VirtualBox

source: vbox/trunk/src/libs/openssl-3.0.1/apps/asn1pars.c@ 94081

Last change on this file since 94081 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126
File size: 10.3 KB
Line 
1/*
2 * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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_ERR = -1, OPT_EOF = 0, OPT_HELP,
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 {"help", OPT_HELP, '-', "Display this summary"},
31 {"inform", OPT_INFORM, 'F', "input format - one of DER PEM"},
32 {"in", OPT_IN, '<', "input file"},
33 {"out", OPT_OUT, '>', "output file (output format is always DER)"},
34 {"i", OPT_INDENT, 0, "indents the output"},
35 {"noout", OPT_NOOUT, 0, "do not produce any output"},
36 {"offset", OPT_OFFSET, 'p', "offset into file"},
37 {"length", OPT_LENGTH, 'p', "length of section in file"},
38 {"oid", OPT_OID, '<', "file of extra oid definitions"},
39 {"dump", OPT_DUMP, 0, "unknown data in hex form"},
40 {"dlimit", OPT_DLIMIT, 'p',
41 "dump the first arg bytes of unknown data in hex form"},
42 {"strparse", OPT_STRPARSE, 'p',
43 "offset; a series of these can be used to 'dig'"},
44 {OPT_MORE_STR, 0, 0, "into multiple ASN1 blob wrappings"},
45 {"genstr", OPT_GENSTR, 's', "string to generate ASN1 structure from"},
46 {"genconf", OPT_GENCONF, 's', "file to generate ASN1 structure from"},
47 {OPT_MORE_STR, 0, 0, "(-inform will be ignored)"},
48 {"strictpem", OPT_STRICTPEM, 0,
49 "do not attempt base64 decode outside PEM markers"},
50 {"item", OPT_ITEM, 's', "item to parse and print"},
51 {NULL}
52};
53
54static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf);
55
56int asn1parse_main(int argc, char **argv)
57{
58 ASN1_TYPE *at = NULL;
59 BIO *in = NULL, *b64 = NULL, *derout = NULL;
60 BUF_MEM *buf = NULL;
61 STACK_OF(OPENSSL_STRING) *osk = NULL;
62 char *genstr = NULL, *genconf = NULL;
63 char *infile = NULL, *oidfile = NULL, *derfile = NULL;
64 unsigned char *str = NULL;
65 char *name = NULL, *header = NULL, *prog;
66 const unsigned char *ctmpbuf;
67 int indent = 0, noout = 0, dump = 0, strictpem = 0, informat = FORMAT_PEM;
68 int offset = 0, ret = 1, i, j;
69 long num, tmplen;
70 unsigned char *tmpbuf;
71 unsigned int length = 0;
72 OPTION_CHOICE o;
73 const ASN1_ITEM *it = NULL;
74
75 prog = opt_init(argc, argv, asn1parse_options);
76
77 if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
78 BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
79 goto end;
80 }
81
82 while ((o = opt_next()) != OPT_EOF) {
83 switch (o) {
84 case OPT_EOF:
85 case OPT_ERR:
86 opthelp:
87 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
88 goto end;
89 case OPT_HELP:
90 opt_help(asn1parse_options);
91 ret = 0;
92 goto end;
93 case OPT_INFORM:
94 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
95 goto opthelp;
96 break;
97 case OPT_IN:
98 infile = opt_arg();
99 break;
100 case OPT_OUT:
101 derfile = opt_arg();
102 break;
103 case OPT_INDENT:
104 indent = 1;
105 break;
106 case OPT_NOOUT:
107 noout = 1;
108 break;
109 case OPT_OID:
110 oidfile = opt_arg();
111 break;
112 case OPT_OFFSET:
113 offset = strtol(opt_arg(), NULL, 0);
114 break;
115 case OPT_LENGTH:
116 length = strtol(opt_arg(), NULL, 0);
117 break;
118 case OPT_DUMP:
119 dump = -1;
120 break;
121 case OPT_DLIMIT:
122 dump = strtol(opt_arg(), NULL, 0);
123 break;
124 case OPT_STRPARSE:
125 sk_OPENSSL_STRING_push(osk, opt_arg());
126 break;
127 case OPT_GENSTR:
128 genstr = opt_arg();
129 break;
130 case OPT_GENCONF:
131 genconf = opt_arg();
132 break;
133 case OPT_STRICTPEM:
134 strictpem = 1;
135 informat = FORMAT_PEM;
136 break;
137 case OPT_ITEM:
138 it = ASN1_ITEM_lookup(opt_arg());
139 if (it == NULL) {
140 size_t tmp;
141
142 BIO_printf(bio_err, "Unknown item name %s\n", opt_arg());
143 BIO_puts(bio_err, "Supported types:\n");
144 for (tmp = 0;; tmp++) {
145 it = ASN1_ITEM_get(tmp);
146 if (it == NULL)
147 break;
148 BIO_printf(bio_err, " %s\n", it->sname);
149 }
150 goto end;
151 }
152 break;
153 }
154 }
155 argc = opt_num_rest();
156 if (argc != 0)
157 goto opthelp;
158
159 if (oidfile != NULL) {
160 in = bio_open_default(oidfile, 'r', FORMAT_TEXT);
161 if (in == NULL)
162 goto end;
163 OBJ_create_objects(in);
164 BIO_free(in);
165 }
166
167 if ((in = bio_open_default(infile, 'r', informat)) == NULL)
168 goto end;
169
170 if (derfile && (derout = bio_open_default(derfile, 'w', FORMAT_ASN1)) == NULL)
171 goto end;
172
