VirtualBox

source: vbox/trunk/src/libs/openssl-3.4.1/apps/asn1parse.c@ 109302

Last change on this file since 109302 was 109052, checked in by vboxsync, 4 weeks ago

openssl-3.4.1: Applied our changes, regenerated files, added missing files and functions. This time with a three way merge. ​bugref:10890
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 10.6 KB
Line 
1/*
2 * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include "apps.h"
14#include "progs.h"
15#include <openssl/err.h>
16#include <openssl/evp.h>
17#include <openssl/x509.h>
18#include <openssl/pem.h>
19#include <openssl/asn1t.h>
20
21typedef enum OPTION_choice {
22 OPT_COMMON,
23 OPT_INFORM, OPT_IN, OPT_OUT, OPT_INDENT, OPT_NOOUT,
24 OPT_OID, OPT_OFFSET, OPT_LENGTH, OPT_DUMP, OPT_DLIMIT,
25 OPT_STRPARSE, OPT_GENSTR, OPT_GENCONF, OPT_STRICTPEM,
26 OPT_ITEM
27} OPTION_CHOICE;
28
29const OPTIONS asn1parse_options[] = {
30 OPT_SECTION("General"),
31 {"help", OPT_HELP, '-', "Display this summary"},
32 {"oid", OPT_OID, '<', "file of extra oid definitions"},
33
34 OPT_SECTION("I/O"),
35 {"inform", OPT_INFORM, 'A', "input format - one of DER PEM B64"},
36 {"in", OPT_IN, '<', "input file"},
37 {"out", OPT_OUT, '>', "output file (output format is always DER)"},
38 {"noout", OPT_NOOUT, 0, "do not produce any output"},
39 {"offset", OPT_OFFSET, 'p', "offset into file"},
40 {"length", OPT_LENGTH, 'p', "length of section in file"},
41 {"strparse", OPT_STRPARSE, 'p',
42 "offset; a series of these can be used to 'dig'"},
43 {"genstr", OPT_GENSTR, 's', "string to generate ASN1 structure from"},
44 {OPT_MORE_STR, 0, 0, "into multiple ASN1 blob wrappings"},
45 {"genconf", OPT_GENCONF, 's', "file to generate ASN1 structure from"},
46 {"strictpem", OPT_STRICTPEM, 0,
47 "equivalent to '-inform pem' (obsolete)"},
48 {"item", OPT_ITEM, 's', "item to parse and print"},
49 {OPT_MORE_STR, 0, 0, "(-inform will be ignored)"},
50
51 OPT_SECTION("Formatting"),
52 {"i", OPT_INDENT, 0, "indents the output"},
53 {"dump", OPT_DUMP, 0, "unknown data in hex form"},
54 {"dlimit", OPT_DLIMIT, 'p',
55 "dump the first arg bytes of unknown data in hex form"},
56 {NULL}
57};
58
59static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf);
60
61int asn1parse_main(int argc, char **argv)
62{
63 ASN1_TYPE *at = NULL;
64 BIO *in = NULL, *b64 = NULL, *derout = NULL;
65 BUF_MEM *buf = NULL;
66 STACK_OF(OPENSSL_STRING) *osk = NULL;
67 char *genstr = NULL, *genconf = NULL;
68 char *infile = NULL, *oidfile = NULL, *derfile = NULL;
69 unsigned char *str = NULL;
70 char *name = NULL, *header = NULL, *prog;
71 const unsigned char *ctmpbuf;
72 int indent = 0, noout = 0, dump = 0, informat = FORMAT_PEM;
73 int offset = 0, ret = 1, i, j;
74 long num, tmplen;
75 unsigned char *tmpbuf;
76 unsigned int length = 0;
77 OPTION_CHOICE o;
78 const ASN1_ITEM *it = NULL;
79
80 prog = opt_init(argc, argv, asn1parse_options);
81
82 if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
83 BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
84 goto end;
85 }
86
87 while ((o = opt_next()) != OPT_EOF) {
88 switch (o) {
89 case OPT_EOF:
90 case OPT_ERR:
91 opthelp:
92 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
