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d02b48c6 | 1 | /* apps/asn1pars.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
40720ce3 | 8 | * |
d02b48c6 RE |
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). | |
40720ce3 | 15 | * |
d02b48c6 RE |
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. | |
40720ce3 | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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 :-). | |
40720ce3 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40720ce3 | 40 | * |
d02b48c6 RE |
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 | |
51 | * SUCH DAMAGE. | |
40720ce3 | 52 | * |
d02b48c6 RE |
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.] | |
57 | */ | |
58 | ||
40720ce3 MC |
59 | /* |
60 | * A nice addition from Dr Stephen Henson <steve@openssl.org> to add the | |
61 | * -strparse option which parses nested binary structures | |
dfeab068 RE |
62 | */ |
63 | ||
d02b48c6 RE |
64 | #include <stdio.h> |
65 | #include <stdlib.h> | |
66 | #include <string.h> | |
67 | #include "apps.h" | |
ec577822 BM |
68 | #include <openssl/err.h> |
69 | #include <openssl/evp.h> | |
70 | #include <openssl/x509.h> | |
71 | #include <openssl/pem.h> | |
d02b48c6 | 72 | |
b558c8d5 | 73 | /*- |
40720ce3 MC |
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 | |
d02b48c6 RE |
80 | */ |
81 | ||
82 | #undef PROG | |
40720ce3 | 83 | #define PROG asn1parse_main |
d02b48c6 | 84 | |
667ac4ec RE |
85 | int MAIN(int, char **); |
86 | ||
9ea1b878 DSH |
87 | static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf); |
88 | ||
6b691a5c | 89 | int MAIN(int argc, char **argv) |
40720ce3 MC |
90 | { |
91 | int i, badops = 0, offset = 0, ret = 1, j; | |
92 | unsigned int length = 0; | |
93 | long num, tmplen; | |
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; | |
100 | BUF_MEM *buf = NULL; | |
101 | STACK *osk = NULL; | |
102 | ASN1_TYPE *at = NULL; | |
103 | ||
104 | informat = FORMAT_PEM; | |
105 | ||
106 | apps_startup(); | |
107 | ||
108 | if (bio_err == NULL) | |
109 | if ((bio_err = BIO_new(BIO_s_file())) != NULL) | |
110 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); | |
111 | ||
112 | if (!load_config(bio_err, NULL)) | |
113 | goto end; | |
114 | ||
115 | prog = argv[0]; | |
116 | argc--; | |
117 | argv++; | |
118 | if ((osk = sk_new_null()) == NULL) { | |
119 | BIO_printf(bio_err, "Memory allocation failure\n"); | |
120 | goto end; | |
121 | } | |
122 | while (argc >= 1) { | |
123 | if (strcmp(*argv, "-inform") == 0) { | |
124 | if (--argc < 1) | |
125 | goto bad; | |
126 | informat = str2fmt(*(++argv)); | |
127 | } else if (strcmp(*argv, "-in") == 0) { | |
128 | if (--argc < 1) | |
129 | goto bad; | |
130 | infile = *(++argv); | |
131 | } else if (strcmp(*argv, "-out") == 0) { | |
132 | if (--argc < 1) | |
133 | goto bad; | |
134 | derfile = *(++argv); | |
135 | } else if (strcmp(*argv, "-i") == 0) { | |
136 | indent = 1; | |
137 | } else if (strcmp(*argv, "-noout") == 0) | |
138 | noout = 1; | |
139 | else if (strcmp(*argv, "-oid") == 0) { | |
140 | if (--argc < 1) | |
141 | goto bad; | |
142 | oidfile = *(++argv); | |
143 | } else if (strcmp(*argv, "-offset") == 0) { | |
144 | if (--argc < 1) | |
145 | goto bad; | |
146 | offset = atoi(*(++argv)); | |
147 | } else if (strcmp(*argv, "-length") == 0) { | |
148 | if (--argc < 1) | |
149 | goto bad; | |
150 | length = atoi(*(++argv)); | |
151 | if (length == 0) | |
152 | goto bad; | |
153 | } else if (strcmp(*argv, "-dump") == 0) { | |
154 | dump = -1; | |
155 | } else if (strcmp(*argv, "-dlimit") == 0) { | |
156 | if (--argc < 1) | |
157 | goto bad; | |
158 | dump = atoi(*(++argv)); | |
159 | if (dump <= 0) | |
160 | goto bad; | |
161 | } else if (strcmp(*argv, "-strparse") == 0) { | |
