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 * A nice addition from Dr Stephen Henson <steve@openssl.org> to add the
60 * -strparse option which parses nested binary structures
67 #include <openssl/err.h>
68 #include <openssl/evp.h>
69 #include <openssl/x509.h>
70 #include <openssl/pem.h>
72 typedef enum OPTION_choice
{
73 OPT_ERR
= -1, OPT_EOF
= 0, OPT_HELP
,
74 OPT_INFORM
, OPT_IN
, OPT_OUT
, OPT_INDENT
, OPT_NOOUT
,
75 OPT_OID
, OPT_OFFSET
, OPT_LENGTH
, OPT_DUMP
, OPT_DLIMIT
,
76 OPT_STRPARSE
, OPT_GENSTR
, OPT_GENCONF
, OPT_STRICTPEM
79 OPTIONS asn1parse_options
[] = {
80 {"help", OPT_HELP
, '-', "Display this summary"},
81 {"inform", OPT_INFORM
, 'F', "input format - one of DER PEM"},
82 {"in", OPT_IN
, '<', "input file"},
83 {"out", OPT_OUT
, '>', "output file (output format is always DER)"},
84 {"i", OPT_INDENT
, 0, "entries"},
85 {"noout", OPT_NOOUT
, 0, "don't produce any output"},
86 {"offset", OPT_OFFSET
, 'p', "offset into file"},
87 {"length", OPT_LENGTH
, 'p', "length of section in file"},
88 {"oid", OPT_OID
, '<', "file of extra oid definitions"},
89 {"dump", OPT_DUMP
, 0, "unknown data in hex form"},
90 {"dlimit", OPT_DLIMIT
, 'p',
91 "dump the first arg bytes of unknown data in hex form"},
92 {"strparse", OPT_STRPARSE
, 's',
93 "offset; a series of these can be used to 'dig'"},
94 {OPT_MORE_STR
, 0, 0, "into multiple ASN1 blob wrappings"},
95 {"genstr", OPT_GENSTR
, 's', "string to generate ASN1 structure from"},
96 {"genconf", OPT_GENCONF
, 's', "file to generate ASN1 structure from"},
97 {OPT_MORE_STR
, 0, 0, "(-inform will be ignored)"},
98 {"strictpem", OPT_STRICTPEM
, 0,
99 "do not attempt base64 decode outside PEM markers"},
103 static int do_generate(char *genstr
, char *genconf
, BUF_MEM
*buf
);
105 int asn1parse_main(int argc
, char **argv
)
107 ASN1_TYPE
*at
= NULL
;
108 BIO
*in
= NULL
, *b64
= NULL
, *derout
= NULL
;
110 STACK_OF(OPENSSL_STRING
) *osk
= NULL
;
111 char *genstr
= NULL
, *genconf
= NULL
;
112 char *infile
= NULL
, *str
= NULL
, *oidfile
= NULL
, *derfile
= NULL
;
113 char *name
= NULL
, *header
= NULL
, *prog
;
114 const unsigned char *ctmpbuf
;
115 int indent
= 0, noout
= 0, dump
= 0, strictpem
= 0, informat
= FORMAT_PEM
;
116 int offset
= 0, ret
= 1, i
, j
;
118 unsigned char *tmpbuf
;
119 unsigned int length
= 0;
122 prog
= opt_init(argc
, argv
, asn1parse_options
);
124 if ((osk
= sk_OPENSSL_STRING_new_null()) == NULL
) {
125 BIO_printf(bio_err
, "%s: Memory allocation failure\n", prog
);
129 while ((o
= opt_next()) != OPT_EOF
) {
134 BIO_printf(bio_err
, "%s: Use -help for summary.\n", prog
);
137 opt_help(asn1parse_options
);
141 if (!opt_format(opt_arg(), OPT_FMT_PEMDER
, &informat
))
160 offset
= strtol(opt_arg(), NULL
, 0);
163 length
= atoi(opt_arg());
169 dump
= atoi(opt_arg());
172 sk_OPENSSL_STRING_push(osk
