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 #ifndef ASN1_PARSE_MAXDEPTH
66 #define ASN1_PARSE_MAXDEPTH 128
69 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
71 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
72 int offset, int depth, int indent, int dump);
73 static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
76 static const char fmt[] = "%-18s";
80 if (constructed & V_ASN1_CONSTRUCTED)
84 if (BIO_write(bp, p, 6) < 6)
86 BIO_indent(bp, indent, 128);
89 if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
90 BIO_snprintf(str, sizeof str, "priv [ %d ] ", tag);
91 else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
92 BIO_snprintf(str, sizeof str, "cont [ %d ]", tag);
93 else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
94 BIO_snprintf(str, sizeof str, "appl [ %d ]", tag);
96 BIO_snprintf(str, sizeof str, "<ASN1 %d>", tag);
98 p = ASN1_tag2str(tag);
100 if (BIO_printf(bp, fmt, p) <= 0)
107 int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
109 return (asn1_parse2(bp, &pp, len, 0, 0, indent, 0));
112 int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent,
115 return (asn1_parse2(bp, &pp, len, 0, 0, indent, dump));
118 static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
119 int offset, int depth, int indent, int dump)
121 const unsigned char *p, *ep, *tot, *op, *opp;
123 int tag, xclass, ret = 0;
125 ASN1_OBJECT *o = NULL;
126 ASN1_OCTET_STRING *os = NULL;
127 /* ASN1_BMPSTRING *bmp=NULL; */
130 if (depth > ASN1_PARSE_MAXDEPTH) {
131 BIO_puts(bp, "BAD RECURSION DEPTH\n");
135 dump_indent = 6; /* Because we know BIO_dump_indent() */
139 while ((p < tot) && (op < p)) {
141 j = ASN1_get_object(&p, &len, &tag, &xclass, length);
143 if (BIO_write(bp, "Error in encoding\n", 18) <= 0)
151 * if j == 0x21 it is a constructed indefinite length object
153 if (BIO_printf(bp, "%5ld:", (long)offset + (long)(op - *pp))
157 if (j != (V_ASN1_CONSTRUCTED | 1)) {
158 if (BIO_printf(bp, "d=%-2d hl=%ld l=%4ld ",
159 depth, (long)hl, len) <= 0)
162 if (BIO_printf(bp, "d=%-2d hl=%ld l=inf ", depth, (long)hl) <= 0)
165 if (!asn1_print_info(bp, tag, xclass, j, (indent) ? depth : 0))
167 if (j & V_ASN1_CONSTRUCTED) {
169 if (BIO_write(bp, "\n", 1) <= 0)
172 BIO_printf(bp, "length is greater than %ld\n", length);
176 if ((j == 0x21) && (len == 0)) {
178 r = asn1_parse2(bp, &p, (long)(tot - p),
179 offset + (p - *pp), depth + 1,
185 if ((r == 2) || (p >= tot))
190 r = asn1_parse2(bp, &p, (long)len,
191 offset + (p - *pp), depth + 1,
198 } else if (xclass != 0) {
200 if (BIO_write(bp, "\n", 1) <= 0)
204 if ((tag == V_ASN1_PRINTABLESTRING) ||
205 (tag == V_ASN1_T61STRING) ||
206 (tag == V_ASN1_IA5STRING) ||
207 (tag == V_ASN1_VISIBLESTRING) ||
208 (tag == V_ASN1_NUMERICSTRING) ||
209 (tag == V_ASN1_UTF8STRING) ||
210 (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) {
211 if (BIO_write(bp, ":", 1) <= 0)
213 if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
216 } else if (tag == V_ASN1_OBJECT) {
218 if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
219 if (BIO_write(bp, ":", 1) <= 0)
221 i2a_ASN1_OBJECT(bp, o);
223 if (BIO_write(bp, ":BAD OBJECT", 11) <= 0)
226 } else if (tag == V_ASN1_BOOLEAN) {
228 if (BIO_write(bp, "Bad boolean\n", 12) <= 0)
231 BIO_printf(bp, ":%u", p[0]);
232 } else if (tag == V_ASN1_BMPSTRING) {
233 /* do the BMP thang */
234 } else if (tag == V_ASN1_OCTET_STRING) {
235 int i, printable = 1;
238 os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
239 if (os != NULL && os->length > 0) {
242 * testing whether the octet string is printable
244 for (i = 0; i < os->length; i++) {
245 if (((opp[i] < ' ') &&
248 (opp[i] != '\t')) || (opp[i] > '~')) {
254 /* printable string */
256 if (BIO_write(bp, ":", 1) <= 0)
258 if (BIO_write(bp, (const char *)opp, os->length) <= 0)
262 * not printable => print octet string as hex dump
265 if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
267 for (i = 0; i < os->length; i++) {
268 if (BIO_printf(bp, "%02X", opp[i]) <= 0)
272 /* print the normal dump */
275 if (BIO_write(bp, "\n", 1) <= 0)
278 if (BIO_dump_indent(bp,
280 ((dump == -1 || dump >
282 length) ? os->length : dump),
288 ASN1_OCTET_STRING_free(os);
290 } else if (tag == V_ASN1_INTEGER) {
295 bs = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
297 if (BIO_write(bp, ":", 1) <= 0)
299 if (bs->type == V_ASN1_NEG_INTEGER)
300 if (BIO_write(bp, "-", 1) <= 0)
302 for (i = 0; i < bs->length; i++) {
303 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
306 if (bs->length == 0) {
307 if (BIO_write(bp, "00", 2) <= 0)
311 if (BIO_write(bp, "BAD INTEGER", 11) <= 0)
314 ASN1_INTEGER_free(bs);
315 } else if (tag == V_ASN1_ENUMERATED) {
320 bs = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
322 if (BIO_write(bp, ":", 1) <= 0)
324 if (bs->type == V_ASN1_NEG_ENUMERATED)
325 if (BIO_write(bp, "-", 1) <= 0)
327 for (i = 0; i < bs->length; i++) {
328 if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
331 if (bs->length == 0) {
332 if (BIO_write(bp, "00", 2) <= 0)
336 if (BIO_write(bp, "BAD ENUMERATED", 14) <= 0)
339 ASN1_ENUMERATED_free(bs);
340 } else if (len > 0 && dump) {
342 if (BIO_write(bp, "\n", 1) <= 0)
345 if (BIO_dump_indent(bp, (const char *)p,
346 ((dump == -1 || dump > len) ? len : dump),
353 if (BIO_write(bp, "\n", 1) <= 0)
357 if ((tag == V_ASN1_EOC) && (xclass == 0)) {
358 ret = 2; /* End of sequence */
367 ASN1_OCTET_STRING_free(os);
372 const char *ASN1_tag2str(int tag)
374 static const char *const tag2str[] = {
376 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
378 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
380 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
382 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
384 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
386 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
388 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
390 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
393 if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
396 if (tag < 0 || tag > 30)