162 | if (--argc < 1) | |
163 | goto bad; | |
164 | sk_push(osk, *(++argv)); | |
165 | } else if (strcmp(*argv, "-genstr") == 0) { | |
166 | if (--argc < 1) | |
167 | goto bad; | |
168 | genstr = *(++argv); | |
169 | } else if (strcmp(*argv, "-genconf") == 0) { | |
170 | if (--argc < 1) | |
171 | goto bad; | |
172 | genconf = *(++argv); | |
173 | } else { | |
174 | BIO_printf(bio_err, "unknown option %s\n", *argv); | |
175 | badops = 1; | |
176 | break; | |
177 | } | |
178 | argc--; | |
179 | argv++; | |
180 | } | |
181 | ||
182 | if (badops) { | |
183 | bad: | |
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"); | |
188 | BIO_printf(bio_err, | |
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"); | |
195 | BIO_printf(bio_err, | |
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"); | |
199 | BIO_printf(bio_err, | |
200 | " a series of these can be used to 'dig' into multiple\n"); | |
201 | BIO_printf(bio_err, " ASN1 blob wrappings\n"); | |
202 | BIO_printf(bio_err, | |
203 | " -genstr str string to generate ASN1 structure from\n"); | |
204 | BIO_printf(bio_err, | |
205 | " -genconf file file to generate ASN1 structure from\n"); | |
206 | goto end; | |
207 | } | |
208 | ||
209 | ERR_load_crypto_strings(); | |
210 | ||
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); | |
215 | goto end; | |
216 | } | |
217 | BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT); | |
bc36ee62 | 218 | #ifdef OPENSSL_SYS_VMS |
40720ce3 MC |
219 | { |
220 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); | |
221 | out = BIO_push(tmpbio, out); | |
222 | } | |
645749ef | 223 | #endif |
58964a49 | 224 | |
40720ce3 MC |
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); | |
229 | goto end; | |
230 | } | |
231 | OBJ_create_objects(in); | |
232 | } | |
233 | ||
234 | if (infile == NULL) | |
235 | BIO_set_fp(in, stdin, BIO_NOCLOSE); | |
236 | else { | |
237 | if (BIO_read_filename(in, infile) <= 0) { | |
238 | perror(infile); | |
239 | goto end; | |
240 | } | |
241 | } | |
242 | ||
243 | if (derfile) { | |
244 | if (!(derout = BIO_new_file(derfile, "wb"))) { | |
245 | BIO_printf(bio_err, "problems opening %s\n", derfile); | |
246 | ERR_print_errors(bio_err); | |
247 | goto end; | |
248 | } | |
249 | } | |
250 | ||
251 | if ((buf = BUF_MEM_new()) == NULL) | |
252 | goto end; | |
253 | if (!BUF_MEM_grow(buf, BUFSIZ * 8)) | |
254 | goto end; /* Pre-allocate :-) */ | |
255 | ||
256 | if (genstr || genconf) { | |
257 | num = do_generate(bio_err, genstr, genconf, buf); | |
258 | if (num < 0) { | |
259 | ERR_print_errors(bio_err); | |
260 | goto end; | |
261 | } | |
262 | } | |
263 | ||
264 | else { | |
265 | ||
266 | if (informat == FORMAT_PEM) { | |
267 | BIO *tmp; | |
268 | ||
269 | if ((b64 = BIO_new(BIO_f_base64())) == NULL) | |
270 | goto end; | |
271 | BIO_push(b64, in); | |
272 | tmp = in; | |
273 | in = b64; | |
274 | b64 = tmp; | |
275 | } | |
276 | ||
277 | num = 0; | |
278 | for (;;) { | |
279 | if (!BUF_MEM_grow(buf, (int)num + BUFSIZ)) | |
280 | goto end; | |
281 | i = BIO_read(in, &(buf->data[num]), BUFSIZ); | |
282 | if (i <= 0) | |
283 | break; | |
284 | num += i; | |
285 | } | |
286 | } | |
287 | str = buf->data; | |
288 | ||
289 | /* If any structs to parse go through in sequence */ | |
290 | ||
291 | if (sk_num(osk)) { | |
292 | tmpbuf = (unsigned char *)str; | |
293 | tmplen = num; | |
294 | for (i = 0; i < sk_num(osk); i++) { | |
295 | ASN1_TYPE *atmp; | |
296 | int typ; | |
297 | j = atoi(sk_value(osk, i)); | |
298 | if (j == 0) { | |
299 | BIO_printf(bio_err, "'%s' is an invalid number\n", | |
300 | sk_value(osk, i)); | |
301 | continue; | |
302 | } | |
303 | tmpbuf += j; | |
304 | tmplen -= j; | |
305 | atmp = at; | |
