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 * A nice addition from Dr Stephen Henson <steve@openssl.org> to add the
61 * -strparse option which parses nested binary structures
68 #include <openssl/err.h>
69 #include <openssl/evp.h>
70 #include <openssl/x509.h>
71 #include <openssl/pem.h>
74 * -inform arg - input format - default PEM (DER or PEM)
75 * -in arg - input file - default stdin
76 * -i - indent the details by depth
77 * -offset - where in the file to start
78 * -length - how many bytes to use
79 * -oid file - extra oid description file
83 #define PROG asn1parse_main
85 int MAIN(int, char **);
87 static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf);
89 int MAIN(int argc, char **argv)
91 int i, badops = 0, offset = 0, ret = 1, j;
92 unsigned int length = 0;
94 BIO *in = NULL, *out = NULL, *b64 = NULL, *derout = NULL;
95 int informat, indent = 0, noout = 0, dump = 0;
96 char *infile = NULL, *str = NULL, *prog, *oidfile = NULL, *derfile = NULL;
97 char *genstr = NULL, *genconf = NULL;
98 unsigned char *tmpbuf;
99 const unsigned char *ctmpbuf;
101 STACK_OF(OPENSSL_STRING) *osk = NULL;
102 ASN1_TYPE *at = NULL;
104 informat = FORMAT_PEM;
109 if ((bio_err = BIO_new(BIO_s_file())) != NULL)
110 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
112 if (!load_config(bio_err, NULL))
118 if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
119 BIO_printf(bio_err, "Memory allocation failure\n");
123 if (strcmp(*argv, "-inform") == 0) {
126 informat = str2fmt(*(++argv));
127 } else if (strcmp(*argv, "-in") == 0) {
131 } else if (strcmp(*argv, "-out") == 0) {
135 } else if (strcmp(*argv, "-i") == 0) {
137 } else if (strcmp(*argv, "-noout") == 0)
139 else if (strcmp(*argv, "-oid") == 0) {
143 } else if (strcmp(*argv, "-offset") == 0) {
146 offset = atoi(*(++argv));
147 } else if (strcmp(*argv, "-length") == 0) {
150 length = atoi(*(++argv));
153 } else if (strcmp(*argv, "-dump") == 0) {
155 } else if (strcmp(*argv, "-dlimit") == 0) {
158 dump = atoi(*(++argv));
161 } else if (strcmp(*argv, "-strparse") == 0) {
164 sk_OPENSSL_STRING_push(osk, *(++argv));
165 } else if (strcmp(*argv, "-genstr") == 0) {
169 } else if (strcmp(*argv, "-genconf") == 0) {
174 BIO_printf(bio_err, "unknown option %s\n", *argv);
184 BIO_printf(bio_err, "%s [options] <infile\n", prog);
185 BIO_printf(bio_err, "where options are\n");
186 BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
187 BIO_printf(bio_err, " -in arg input file\n");
189 " -out arg output file (output format is always DER\n");
190 BIO_printf(bio_err, " -noout arg don't produce any output\n");
191 BIO_printf(bio_err, " -offset arg offset into file\n");
192 BIO_printf(bio_err, " -length arg length of section in file\n");
193 BIO_printf(bio_err, " -i indent entries\n");
194 BIO_printf(bio_err, " -dump dump unknown data in hex form\n");
196 " -dlimit arg dump the first arg bytes of unknown data in hex form\n");
197 BIO_printf(bio_err, " -oid file file of extra oid definitions\n");
198 BIO_printf(bio_err, " -strparse offset\n");
200 " a series of these can be used to 'dig' into multiple\n");
201 BIO_printf(bio_err, " ASN1 blob wrappings\n");
203 " -genstr str string to generate ASN1 structure from\n");