, opt_arg());
182 informat
= FORMAT_PEM
;
186 argc
= opt_num_rest();
189 if (!app_load_modules(NULL
))
192 if (oidfile
!= NULL
) {
193 in
= bio_open_default(oidfile
, "r");
196 OBJ_create_objects(in
);
200 if ((in
= bio_open_default(infile
, "r")) == NULL
)
203 if (derfile
&& (derout
= bio_open_default(derfile
, "wb")) == NULL
)
207 if (PEM_read_bio(in
, &name
, &header
, (unsigned char **)&str
, &num
) !=
209 BIO_printf(bio_err
, "Error reading PEM file\n");
210 ERR_print_errors(bio_err
);
215 if ((buf
= BUF_MEM_new()) == NULL
)
217 if (!BUF_MEM_grow(buf
, BUFSIZ
* 8))
218 goto end
; /* Pre-allocate :-) */
220 if (genstr
|| genconf
) {
221 num
= do_generate(genstr
, genconf
, buf
);
223 ERR_print_errors(bio_err
);
230 if (informat
== FORMAT_PEM
) {
233 if ((b64
= BIO_new(BIO_f_base64())) == NULL
)
243 if (!BUF_MEM_grow(buf
, (int)num
+ BUFSIZ
))
245 i
= BIO_read(in
, &(buf
->data
[num
]), BUFSIZ
);
255 /* If any structs to parse go through in sequence */
257 if (sk_OPENSSL_STRING_num(osk
)) {
258 tmpbuf
= (unsigned char *)str
;
260 for (i
= 0; i
< sk_OPENSSL_STRING_num(osk
); i
++) {
263 j
= atoi(sk_OPENSSL_STRING_value(osk
, i
));
265 BIO_printf(bio_err
, "'%s' is an invalid number\n",
266 sk_OPENSSL_STRING_value(osk
, i
));
273 at
= d2i_ASN1_TYPE(NULL
, &ctmpbuf
, tmplen
);
274 ASN1_TYPE_free(atmp
);
276 BIO_printf(bio_err
, "Error parsing structure\n");
277 ERR_print_errors(bio_err
);
280 typ
= ASN1_TYPE_get(at
);
281 if ((typ
== V_ASN1_OBJECT
)
282 || (typ
== V_ASN1_NULL
)) {
283 BIO_printf(bio_err
, "Can't parse %s type\n",
284 typ
== V_ASN1_NULL
? "NULL" : "OBJECT");
285 ERR_print_errors(bio_err
);
288 /* hmm... this is a little evil but it works */
289 tmpbuf
= at
->value
.asn1_string
->data
;
290 tmplen
= at
->value
.asn1_string
->length
;
292 str
= (char *)tmpbuf
;
297 BIO_printf(bio_err
, "Error: offset too large\n");
303 if ((length
== 0) || ((long)length
> num
))
304 length
= (unsigned int)num
;
306 if (BIO_write(derout
, str
+ offset
, length
) != (int)length
) {
307 BIO_printf(bio_err
, "Error writing output\n");
308 ERR_print_errors(bio_err
);
313 !ASN1_parse_dump(bio_out
, (unsigned char *)&(str
[offset
]), length
,
315 ERR_print_errors(bio_err
);
324 ERR_print_errors(bio_err
);
327 OPENSSL_free(header
);
331 sk_OPENSSL_STRING_free(osk
);
336 static int do_generate(char *genstr
, char *genconf
, BUF_MEM
*buf
)
341 ASN1_TYPE
*atyp
= NULL
;
344 if ((cnf
= app_load_config(genconf
)) == NULL
)
347 genstr
= NCONF_get_string(cnf
, "default", "asn1");
349 BIO_printf(bio_err
, "Can't find 'asn1' in '%s'\n", genconf
);
354 atyp
= ASN1_generate_nconf(genstr
, cnf
);
361 len
= i2d_ASN1_TYPE(atyp
, NULL
);
366 if (!BUF_MEM_grow(buf
, len
))
369 p
= (unsigned char *)buf
->data
;
371 i2d_ASN1_TYPE(atyp
, &p
);
373 ASN1_TYPE_free(atyp
);
378 ASN1_TYPE_free(atyp
);