93 goto end;
94 case OPT_HELP:
95 opt_help(asn1parse_options);
96 ret = 0;
97 goto end;
98 case OPT_INFORM:
99 if (!opt_format(opt_arg(), OPT_FMT_ASN1, &informat))
100 goto opthelp;
101 break;
102 case OPT_IN:
103 infile = opt_arg();
104 break;
105 case OPT_OUT:
106 derfile = opt_arg();
107 break;
108 case OPT_INDENT:
109 indent = 1;
110 break;
111 case OPT_NOOUT:
112 noout = 1;
113 break;
114 case OPT_OID:
115 oidfile = opt_arg();
116 break;
117 case OPT_OFFSET:
118 offset = strtol(opt_arg(), NULL, 0);
119 break;
120 case OPT_LENGTH:
121 length = strtol(opt_arg(), NULL, 0);
122 break;
123 case OPT_DUMP:
124 dump = -1;
125 break;
126 case OPT_DLIMIT:
127 dump = strtol(opt_arg(), NULL, 0);
128 break;
129 case OPT_STRPARSE:
130 if (sk_OPENSSL_STRING_push(osk, opt_arg()) <= 0)
131 goto end;
132 break;
133 case OPT_GENSTR:
134 genstr = opt_arg();
135 break;
136 case OPT_GENCONF:
137 genconf = opt_arg();
138 break;
139 case OPT_STRICTPEM:
140 /* accepted for backward compatibility */
141 informat = FORMAT_PEM;
142 break;
143 case OPT_ITEM:
144 it = ASN1_ITEM_lookup(opt_arg());
145 if (it == NULL) {
146 size_t tmp;
147
148 BIO_printf(bio_err, "Unknown item name %s\n", opt_arg());
149 BIO_puts(bio_err, "Supported types:\n");
150 for (tmp = 0;; tmp++) {
151 it = ASN1_ITEM_get(tmp);
152 if (it == NULL)
153 break;
154 BIO_printf(bio_err, " %s\n", it->sname);
155 }
156 goto end;
157 }
158 break;
159 }
160 }
161
162 /* No extra args. */
163 if (!opt_check_rest_arg(NULL))
164 goto opthelp;
165
166 if (oidfile != NULL) {
167 in = bio_open_default(oidfile, 'r', FORMAT_TEXT);
168 if (in == NULL)
169 goto end;
170 OBJ_create_objects(in);
171 BIO_free(in);
172 }
173
174 if ((in = bio_open_default(infile, 'r', informat)) == NULL)
175 goto end;
176
177 if (derfile && (derout = bio_open_default(derfile, 'w', FORMAT_ASN1)) == NULL)
178 goto end;
179
180 if ((buf = BUF_MEM_new()) == NULL)
181 goto end;
182 if (genconf == NULL && genstr == NULL && informat == FORMAT_PEM) {
183 if (PEM_read_bio(in, &name, &header, &str, &num) != 1) {
184 BIO_printf(bio_err, "Error reading PEM file\n");
185 ERR_print_errors(bio_err);
186 goto end;
187 }
188 buf->data = (char *)str;
189 buf->length = buf->max = num;
190 } else {
191 if (!BUF_MEM_grow(buf, BUFSIZ * 8))
192 goto end; /* Pre-allocate :-) */
193
194 if (genstr || genconf) {
195 num = do_generate(genstr, genconf, buf);
196 if (num < 0) {
197 ERR_print_errors(bio_err);
198 goto end;
199 }
200 } else {
201
202 if (informat == FORMAT_BASE64) {
203 BIO *tmp;
204
205 if ((b64 = BIO_new(BIO_f_base64())) == NULL)
206 goto end;
207 BIO_push(b64, in);
208 tmp = in;
209 in = b64;
210 b64 = tmp;
211 }
212
213 num = 0;
214 for (;;) {
215 if (!BUF_MEM_grow(buf, num + BUFSIZ))
216 goto end;
217 i = BIO_read(in, &(buf->data[num]), BUFSIZ);
218 if (i <= 0)
219 break;
220 /* make sure num doesn't overflow */
221 if (i > LONG_MAX - num)
222 goto end;
223 num += i;
224 }
225 }
226 str = (unsigned char *)buf->data;
227
228 }
229
230 /* If any structs to parse go through in sequence */
231
232 if (sk_OPENSSL_STRING_num(osk)) {
233 tmpbuf = str;
234 tmplen = num;
235 for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