205 " -genconf file file to generate ASN1 structure from\n");
209 ERR_load_crypto_strings();
211 in = BIO_new(BIO_s_file());
212 out = BIO_new(BIO_s_file());
213 if ((in == NULL) || (out == NULL)) {
214 ERR_print_errors(bio_err);
217 BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
218 #ifdef OPENSSL_SYS_VMS
220 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
221 out = BIO_push(tmpbio, out);
225 if (oidfile != NULL) {
226 if (BIO_read_filename(in, oidfile) <= 0) {
227 BIO_printf(bio_err, "problems opening %s\n", oidfile);
228 ERR_print_errors(bio_err);
231 OBJ_create_objects(in);
235 BIO_set_fp(in, stdin, BIO_NOCLOSE);
237 if (BIO_read_filename(in, infile) <= 0) {
244 if (!(derout = BIO_new_file(derfile, "wb"))) {
245 BIO_printf(bio_err, "problems opening %s\n", derfile);
246 ERR_print_errors(bio_err);
251 if ((buf = BUF_MEM_new()) == NULL)
253 if (!BUF_MEM_grow(buf, BUFSIZ * 8))
254 goto end; /* Pre-allocate :-) */
256 if (genstr || genconf) {
257 num = do_generate(bio_err, genstr, genconf, buf);
259 ERR_print_errors(bio_err);
266 if (informat == FORMAT_PEM) {
269 if ((b64 = BIO_new(BIO_f_base64())) == NULL)
279 if (!BUF_MEM_grow(buf, (int)num + BUFSIZ))
281 i = BIO_read(in, &(buf->data[num]), BUFSIZ);
289 /* If any structs to parse go through in sequence */
291 if (sk_OPENSSL_STRING_num(osk)) {
292 tmpbuf = (unsigned char *)str;
294 for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
297 j = atoi(sk_OPENSSL_STRING_value(osk, i));
299 BIO_printf(bio_err, "'%s' is an invalid number\n",
300 sk_OPENSSL_STRING_value(osk, i));
307 at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
308 ASN1_TYPE_free(atmp);
310 BIO_printf(bio_err, "Error parsing structure\n");
311 ERR_print_errors(bio_err);
314 typ = ASN1_TYPE_get(at);
315 if ((typ == V_ASN1_OBJECT)
316 || (typ == V_ASN1_BOOLEAN)
317 || (typ == V_ASN1_NULL)) {
318 BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
319 ERR_print_errors(bio_err);
322 /* hmm... this is a little evil but it works */
323 tmpbuf = at->value.asn1_string->data;
324 tmplen = at->value.asn1_string->length;
326 str = (char *)tmpbuf;
331 BIO_printf(bio_err, "Error: offset too large\n");
337 if ((length == 0) || ((long)length > num))
338 length = (unsigned int)num;
340 if (BIO_write(derout, str + offset, length) != (int)length) {
341 BIO_printf(bio_err, "Error writing output\n");
342 ERR_print_errors(bio_err);
347 !ASN1_parse_dump(out, (unsigned char *)&(str[offset]), length,
349 ERR_print_errors(bio_err);
362 ERR_print_errors(bio_err);
368 sk_OPENSSL_STRING_free(osk);
374 static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
380 ASN1_TYPE *atyp = NULL;
383 cnf = NCONF_new(NULL);
384 if (!NCONF_load(cnf, genconf, &errline))
387 genstr = NCONF_get_string(cnf, "default", "asn1");
389 BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf);
394 atyp = ASN1_generate_nconf(genstr, cnf);
401 len = i2d_ASN1_TYPE(atyp, NULL);
406 if (!BUF_MEM_grow(buf, len))
409 p = (unsigned char *)buf->data;
411 i2d_ASN1_TYPE(atyp, &p);
413 ASN1_TYPE_free(atyp);
419 BIO_printf(bio, "Error on line %ld of config file '%s'\n",
422 BIO_printf(bio, "Error loading config file '%s'\n", genconf);
426 ASN1_TYPE_free(atyp);