173 if ((buf = BUF_MEM_new()) == NULL)
174 goto end;
175 if (strictpem) {
176 if (PEM_read_bio(in, &name, &header, &str, &num) != 1) {
177 BIO_printf(bio_err, "Error reading PEM file\n");
178 ERR_print_errors(bio_err);
179 goto end;
180 }
181 buf->data = (char *)str;
182 buf->length = buf->max = num;
183 } else {
184 if (!BUF_MEM_grow(buf, BUFSIZ * 8))
185 goto end; /* Pre-allocate :-) */
186
187 if (genstr || genconf) {
188 num = do_generate(genstr, genconf, buf);
189 if (num < 0) {
190 ERR_print_errors(bio_err);
191 goto end;
192 }
193 } else {
194
195 if (informat == FORMAT_PEM) {
196 BIO *tmp;
197
198 if ((b64 = BIO_new(BIO_f_base64())) == NULL)
199 goto end;
200 BIO_push(b64, in);
201 tmp = in;
202 in = b64;
203 b64 = tmp;
204 }
205
206 num = 0;
207 for (;;) {
208 if (!BUF_MEM_grow(buf, num + BUFSIZ))
209 goto end;
210 i = BIO_read(in, &(buf->data[num]), BUFSIZ);
211 if (i <= 0)
212 break;
213 num += i;
214 }
215 }
216 str = (unsigned char *)buf->data;
217
218 }
219
220 /* If any structs to parse go through in sequence */
221
222 if (sk_OPENSSL_STRING_num(osk)) {
223 tmpbuf = str;
224 tmplen = num;
225 for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
226 ASN1_TYPE *atmp;
227 int typ;
228 j = strtol(sk_OPENSSL_STRING_value(osk, i), NULL, 0);
229 if (j <= 0 || j >= tmplen) {
230 BIO_printf(bio_err, "'%s' is out of range\n",
231 sk_OPENSSL_STRING_value(osk, i));
232 continue;
233 }
234 tmpbuf += j;
235 tmplen -= j;
236 atmp = at;
237 ctmpbuf = tmpbuf;
238 at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
239 ASN1_TYPE_free(atmp);
240 if (!at) {
241 BIO_printf(bio_err, "Error parsing structure\n");
242 ERR_print_errors(bio_err);
243 goto end;
244 }
245 typ = ASN1_TYPE_get(at);
246 if ((typ == V_ASN1_OBJECT)
247 || (typ == V_ASN1_BOOLEAN)
248 || (typ == V_ASN1_NULL)) {
249 BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
250 ERR_print_errors(bio_err);
251 goto end;
252 }
253 /* hmm... this is a little evil but it works */
254 tmpbuf = at->value.asn1_string->data;
255 tmplen = at->value.asn1_string->length;
256 }
257 str = tmpbuf;
258 num = tmplen;
259 }
260
261 if (offset < 0 || offset >= num) {
262 BIO_printf(bio_err, "Error: offset out of range\n");
263 goto end;
264 }
265
266 num -= offset;
267
268 if (length == 0 || length > (unsigned int)num)
269 length = (unsigned int)num;
270 if (derout != NULL) {
271 if (BIO_write(derout, str + offset, length) != (int)length) {
272 BIO_printf(bio_err, "Error writing output\n");
273 ERR_print_errors(bio_err);
274 goto end;
275 }
276 }
277 if (!noout) {
278 const unsigned char *p = str + offset;
279
280 if (it != NULL) {
281 ASN1_VALUE *value = ASN1_item_d2i(NULL, &p, length, it);
282 if (value == NULL) {
283 BIO_printf(bio_err, "Error parsing item %s\n", it->sname);
284 ERR_print_errors(bio_err);
285 goto end;
286 }
287 ASN1_item_print(bio_out, value, 0, it, NULL);
288 ASN1_item_free(value, it);
289 } else {
290 if (!ASN1_parse_dump(bio_out, p, length, indent, dump)) {
291 ERR_print_errors(bio_err);
292 goto end;
293 }
294 }
295 }
296 ret = 0;
297 end:
298 BIO_free(derout);
299 BIO_free(in);
300 BIO_free(b64);
301 if (ret != 0)
302 ERR_print_errors(bio_err);
303 BUF_MEM_free(buf);
304 OPENSSL_free(name);
305 OPENSSL_free(header);
306 ASN1_TYPE_free(at);
307 sk_OPENSSL_STRING_free(osk);
308 return ret;
309}
310
311static int do_generate(char *genstr, const char *genconf, BUF_MEM *buf)
312{
313 CONF *cnf = NULL;
314 int len;
315 unsigned char *p;
316 ASN1_TYPE *atyp = NULL;
317
318 if (genconf != NULL) {
319 if ((cnf = app_load_config(genconf)) == NULL)
320 goto err;
321 if (genstr == NULL)
322 genstr = NCONF_get_string(cnf, "default", "asn1");
323 if (genstr == NULL) {
324 BIO_printf(bio_err, "Can't find 'asn1' in '%s'\n", genconf);
325 goto err;
326 }
327 }
328
329 atyp = ASN1_generate_nconf(genstr, cnf);
330 NCONF_free(cnf);
331 cnf = NULL;
332
333 if (atyp == NULL)
334 return -1;
335
336 len = i2d_ASN1_TYPE(atyp, NULL);
337
338 if (len <= 0)
339 goto err;
340
341 if (!BUF_MEM_grow(buf, len))
342 goto err;
343
344 p = (unsigned char *)buf->data;
345
346 i2d_ASN1_TYPE(atyp, &p);
347
348 ASN1_TYPE_free(atyp);
349 return len;
350
351 err:
352 NCONF_free(cnf);
353 ASN1_TYPE_free(atyp);
354 return -1;
355}
Note: See TracBrowser for help on using the repository browser.

© 2024 Oracle Support Privacy / Do Not Sell My Info Terms of Use Trademark Policy Automated Access Etiquette