306 | ctmpbuf = tmpbuf; | |
307 | at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen); | |
308 | ASN1_TYPE_free(atmp); | |
309 | if (!at) { | |
310 | BIO_printf(bio_err, "Error parsing structure\n"); | |
311 | ERR_print_errors(bio_err); | |
312 | goto end; | |
313 | } | |
314 | typ = ASN1_TYPE_get(at); | |
315 | if ((typ == V_ASN1_OBJECT) | |
cc21b51a | 316 | || (typ == V_ASN1_BOOLEAN) |
40720ce3 | 317 | || (typ == V_ASN1_NULL)) { |
cc21b51a | 318 | BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ)); |
40720ce3 MC |
319 | ERR_print_errors(bio_err); |
320 | goto end; | |
321 | } | |
322 | /* hmm... this is a little evil but it works */ | |
323 | tmpbuf = at->value.asn1_string->data; | |
324 | tmplen = at->value.asn1_string->length; | |
325 | } | |
326 | str = (char *)tmpbuf; | |
327 | num = tmplen; | |
328 | } | |
329 | ||
330 | if (offset >= num) { | |
331 | BIO_printf(bio_err, "Error: offset too large\n"); | |
332 | goto end; | |
333 | } | |
334 | ||
335 | num -= offset; | |
336 | ||
337 | if ((length == 0) || ((long)length > num)) | |
338 | length = (unsigned int)num; | |
339 | if (derout) { | |
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); | |
343 | goto end; | |
344 | } | |
345 | } | |
346 | if (!noout && | |
347 | !ASN1_parse_dump(out, (unsigned char *)&(str[offset]), length, | |
348 | indent, dump)) { | |
349 | ERR_print_errors(bio_err); | |
350 | goto end; | |
351 | } | |
352 | ret = 0; | |
353 | end: | |
354 | BIO_free(derout); | |
355 | if (in != NULL) | |
356 | BIO_free(in); | |
357 | if (out != NULL) | |
358 | BIO_free_all(out); | |
359 | if (b64 != NULL) | |
360 | BIO_free(b64); | |
361 | if (ret != 0) | |
362 | ERR_print_errors(bio_err); | |
363 | if (buf != NULL) | |
364 | BUF_MEM_free(buf); | |
365 | if (at != NULL) | |
366 | ASN1_TYPE_free(at); | |
367 | if (osk != NULL) | |
368 | sk_free(osk); | |
369 | OBJ_cleanup(); | |
370 | apps_shutdown(); | |
371 | OPENSSL_EXIT(ret); | |
372 | } | |
d02b48c6 | 373 | |
9ea1b878 | 374 | static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf) |
40720ce3 MC |
375 | { |
376 | CONF *cnf = NULL; | |
377 | int len; | |
378 | long errline; | |
379 | unsigned char *p; | |
380 | ASN1_TYPE *atyp = NULL; | |
9ea1b878 | 381 | |
40720ce3 MC |
382 | if (genconf) { |
383 | cnf = NCONF_new(NULL); | |
384 | if (!NCONF_load(cnf, genconf, &errline)) | |
385 | goto conferr; | |
386 | if (!genstr) | |
387 | genstr = NCONF_get_string(cnf, "default", "asn1"); | |
388 | if (!genstr) { | |
389 | BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf); | |
390 | goto err; | |
391 | } | |
392 | } | |
9ea1b878 | 393 | |
40720ce3 MC |
394 | atyp = ASN1_generate_nconf(genstr, cnf); |
395 | NCONF_free(cnf); | |
396 | cnf = NULL; | |
9ea1b878 | 397 | |
40720ce3 MC |
398 | if (!atyp) |
399 | return -1; | |
9ea1b878 | 400 | |
40720ce3 | 401 | len = i2d_ASN1_TYPE(atyp, NULL); |
9ea1b878 | 402 | |
40720ce3 MC |
403 | if (len <= 0) |
404 | goto err; | |
9ea1b878 | 405 | |
40720ce3 MC |
406 | if (!BUF_MEM_grow(buf, len)) |
407 | goto err; | |
9ea1b878 | 408 | |
40720ce3 | 409 | p = (unsigned char *)buf->data; |
9ea1b878 | 410 | |
40720ce3 | 411 | i2d_ASN1_TYPE(atyp, &p); |
9ea1b878 | 412 | |
40720ce3 MC |
413 | ASN1_TYPE_free(atyp); |
414 | return len; | |
9ea1b878 | 415 | |
40720ce3 | 416 | conferr: |
9ea1b878 | 417 | |
40720ce3 MC |
418 | if (errline > 0) |
419 | BIO_printf(bio, "Error on line %ld of config file '%s'\n", | |
420 | errline, genconf); | |
421 | else | |
422 | BIO_printf(bio, "Error loading config file '%s'\n", genconf); | |
9ea1b878 | 423 | |
40720ce3 MC |
424 | err: |
425 | NCONF_free(cnf); | |
426 | ASN1_TYPE_free(atyp); | |
9ea1b878 | 427 | |
40720ce3 | 428 | return -1; |
9ea1b878 | 429 | |
40720ce3 | 430 | } |