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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.]
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; */
131 dump_indent
= indent
;
133 dump_indent
= 6; /* Because we know BIO_dump_indent() */
136 if (depth
> ASN1_PARSE_MAXDEPTH
) {
137 BIO_puts(bp
, "BAD RECURSION DEPTH\n");
144 while ((p
< tot
) && (op
< p
)) {
146 j
= ASN1_get_object(&p
, &len
, &tag
, &xclass
, length
);
151 if (BIO_write(bp
, "Error in encoding\n", 18) <= 0)
159 * if j == 0x21 it is a constructed indefinite length object
161 if (BIO_printf(bp
, "%5ld:", (long)offset
+ (long)(op
- *pp
))
165 if (j
!= (V_ASN1_CONSTRUCTED
| 1)) {
166 if (BIO_printf(bp
, "d=%-2d hl=%ld l=%4ld ",
167 depth
, (long)hl
, len
) <= 0)
170 if (BIO_printf(bp
, "d=%-2d hl=%ld l=inf ", depth
, (long)hl
) <= 0)
173 if (!asn1_print_info(bp
, tag
, xclass
, j
, (indent
) ? depth
: 0))
175 if (j
& V_ASN1_CONSTRUCTED
) {
176 const unsigned char *sp
;
179 if (BIO_write(bp
, "\n", 1) <= 0)
182 BIO_printf(bp
, "length is greater than %ld\n", length
);
186 if ((j
== 0x21) && (len
== 0)) {
189 r
= asn1_parse2(bp
, &p
, (long)(tot
- p
),
190 offset
+ (p
- *pp
), depth
+ 1,
196 if ((r
== 2) || (p
>= tot
)) {
206 r
= asn1_parse2(bp
, &p
, tmp
, offset
+ (p
- *pp
), depth
+ 1,
215 } else if (xclass
!= 0) {
217 if (BIO_write(bp
, "\n", 1) <= 0)
221 if ((tag
== V_ASN1_PRINTABLESTRING
) ||
222 (tag
== V_ASN1_T61STRING
) ||
223 (tag
== V_ASN1_IA5STRING
) ||
224 (tag
== V_ASN1_VISIBLESTRING
) ||
225 (tag
== V_ASN1_NUMERICSTRING
) ||
226 (tag
== V_ASN1_UTF8STRING
) ||
227 (tag
== V_ASN1_UTCTIME
) || (tag
== V_ASN1_GENERALIZEDTIME
)) {
228 if (BIO_write(bp
, ":", 1) <= 0)
230 if ((len
> 0) && BIO_write(bp
, (const char *)p
, (int)len
)
233 } else if (tag
== V_ASN1_OBJECT
) {
235 if (d2i_ASN1_OBJECT(&o
, &opp
, len
+ hl
) != NULL
) {
236 if (BIO_write(bp
, ":", 1) <= 0)
238 i2a_ASN1_OBJECT(bp
, o
);
240 if (BIO_write(bp
, ":BAD OBJECT", 11) <= 0)
243 } else if (tag
== V_ASN1_BOOLEAN
) {
247 ii
= d2i_ASN1_BOOLEAN(NULL
, &opp
, len
+ hl
);
249 if (BIO_write(bp
, "Bad boolean\n", 12) <= 0)
252 BIO_printf(bp
, ":%d", ii
);
253 } else if (tag
== V_ASN1_BMPSTRING
) {
254 /* do the BMP thang */
255 } else if (tag
== V_ASN1_OCTET_STRING
) {
256 int i
, printable
= 1;
259 os
= d2i_ASN1_OCTET_STRING(NULL
, &opp
, len
+ hl
);
260 if (os
!= NULL
&& os
->length
> 0) {
263 * testing whether the octet string is printable
265 for (i
= 0; i
< os
->length
; i
++) {
266 if (((opp
[i
] < ' ') &&
269 (opp
[i
] != '\t')) || (opp
[i
] > '~')) {
275 /* printable string */
277 if (BIO_write(bp
, ":", 1) <= 0)
279 if (BIO_write(bp
, (const char *)opp
, os
->length
) <= 0)
283 * not printable => print octet string as hex dump
286 if (BIO_write(bp
, "[HEX DUMP]:", 11) <= 0)
288 for (i
= 0; i
< os
->length
; i
++) {
289 if (BIO_printf(bp
, "%02X", opp
[i
]) <= 0)
293 /* print the normal dump */
296 if (BIO_write(bp
, "\n", 1) <= 0)
299 if (BIO_dump_indent(bp
,
301 ((dump
== -1 || dump
>
303 length
) ? os
->length
: dump
),
310 M_ASN1_OCTET_STRING_free(os
);
313 } else if (tag
== V_ASN1_INTEGER
) {
318 bs
= d2i_ASN1_INTEGER(NULL
, &opp
, len
+ hl
);
320 if (BIO_write(bp
, ":", 1) <= 0)
322 if (bs
->type
== V_ASN1_NEG_INTEGER
)
323 if (BIO_write(bp
, "-", 1) <= 0)
325 for (i
= 0; i
< bs
->length
; i
++) {
326 if (BIO_printf(bp
, "%02X", bs
->data
[i
]) <= 0)
329 if (bs
->length
== 0) {
330 if (BIO_write(bp
, "00", 2) <= 0)
334 if (BIO_write(bp
, "BAD INTEGER", 11) <= 0)
337 M_ASN1_INTEGER_free(bs
);
338 } else if (tag
== V_ASN1_ENUMERATED
) {
343 bs
= d2i_ASN1_ENUMERATED(NULL
, &opp
, len
+ hl
);
345 if (BIO_write(bp
, ":", 1) <= 0)
347 if (bs
->type
== V_ASN1_NEG_ENUMERATED
)
348 if (BIO_write(bp
, "-", 1) <= 0)
350 for (i
= 0; i
< bs
->length
; i
++) {
351 if (BIO_printf(bp
, "%02X", bs
->data
[i
]) <= 0)
354 if (bs
->length
== 0) {
355 if (BIO_write(bp
, "00", 2) <= 0)
359 if (BIO_write(bp
, "BAD ENUMERATED", 14) <= 0)
362 M_ASN1_ENUMERATED_free(bs
);
363 } else if (len
> 0 && dump
) {
365 if (BIO_write(bp
, "\n", 1) <= 0)
368 if (BIO_dump_indent(bp
, (const char *)p
,
369 ((dump
== -1 || dump
> len
) ? len
: dump
),
376 if (BIO_write(bp
, "\n", 1) <= 0)
380 if ((tag
== V_ASN1_EOC
) && (xclass
== 0)) {
381 ret
= 2; /* End of sequence */
392 M_ASN1_OCTET_STRING_free(os
);
397 const char *ASN1_tag2str(int tag
)
399 static const char *const tag2str
[] = {
401 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
403 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
405 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
407 "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
409 "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
411 "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
413 "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
415 "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
418 if ((tag
== V_ASN1_NEG_INTEGER
) || (tag
== V_ASN1_NEG_ENUMERATED
))
421 if (tag
< 0 || tag
> 30)