_write(bp, "\n", 1) <= 0)
348 if ((tag == V_ASN1_EOC) && (xclass == 0)) {
349 ret = 2; /* End of sequence */
358 ASN1_OCTET_STRING_free(os);
363 const char *ASN1_tag2str(int tag)
365 static const char *const tag2str[] = {
367 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
369 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
371 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
373 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
375 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
377 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
379 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
381 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
384 if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
387 if (tag < 0 || tag > 30)