1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/buffer.h>
61 #include <openssl/objects.h>
62 #include <openssl/asn1.h>
64 #ifndef ASN1_PARSE_MAXDEPTH
65 #define ASN1_PARSE_MAXDEPTH 128
68 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
70 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
71 int offset, int depth, int indent, int dump);
72 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
75 static const char fmt[] = "%-18s";
79 if (constructed & V_ASN1_CONSTRUCTED)
83 if (BIO_write(bp, p, 6) < 6)
85 BIO_indent(bp, indent, 128);
88 if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
89 BIO_snprintf(str, sizeof str, "priv [ %d ] ", tag);
90 else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
91 BIO_snprintf(str, sizeof str, "cont [ %d ]", tag);
92 else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
93 BIO_snprintf(str, sizeof str, "appl [ %d ]", tag);
95 BIO_snprintf(str, sizeof str, "<ASN1 %d>", tag);
97 p = ASN1_tag2str(tag);
99 if (BIO_printf(bp, fmt, p) <= 0)
106 int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
108 return (asn1_parse2(bp, &pp, len, 0, 0, indent, 0));
111 int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent,
114 return (asn1_parse2(bp, &pp, len, 0, 0, indent, dump));
117 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
118 int offset, int depth, int indent, int dump)
120 const unsigned char *p, *ep, *tot, *op, *opp;
122 int tag, xclass, ret = 0;
124 ASN1_OBJECT *o = NULL;
125 ASN1_OCTET_STRING *os = NULL;
126 /* ASN1_BMPSTRING *bmp=NULL; */
127 int dump_indent, dump_cont = 0;
129 if (depth > ASN1_PARSE_MAXDEPTH) {
130 BIO_puts(bp, "BAD RECURSION DEPTH\n");
134 dump_indent = 6; /* Because we know BIO_dump_indent() */
138 while ((p < tot) && (op < p)) {
140 j = ASN1_get_object(&p, &len, &tag, &xclass, length);
142 if (BIO_write(bp, "Error in encoding\n", 18) <= 0)
150 * if j == 0x21 it is a constructed indefinite length object
152 if (BIO_printf(bp, "%5ld:", (long)offset + (long)(op - *pp))
156 if (j != (V_ASN1_CONSTRUCTED | 1)) {
157 if (BIO_printf(bp, "d=%-2d hl=%ld l=%4ld ",
158 depth, (long)hl, len) <= 0)
161 if (BIO_printf(bp, "d=%-2d hl=%ld l=inf ", depth, (long)hl) <= 0)
164 if (!asn1_print_info(bp, tag, xclass, j, (indent) ? depth : 0))
166 if (j & V_ASN1_CONSTRUCTED) {
168 if (BIO_write(bp, "\n", 1) <= 0)
171 BIO_printf(bp, "length is greater than %ld\n", length);
175 if ((j == 0x21) && (len == 0)) {
177 r = asn1_parse2(bp, &p, (long)(tot - p),
178 offset + (p - *pp), depth + 1,
184 if ((r == 2) || (p >= tot))
189 r = asn1_parse2(bp, &p, (long)len,
190 offset + (p - *pp), depth + 1,
197 } else if (xclass != 0) {
199 if (BIO_write(bp, "\n", 1) <= 0)
203 if ((tag == V_ASN1_PRINTABLESTRING) ||
204 (tag == V_ASN1_T61STRING) ||
205 (tag == V_ASN1_IA5STRING) ||
206 (tag == V_ASN1_VISIBLESTRING) ||
207 (tag == V_ASN1_NUMERICSTRING) ||
208 (tag == V_ASN1_UTF8STRING) ||
209 (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) {
210 if (BIO_write(bp, ":", 1) <= 0)
212 if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
215 } else if (tag == V_ASN1_OBJECT) {
217 if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
218 if (BIO_write(bp, ":", 1) <= 0)
220 i2a_ASN1_OBJECT(bp, o);
222 if (BIO_puts(bp, ":BAD OBJECT") <= 0)
226 } else if (tag == V_ASN1_BOOLEAN) {
228 if (BIO_puts(bp, ":BAD BOOLEAN") <= 0)
232 BIO_printf(bp, ":%u", p[0]);
233 } else if (tag == V_ASN1_BMPSTRING) {
234 /* do the BMP thang */
235 } else if (tag == V_ASN1_OCTET_STRING) {
236 int i, printable = 1;
239 os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
240 if (os != NULL && os->length > 0) {
243 * testing whether the octet string is printable
245 for (i = 0; i < os->length; i++) {
246 if (((opp[i] < ' ') &&
249 (opp[i] != '\t')) || (opp[i] > '~')) {
255 /* printable string */
257 if (BIO_write(bp, ":", 1) <= 0)
259 if (BIO_write(bp, (const char *)opp, os->length) <= 0)
263 * not printable => print octet string as hex dump
266 if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
268 for (i = 0; i < os->length; i++) {
269 if (BIO_printf(bp, "%02X", opp[i]) <= 0)
273 /* print the normal dump */
276 if (BIO_write(bp, "\n", 1) <= 0)
279 if (BIO_dump_indent(bp,
281 ((dump == -1 || dump >
283 length) ? os->length : dump),
289 ASN1_OCTET_STRING_free(os);
291 } else if (tag == V_ASN1_INTEGER) {
296 bs = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
298 if (BIO_write(bp, ":", 1) <= 0)
300 if (bs->type == V_ASN1_NEG_INTEGER)
301 if (BIO_write(bp, "-", 1) <= 0)
303 for (i = 0; i < bs->length; i++) {
304 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
307 if (bs->length == 0) {
308 if (BIO_write(bp, "00", 2) <= 0)
312 if (BIO_puts(bp, ":BAD INTEGER") <= 0)
316 ASN1_INTEGER_free(bs);
317 } else if (tag == V_ASN1_ENUMERATED) {
322 bs = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
324 if (BIO_write(bp, ":", 1) <= 0)
326 if (bs->type == V_ASN1_NEG_ENUMERATED)
327 if (BIO_write(bp, "-", 1) <= 0)
329 for (i = 0; i < bs->length; i++) {
330 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
333 if (bs->length == 0) {
334 if (BIO_write(bp, "00", 2) <= 0)
338 if (BIO_puts(bp, ":BAD ENUMERATED") <= 0)
342 ASN1_ENUMERATED_free(bs);
343 } else if (len > 0 && dump) {
345 if (BIO_write(bp, "\n", 1) <= 0)
348 if (BIO_dump_indent(bp, (const char *)p,
349 ((dump == -1 || dump > len) ? len : dump),
356 const unsigned char *tmp = op + hl;
357 if (BIO_puts(bp, ":[") <= 0)
359 for (i = 0; i < len; i++) {
360 if (BIO_printf(bp, "%02X", tmp[i]) <= 0)
363 if (BIO_puts(bp, "]") <= 0)
368 if (BIO_write(bp, "\n", 1) <= 0)
372 if ((tag == V_ASN1_EOC) && (xclass == 0)) {
373 ret = 2; /* End of sequence */
382 ASN1_OCTET_STRING_free(os);
387 const char *ASN1_tag2str(int tag)
389 static const char *const tag2str[] = {
391 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
393 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
395 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
397 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
399 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
401 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
403 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
405 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
408 if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
411 if (tag < 0 || tag > 30)