236 ASN1_TYPE *atmp;
237 int typ;
238 j = strtol(sk_OPENSSL_STRING_value(osk, i), NULL, 0);
239 if (j <= 0 || j >= tmplen) {
240 BIO_printf(bio_err, "'%s' is out of range\n",
241 sk_OPENSSL_STRING_value(osk, i));
242 continue;
243 }
244 tmpbuf += j;
245 tmplen -= j;
246 atmp = at;
247 ctmpbuf = tmpbuf;
248 at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
249 ASN1_TYPE_free(atmp);
250 if (!at) {
251 BIO_printf(bio_err, "Error parsing structure\n");
252 ERR_print_errors(bio_err);
253 goto end;
254 }
255 typ = ASN1_TYPE_get(at);
256 if ((typ == V_ASN1_OBJECT)
257 || (typ == V_ASN1_BOOLEAN)
258 || (typ == V_ASN1_NULL)) {
259 BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
260 ERR_print_errors(bio_err);
261 goto end;
262 }
263 /* hmm... this is a little evil but it works */
264 tmpbuf = at->value.asn1_string->data;
265 tmplen = at->value.asn1_string->length;
266 }
267 str = tmpbuf;
268 num = tmplen;
269 }
270
271 if (offset < 0 || offset >= num) {
272 BIO_printf(bio_err, "Error: offset out of range\n");
273 goto end;
274 }
275
276 num -= offset;
277
278 if (length == 0 || length > (unsigned int)num)
279 length = (unsigned int)num;
280 if (derout != NULL) {
281 if (BIO_write(derout, str + offset, length) != (int)length) {
282 BIO_printf(bio_err, "Error writing output\n");
283 ERR_print_errors(bio_err);
284 goto end;
285 }
286 }
287 if (!noout) {
288 const unsigned char *p = str + offset;
289
290 if (it != NULL) {
291 ASN1_VALUE *value = ASN1_item_d2i(NULL, &p, length, it);
292 if (value == NULL) {
293 BIO_printf(bio_err, "Error parsing item %s\n", it->sname);
294 ERR_print_errors(bio_err);
295 goto end;
296 }
297 ASN1_item_print(bio_out, value, 0, it, NULL);
298 ASN1_item_free(value, it);
299 } else {
300 if (!ASN1_parse_dump(bio_out, p, length, indent, dump)) {
301 ERR_print_errors(bio_err);
302 goto end;
303 }
304 }
305 }
306 ret = 0;
307 end:
308 BIO_free(derout);
309 BIO_free(in);
310 BIO_free(b64);
311 if (ret != 0)
312 ERR_print_errors(bio_err);
313 BUF_MEM_free(buf);
314 OPENSSL_free(name);
315 OPENSSL_free(header);
316 ASN1_TYPE_free(at);
317 sk_OPENSSL_STRING_free(osk);
318 return ret;
319}
320
321static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf)
322{
323 CONF *cnf = NULL;
324 int len;
325 unsigned char *p;
326 ASN1_TYPE *atyp = NULL;
327
328 if (genconf != NULL) {
329 if ((cnf = app_load_config(genconf)) == NULL)
330 goto err;
331 if (genstr == NULL)
332 genstr = NCONF_get_string(cnf, "default", "asn1");
333 if (genstr == NULL) {
334 BIO_printf(bio_err, "Can't find 'asn1' in '%s'\n", genconf);
335 goto err;
336 }
337 }
338
339 atyp = ASN1_generate_nconf(genstr, cnf);
340 NCONF_free(cnf);
341 cnf = NULL;
342
343 if (atyp == NULL)
344 return -1;
345
346 len = i2d_ASN1_TYPE(atyp, NULL);
347
348 if (len <= 0)
349 goto err;
350
351 if (!BUF_MEM_grow(buf, len))
352 goto err;
353
354 p = (unsigned char *)buf->data;
355
356 i2d_ASN1_TYPE(atyp, &p);
357
358 ASN1_TYPE_free(atyp);
359 return len;
360
361 err:
362 NCONF_free(cnf);
363 ASN1_TYPE_free(atyp);
364 return -1;
365}
Note: See TracBrowser for help on using the repository browser.

© 2025 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette