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[minix.git] / crypto / external / bsd / openssl / dist / apps / ts.c
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1 /* apps/ts.c */
2 /*
3 * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project
4 * 2002.
5 */
6 /* ====================================================================
7 * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include "apps.h"
64 #include <openssl/bio.h>
65 #include <openssl/err.h>
66 #include <openssl/pem.h>
67 #include <openssl/rand.h>
68 #include <openssl/ts.h>
69 #include <openssl/bn.h>
71 #undef PROG
72 #define PROG ts_main
74 /* Length of the nonce of the request in bits (must be a multiple of 8). */
75 #define NONCE_LENGTH 64
77 /* Macro definitions for the configuration file. */
78 #define ENV_OID_FILE "oid_file"
80 /* Local function declarations. */
82 static ASN1_OBJECT *txt2obj(const char *oid);
83 static CONF *load_config_file(const char *configfile);
85 /* Query related functions. */
86 static int query_command(const char *data, char *digest,
87 const EVP_MD *md, const char *policy, int no_nonce,
88 int cert, const char *in, const char *out, int text);
89 static BIO *BIO_open_with_default(const char *file, const char *mode,
90 FILE *default_fp);
91 static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md,
92 const char *policy, int no_nonce, int cert);
93 static int create_digest(BIO *input, char *digest,
94 const EVP_MD *md, unsigned char **md_value);
95 static ASN1_INTEGER *create_nonce(int bits);
97 /* Reply related functions. */
98 static int reply_command(CONF *conf, char *section, char *engine,
99 char *queryfile, char *passin, char *inkey,
100 char *signer, char *chain, const char *policy,
101 char *in, int token_in, char *out, int token_out,
102 int text);
103 static TS_RESP *read_PKCS7(BIO *in_bio);
104 static TS_RESP *create_response(CONF *conf, const char *section, char *engine,
105 char *queryfile, char *passin, char *inkey,
106 char *signer, char *chain,
107 const char *policy);
108 static ASN1_INTEGER *MS_CALLBACK serial_cb(TS_RESP_CTX *ctx, void *data);
109 static ASN1_INTEGER *next_serial(const char *serialfile);
110 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial);
112 /* Verify related functions. */
113 static int verify_command(char *data, char *digest, char *queryfile,
114 char *in, int token_in,
115 char *ca_path, char *ca_file, char *untrusted);
116 static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest,
117 char *queryfile,
118 char *ca_path, char *ca_file,
119 char *untrusted);
120 static X509_STORE *create_cert_store(char *ca_path, char *ca_file);
121 static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx);
123 /* Main function definition. */
124 int MAIN(int, char **);
126 int MAIN(int argc, char **argv)
128 int ret = 1;
129 char *configfile = NULL;
130 char *section = NULL;
131 CONF *conf = NULL;
132 enum mode {
133 CMD_NONE, CMD_QUERY, CMD_REPLY, CMD_VERIFY
134 } mode = CMD_NONE;
135 char *data = NULL;
136 char *digest = NULL;
137 const EVP_MD *md = NULL;
138 char *rnd = NULL;
139 char *policy = NULL;
140 int no_nonce = 0;
141 int cert = 0;
142 char *in = NULL;
143 char *out = NULL;
144 int text = 0;
145 char *queryfile = NULL;
146 char *passin = NULL; /* Password source. */
147 char *password = NULL; /* Password itself. */
148 char *inkey = NULL;
149 char *signer = NULL;
150 char *chain = NULL;
151 char *ca_path = NULL;
152 char *ca_file = NULL;
153 char *untrusted = NULL;
154 char *engine = NULL;
155 /* Input is ContentInfo instead of TimeStampResp. */
156 int token_in = 0;
157 /* Output is ContentInfo instead of TimeStampResp. */
158 int token_out = 0;
159 int free_bio_err = 0;
161 ERR_load_crypto_strings();
162 apps_startup();
164 if (bio_err == NULL && (bio_err = BIO_new(BIO_s_file())) != NULL) {
165 free_bio_err = 1;
166 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
169 if (!load_config(bio_err, NULL))
170 goto cleanup;
172 for (argc--, argv++; argc > 0; argc--, argv++) {
173 if (strcmp(*argv, "-config") == 0) {
174 if (argc-- < 1)
175 goto usage;
176 configfile = *++argv;
177 } else if (strcmp(*argv, "-section") == 0) {
178 if (argc-- < 1)
179 goto usage;
180 section = *++argv;
181 } else if (strcmp(*argv, "-query") == 0) {
182 if (mode != CMD_NONE)
183 goto usage;
184 mode = CMD_QUERY;
185 } else if (strcmp(*argv, "-data") == 0) {
186 if (argc-- < 1)
187 goto usage;
188 data = *++argv;
189 } else if (strcmp(*argv, "-digest") == 0) {
190 if (argc-- < 1)
191 goto usage;
192 digest = *++argv;
193 } else if (strcmp(*argv, "-rand") == 0) {
194 if (argc-- < 1)
195 goto usage;
196 rnd = *++argv;
197 } else if (strcmp(*argv, "-policy") == 0) {
198 if (argc-- < 1)
199 goto usage;
200 policy = *++argv;
201 } else if (strcmp(*argv, "-no_nonce") == 0) {
202 no_nonce = 1;
203 } else if (strcmp(*argv, "-cert") == 0) {
204 cert = 1;
205 } else if (strcmp(*argv, "-in") == 0) {
206 if (argc-- < 1)
207 goto usage;
208 in = *++argv;
209 } else if (strcmp(*argv, "-token_in") == 0) {
210 token_in = 1;
211 } else if (strcmp(*argv, "-out") == 0) {
212 if (argc-- < 1)
213 goto usage;
214 out = *++argv;
215 } else if (strcmp(*argv, "-token_out") == 0) {
216 token_out = 1;
217 } else if (strcmp(*argv, "-text") == 0) {
218 text = 1;
219 } else if (strcmp(*argv, "-reply") == 0) {
220 if (mode != CMD_NONE)
221 goto usage;
222 mode = CMD_REPLY;
223 } else if (strcmp(*argv, "-queryfile") == 0) {
224 if (argc-- < 1)
225 goto usage;
226 queryfile = *++argv;
227 } else if (strcmp(*argv, "-passin") == 0) {
228 if (argc-- < 1)
229 goto usage;
230 passin = *++argv;
231 } else if (strcmp(*argv, "-inkey") == 0) {
232 if (argc-- < 1)
233 goto usage;
234 inkey = *++argv;
235 } else if (strcmp(*argv, "-signer") == 0) {
236 if (argc-- < 1)
237 goto usage;
238 signer = *++argv;
239 } else if (strcmp(*argv, "-chain") == 0) {
240 if (argc-- < 1)
241 goto usage;
242 chain = *++argv;
243 } else if (strcmp(*argv, "-verify") == 0) {
244 if (mode != CMD_NONE)
245 goto usage;
246 mode = CMD_VERIFY;
247 } else if (strcmp(*argv, "-CApath") == 0) {
248 if (argc-- < 1)
249 goto usage;
250 ca_path = *++argv;
251 } else if (strcmp(*argv, "-CAfile") == 0) {
252 if (argc-- < 1)
253 goto usage;
254 ca_file = *++argv;
255 } else if (strcmp(*argv, "-untrusted") == 0) {
256 if (argc-- < 1)
257 goto usage;
258 untrusted = *++argv;
259 } else if (strcmp(*argv, "-engine") == 0) {
260 if (argc-- < 1)
261 goto usage;
262 engine = *++argv;
263 } else if ((md = EVP_get_digestbyname(*argv + 1)) != NULL) {
264 /* empty. */
265 } else
266 goto usage;
269 /* Seed the random number generator if it is going to be used. */
270 if (mode == CMD_QUERY && !no_nonce) {
271 if (!app_RAND_load_file(NULL, bio_err, 1) && rnd == NULL)
272 BIO_printf(bio_err, "warning, not much extra random "
273 "data, consider using the -rand option\n");
274 if (rnd != NULL)
275 BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
276 app_RAND_load_files(rnd));
279 /* Get the password if required. */
280 if (mode == CMD_REPLY && passin &&
281 !app_passwd(bio_err, passin, NULL, &password, NULL)) {
282 BIO_printf(bio_err, "Error getting password.\n");
283 goto cleanup;
287 * Check consistency of parameters and execute the appropriate function.
289 switch (mode) {
290 case CMD_NONE:
291 goto usage;
292 case CMD_QUERY:
294 * Data file and message imprint cannot be specified at the same
295 * time.
297 ret = data != NULL && digest != NULL;
298 if (ret)
299 goto usage;
300 /* Load the config file for possible policy OIDs. */
301 conf = load_config_file(configfile);
302 ret = !query_command(data, digest, md, policy, no_nonce, cert,
303 in, out, text);
304 break;
305 case CMD_REPLY:
306 conf = load_config_file(configfile);
307 if (in == NULL) {
308 ret = !(queryfile != NULL && conf != NULL && !token_in);
309 if (ret)
310 goto usage;
311 } else {
312 /* 'in' and 'queryfile' are exclusive. */
313 ret = !(queryfile == NULL);
314 if (ret)
315 goto usage;
318 ret = !reply_command(conf, section, engine, queryfile,
319 password, inkey, signer, chain, policy,
320 in, token_in, out, token_out, text);
321 break;
322 case CMD_VERIFY:
323 ret = !(((queryfile && !data && !digest)
324 || (!queryfile && data && !digest)
325 || (!queryfile && !data && digest))
326 && in != NULL);
327 if (ret)
328 goto usage;
330 ret = !verify_command(data, digest, queryfile, in, token_in,
331 ca_path, ca_file, untrusted);
334 goto cleanup;
336 usage:
337 BIO_printf(bio_err, "usage:\n"
338 "ts -query [-rand file%cfile%c...] [-config configfile] "
339 "[-data file_to_hash] [-digest digest_bytes]"
340 "[-md2|-md4|-md5|-sha|-sha1|-mdc2|-ripemd160] "
341 "[-policy object_id] [-no_nonce] [-cert] "
342 "[-in request.tsq] [-out request.tsq] [-text]\n",
343 LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
344 BIO_printf(bio_err, "or\n"
345 "ts -reply [-config configfile] [-section tsa_section] "
346 "[-queryfile request.tsq] [-passin password] "
347 "[-signer tsa_cert.pem] [-inkey private_key.pem] "
348 "[-chain certs_file.pem] [-policy object_id] "
349 "[-in response.tsr] [-token_in] "
350 "[-out response.tsr] [-token_out] [-text] [-engine id]\n");
351 BIO_printf(bio_err, "or\n"
352 "ts -verify [-data file_to_hash] [-digest digest_bytes] "
353 "[-queryfile request.tsq] "
354 "-in response.tsr [-token_in] "
355 "-CApath ca_path -CAfile ca_file.pem "
356 "-untrusted cert_file.pem\n");
357 cleanup:
358 /* Clean up. */
359 app_RAND_write_file(NULL, bio_err);
360 NCONF_free(conf);
361 OPENSSL_free(password);
362 OBJ_cleanup();
363 if (free_bio_err) {
364 BIO_free_all(bio_err);
365 bio_err = NULL;
368 OPENSSL_EXIT(ret);
372 * Configuration file-related function definitions.
375 static ASN1_OBJECT *txt2obj(const char *oid)
377 ASN1_OBJECT *oid_obj = NULL;
379 if (!(oid_obj = OBJ_txt2obj(oid, 0)))
380 BIO_printf(bio_err, "cannot convert %s to OID\n", oid);
382 return oid_obj;
385 static CONF *load_config_file(const char *configfile)
387 CONF *conf = NULL;
388 long errorline = -1;
390 if (!configfile)
391 configfile = getenv("OPENSSL_CONF");
392 if (!configfile)
393 configfile = getenv("SSLEAY_CONF");
395 if (configfile &&
396 (!(conf = NCONF_new(NULL)) ||
397 NCONF_load(conf, configfile, &errorline) <= 0)) {
398 if (errorline <= 0)
399 BIO_printf(bio_err, "error loading the config file "
400 "'%s'\n", configfile);
401 else
402 BIO_printf(bio_err, "error on line %ld of config file "
403 "'%s'\n", errorline, configfile);
406 if (conf != NULL) {
407 const char *p;
409 BIO_printf(bio_err, "Using configuration from %s\n", configfile);
410 p = NCONF_get_string(conf, NULL, ENV_OID_FILE);
411 if (p != NULL) {
412 BIO *oid_bio = BIO_new_file(p, "r");
413 if (!oid_bio)
414 ERR_print_errors(bio_err);
415 else {
416 OBJ_create_objects(oid_bio);
417 BIO_free_all(oid_bio);
419 } else
420 ERR_clear_error();
421 if (!add_oid_section(bio_err, conf))
422 ERR_print_errors(bio_err);
424 return conf;
428 * Query-related method definitions.
431 static int query_command(const char *data, char *digest, const EVP_MD *md,
432 const char *policy, int no_nonce,
433 int cert, const char *in, const char *out, int text)
435 int ret = 0;
436 TS_REQ *query = NULL;
437 BIO *in_bio = NULL;
438 BIO *data_bio = NULL;
439 BIO *out_bio = NULL;
441 /* Build query object either from file or from scratch. */
442 if (in != NULL) {
443 if ((in_bio = BIO_new_file(in, "rb")) == NULL)
444 goto end;
445 query = d2i_TS_REQ_bio(in_bio, NULL);
446 } else {
448 * Open the file if no explicit digest bytes were specified.
450 if (!digest && !(data_bio = BIO_open_with_default(data, "rb", stdin)))
451 goto end;
452 /* Creating the query object. */
453 query = create_query(data_bio, digest, md, policy, no_nonce, cert);
454 /* Saving the random number generator state. */
456 if (query == NULL)
457 goto end;
459 /* Write query either in ASN.1 or in text format. */
460 if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL)
461 goto end;
462 if (text) {
463 /* Text output. */
464 if (!TS_REQ_print_bio(out_bio, query))
465 goto end;
466 } else {
467 /* ASN.1 output. */
468 if (!i2d_TS_REQ_bio(out_bio, query))
469 goto end;
472 ret = 1;
474 end:
475 ERR_print_errors(bio_err);
477 /* Clean up. */
478 BIO_free_all(in_bio);
479 BIO_free_all(data_bio);
480 BIO_free_all(out_bio);
481 TS_REQ_free(query);
483 return ret;
486 static BIO *BIO_open_with_default(const char *file, const char *mode,
487 FILE *default_fp)
489 return file == NULL ? BIO_new_fp(default_fp, BIO_NOCLOSE)
490 : BIO_new_file(file, mode);
493 static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md,
494 const char *policy, int no_nonce, int cert)
496 int ret = 0;
497 TS_REQ *ts_req = NULL;
498 int len;
499 TS_MSG_IMPRINT *msg_imprint = NULL;
500 X509_ALGOR *algo = NULL;
501 unsigned char *data = NULL;
502 ASN1_OBJECT *policy_obj = NULL;
503 ASN1_INTEGER *nonce_asn1 = NULL;
505 /* Setting default message digest. */
506 if (!md && !(md = EVP_get_digestbyname("sha1")))
507 goto err;
509 /* Creating request object. */
510 if (!(ts_req = TS_REQ_new()))
511 goto err;
513 /* Setting version. */
514 if (!TS_REQ_set_version(ts_req, 1))
515 goto err;
517 /* Creating and adding MSG_IMPRINT object. */
518 if (!(msg_imprint = TS_MSG_IMPRINT_new()))
519 goto err;
521 /* Adding algorithm. */
522 if (!(algo = X509_ALGOR_new()))
523 goto err;
524 if (!(algo->algorithm = OBJ_nid2obj(EVP_MD_type(md))))
525 goto err;
526 if (!(algo->parameter = ASN1_TYPE_new()))
527 goto err;
528 algo->parameter->type = V_ASN1_NULL;
529 if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo))
530 goto err;
532 /* Adding message digest. */
533 if ((len = create_digest(data_bio, digest, md, &data)) == 0)
534 goto err;
535 if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len))
536 goto err;
538 if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint))
539 goto err;
541 /* Setting policy if requested. */
542 if (policy && !(policy_obj = txt2obj(policy)))
543 goto err;
544 if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj))
545 goto err;
547 /* Setting nonce if requested. */
548 if (!no_nonce && !(nonce_asn1 = create_nonce(NONCE_LENGTH)))
549 goto err;
550 if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1))
551 goto err;
553 /* Setting certificate request flag if requested. */
554 if (!TS_REQ_set_cert_req(ts_req, cert))
555 goto err;
557 ret = 1;
558 err:
559 if (!ret) {
560 TS_REQ_free(ts_req);
561 ts_req = NULL;
562 BIO_printf(bio_err, "could not create query\n");
564 TS_MSG_IMPRINT_free(msg_imprint);
565 X509_ALGOR_free(algo);
566 OPENSSL_free(data);
567 ASN1_OBJECT_free(policy_obj);
568 ASN1_INTEGER_free(nonce_asn1);
569 return ts_req;
572 static int create_digest(BIO *input, char *digest, const EVP_MD *md,
573 unsigned char **md_value)
575 int md_value_len;
577 md_value_len = EVP_MD_size(md);
578 if (md_value_len < 0)
579 goto err;
580 if (input) {
581 /* Digest must be computed from an input file. */
582 EVP_MD_CTX md_ctx;
583 unsigned char buffer[4096];
584 int length;
586 *md_value = OPENSSL_malloc(md_value_len);
587 if (*md_value == 0)
588 goto err;
590 EVP_DigestInit(&md_ctx, md);
591 while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) {
592 EVP_DigestUpdate(&md_ctx, buffer, length);
594 EVP_DigestFinal(&md_ctx, *md_value, NULL);
595 } else {
596 /* Digest bytes are specified with digest. */
597 long digest_len;
598 *md_value = string_to_hex(digest, &digest_len);
599 if (!*md_value || md_value_len != digest_len) {
600 OPENSSL_free(*md_value);
601 *md_value = NULL;
602 BIO_printf(bio_err, "bad digest, %d bytes "
603 "must be specified\n", md_value_len);
604 goto err;
608 return md_value_len;
609 err:
610 return 0;
613 static ASN1_INTEGER *create_nonce(int bits)
615 unsigned char buf[20];
616 ASN1_INTEGER *nonce = NULL;
617 int len = (bits - 1) / 8 + 1;
618 int i;
620 /* Generating random byte sequence. */
621 if (len > (int)sizeof(buf))
622 goto err;
623 if (RAND_bytes(buf, len) <= 0)
624 goto err;
626 /* Find the first non-zero byte and creating ASN1_INTEGER object. */
627 for (i = 0; i < len && !buf[i]; ++i) ;
628 if (!(nonce = ASN1_INTEGER_new()))
629 goto err;
630 OPENSSL_free(nonce->data);
631 /* Allocate at least one byte. */
632 nonce->length = len - i;
633 if (!(nonce->data = OPENSSL_malloc(nonce->length + 1)))
634 goto err;
635 memcpy(nonce->data, buf + i, nonce->length);
637 return nonce;
638 err:
639 BIO_printf(bio_err, "could not create nonce\n");
640 ASN1_INTEGER_free(nonce);
641 return NULL;
645 * Reply-related method definitions.
648 static int reply_command(CONF *conf, char *section, char *engine,
649 char *queryfile, char *passin, char *inkey,
650 char *signer, char *chain, const char *policy,
651 char *in, int token_in,
652 char *out, int token_out, int text)
654 int ret = 0;
655 TS_RESP *response = NULL;
656 BIO *in_bio = NULL;
657 BIO *query_bio = NULL;
658 BIO *inkey_bio = NULL;
659 BIO *signer_bio = NULL;
660 BIO *out_bio = NULL;
662 /* Build response object either from response or query. */
663 if (in != NULL) {
664 if ((in_bio = BIO_new_file(in, "rb")) == NULL)
665 goto end;
666 if (token_in) {
668 * We have a ContentInfo (PKCS7) object, add 'granted' status
669 * info around it.
671 response = read_PKCS7(in_bio);
672 } else {
673 /* We have a ready-made TS_RESP object. */
674 response = d2i_TS_RESP_bio(in_bio, NULL);
676 } else {
677 response = create_response(conf, section, engine, queryfile,
678 passin, inkey, signer, chain, policy);
679 if (response)
680 BIO_printf(bio_err, "Response has been generated.\n");
681 else
682 BIO_printf(bio_err, "Response is not generated.\n");
684 if (response == NULL)
685 goto end;
687 /* Write response either in ASN.1 or text format. */
688 if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL)
689 goto end;
690 if (text) {
691 /* Text output. */
692 if (token_out) {
693 TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response);
694 if (!TS_TST_INFO_print_bio(out_bio, tst_info))
695 goto end;
696 } else {
697 if (!TS_RESP_print_bio(out_bio, response))
698 goto end;
700 } else {
701 /* ASN.1 DER output. */
702 if (token_out) {
703 PKCS7 *token = TS_RESP_get_token(response);
704 if (!i2d_PKCS7_bio(out_bio, token))
705 goto end;
706 } else {
707 if (!i2d_TS_RESP_bio(out_bio, response))
708 goto end;
712 ret = 1;
714 end:
715 ERR_print_errors(bio_err);
717 /* Clean up. */
718 BIO_free_all(in_bio);
719 BIO_free_all(query_bio);
720 BIO_free_all(inkey_bio);
721 BIO_free_all(signer_bio);
722 BIO_free_all(out_bio);
723 TS_RESP_free(response);
725 return ret;
728 /* Reads a PKCS7 token and adds default 'granted' status info to it. */
729 static TS_RESP *read_PKCS7(BIO *in_bio)
731 int ret = 0;
732 PKCS7 *token = NULL;
733 TS_TST_INFO *tst_info = NULL;
734 TS_RESP *resp = NULL;
735 TS_STATUS_INFO *si = NULL;
737 /* Read PKCS7 object and extract the signed time stamp info. */
738 if (!(token = d2i_PKCS7_bio(in_bio, NULL)))
739 goto end;
740 if (!(tst_info = PKCS7_to_TS_TST_INFO(token)))
741 goto end;
743 /* Creating response object. */
744 if (!(resp = TS_RESP_new()))
745 goto end;
747 /* Create granted status info. */
748 if (!(si = TS_STATUS_INFO_new()))
749 goto end;
750 if (!(ASN1_INTEGER_set(si->status, TS_STATUS_GRANTED)))
751 goto end;
752 if (!TS_RESP_set_status_info(resp, si))
753 goto end;
755 /* Setting encapsulated token. */
756 TS_RESP_set_tst_info(resp, token, tst_info);
757 token = NULL; /* Ownership is lost. */
758 tst_info = NULL; /* Ownership is lost. */
760 ret = 1;
761 end:
762 PKCS7_free(token);
763 TS_TST_INFO_free(tst_info);
764 if (!ret) {
765 TS_RESP_free(resp);
766 resp = NULL;
768 TS_STATUS_INFO_free(si);
769 return resp;
772 static TS_RESP *create_response(CONF *conf, const char *section, char *engine,
773 char *queryfile, char *passin, char *inkey,
774 char *signer, char *chain, const char *policy)
776 int ret = 0;
777 TS_RESP *response = NULL;
778 BIO *query_bio = NULL;
779 TS_RESP_CTX *resp_ctx = NULL;
781 if (!(query_bio = BIO_new_file(queryfile, "rb")))
782 goto end;
784 /* Getting TSA configuration section. */
785 if (!(section = TS_CONF_get_tsa_section(conf, section)))
786 goto end;
788 /* Setting up response generation context. */
789 if (!(resp_ctx = TS_RESP_CTX_new()))
790 goto end;
792 /* Setting serial number provider callback. */
793 if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx))
794 goto end;
795 #ifndef OPENSSL_NO_ENGINE
796 /* Setting default OpenSSL engine. */
797 if (!TS_CONF_set_crypto_device(conf, section, engine))
798 goto end;
799 #endif
801 /* Setting TSA signer certificate. */
802 if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx))
803 goto end;
805 /* Setting TSA signer certificate chain. */
806 if (!TS_CONF_set_certs(conf, section, chain, resp_ctx))
807 goto end;
809 /* Setting TSA signer private key. */
810 if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx))
811 goto end;
813 /* Setting default policy OID. */
814 if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx))
815 goto end;
817 /* Setting acceptable policy OIDs. */
818 if (!TS_CONF_set_policies(conf, section, resp_ctx))
819 goto end;
821 /* Setting the acceptable one-way hash algorithms. */
822 if (!TS_CONF_set_digests(conf, section, resp_ctx))
823 goto end;
825 /* Setting guaranteed time stamp accuracy. */
826 if (!TS_CONF_set_accuracy(conf, section, resp_ctx))
827 goto end;
829 /* Setting the precision of the time. */
830 if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx))
831 goto end;
833 /* Setting the ordering flaf if requested. */
834 if (!TS_CONF_set_ordering(conf, section, resp_ctx))
835 goto end;
837 /* Setting the TSA name required flag if requested. */
838 if (!TS_CONF_set_tsa_name(conf, section, resp_ctx))
839 goto end;
841 /* Setting the ESS cert id chain flag if requested. */
842 if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx))
843 goto end;
845 /* Creating the response. */
846 if (!(response = TS_RESP_create_response(resp_ctx, query_bio)))
847 goto end;
849 ret = 1;
850 end:
851 if (!ret) {
852 TS_RESP_free(response);
853 response = NULL;
855 TS_RESP_CTX_free(resp_ctx);
856 BIO_free_all(query_bio);
858 return response;
861 static ASN1_INTEGER *MS_CALLBACK serial_cb(TS_RESP_CTX *ctx, void *data)
863 const char *serial_file = (const char *)data;
864 ASN1_INTEGER *serial = next_serial(serial_file);
866 if (!serial) {
867 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
868 "Error during serial number "
869 "generation.");
870 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_ADD_INFO_NOT_AVAILABLE);
871 } else
872 save_ts_serial(serial_file, serial);
874 return serial;
877 static ASN1_INTEGER *next_serial(const char *serialfile)
879 int ret = 0;
880 BIO *in = NULL;
881 ASN1_INTEGER *serial = NULL;
882 BIGNUM *bn = NULL;
884 if (!(serial = ASN1_INTEGER_new()))
885 goto err;
887 if (!(in = BIO_new_file(serialfile, "r"))) {
888 ERR_clear_error();
889 BIO_printf(bio_err, "Warning: could not open file %s for "
890 "reading, using serial number: 1\n", serialfile);
891 if (!ASN1_INTEGER_set(serial, 1))
892 goto err;
893 } else {
894 char buf[1024];
895 if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) {
896 BIO_printf(bio_err, "unable to load number from %s\n",
897 serialfile);
898 goto err;
900 if (!(bn = ASN1_INTEGER_to_BN(serial, NULL)))
901 goto err;
902 ASN1_INTEGER_free(serial);
903 serial = NULL;
904 if (!BN_add_word(bn, 1))
905 goto err;
906 if (!(serial = BN_to_ASN1_INTEGER(bn, NULL)))
907 goto err;
909 ret = 1;
910 err:
911 if (!ret) {
912 ASN1_INTEGER_free(serial);
913 serial = NULL;
915 BIO_free_all(in);
916 BN_free(bn);
917 return serial;
920 static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial)
922 int ret = 0;
923 BIO *out = NULL;
925 if (!(out = BIO_new_file(serialfile, "w")))
926 goto err;
927 if (i2a_ASN1_INTEGER(out, serial) <= 0)
928 goto err;
929 if (BIO_puts(out, "\n") <= 0)
930 goto err;
931 ret = 1;
932 err:
933 if (!ret)
934 BIO_printf(bio_err, "could not save serial number to %s\n",
935 serialfile);
936 BIO_free_all(out);
937 return ret;
941 * Verify-related method definitions.
944 static int verify_command(char *data, char *digest, char *queryfile,
945 char *in, int token_in,
946 char *ca_path, char *ca_file, char *untrusted)
948 BIO *in_bio = NULL;
949 PKCS7 *token = NULL;
950 TS_RESP *response = NULL;
951 TS_VERIFY_CTX *verify_ctx = NULL;
952 int ret = 0;
954 /* Decode the token (PKCS7) or response (TS_RESP) files. */
955 if (!(in_bio = BIO_new_file(in, "rb")))
956 goto end;
957 if (token_in) {
958 if (!(token = d2i_PKCS7_bio(in_bio, NULL)))
959 goto end;
960 } else {
961 if (!(response = d2i_TS_RESP_bio(in_bio, NULL)))
962 goto end;
965 if (!(verify_ctx = create_verify_ctx(data, digest, queryfile,
966 ca_path, ca_file, untrusted)))
967 goto end;
969 /* Checking the token or response against the request. */
970 ret = token_in ?
971 TS_RESP_verify_token(verify_ctx, token) :
972 TS_RESP_verify_response(verify_ctx, response);
974 end:
975 printf("Verification: ");
976 if (ret)
977 printf("OK\n");
978 else {
979 printf("FAILED\n");
980 /* Print errors, if there are any. */
981 ERR_print_errors(bio_err);
984 /* Clean up. */
985 BIO_free_all(in_bio);
986 PKCS7_free(token);
987 TS_RESP_free(response);
988 TS_VERIFY_CTX_free(verify_ctx);
989 return ret;
992 static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest,
993 char *queryfile,
994 char *ca_path, char *ca_file,
995 char *untrusted)
997 TS_VERIFY_CTX *ctx = NULL;
998 BIO *input = NULL;
999 TS_REQ *request = NULL;
1000 int ret = 0;
1002 if (data != NULL || digest != NULL) {
1003 if (!(ctx = TS_VERIFY_CTX_new()))
1004 goto err;
1005 ctx->flags = TS_VFY_VERSION | TS_VFY_SIGNER;
1006 if (data != NULL) {
1007 ctx->flags |= TS_VFY_DATA;
1008 if (!(ctx->data = BIO_new_file(data, "rb")))
1009 goto err;
1010 } else if (digest != NULL) {
1011 long imprint_len;
1012 ctx->flags |= TS_VFY_IMPRINT;
1013 if (!(ctx->imprint = string_to_hex(digest, &imprint_len))) {
1014 BIO_printf(bio_err, "invalid digest string\n");
1015 goto err;
1017 ctx->imprint_len = imprint_len;
1020 } else if (queryfile != NULL) {
1022 * The request has just to be read, decoded and converted to a verify
1023 * context object.
1025 if (!(input = BIO_new_file(queryfile, "rb")))
1026 goto err;
1027 if (!(request = d2i_TS_REQ_bio(input, NULL)))
1028 goto err;
1029 if (!(ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)))
1030 goto err;
1031 } else
1032 return NULL;
1034 /* Add the signature verification flag and arguments. */
1035 ctx->flags |= TS_VFY_SIGNATURE;
1037 /* Initialising the X509_STORE object. */
1038 if (!(ctx->store = create_cert_store(ca_path, ca_file)))
1039 goto err;
1041 /* Loading untrusted certificates. */
1042 if (untrusted && !(ctx->certs = TS_CONF_load_certs(untrusted)))
1043 goto err;
1045 ret = 1;
1046 err:
1047 if (!ret) {
1048 TS_VERIFY_CTX_free(ctx);
1049 ctx = NULL;
1051 BIO_free_all(input);
1052 TS_REQ_free(request);
1053 return ctx;
1056 static X509_STORE *create_cert_store(char *ca_path, char *ca_file)
1058 X509_STORE *cert_ctx = NULL;
1059 X509_LOOKUP *lookup = NULL;
1060 int i;
1062 /* Creating the X509_STORE object. */
1063 cert_ctx = X509_STORE_new();
1065 /* Setting the callback for certificate chain verification. */
1066 X509_STORE_set_verify_cb(cert_ctx, verify_cb);
1068 /* Adding a trusted certificate directory source. */
1069 if (ca_path) {
1070 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
1071 if (lookup == NULL) {
1072 BIO_printf(bio_err, "memory allocation failure\n");
1073 goto err;
1075 i = X509_LOOKUP_add_dir(lookup, ca_path, X509_FILETYPE_PEM);
1076 if (!i) {
1077 BIO_printf(bio_err, "Error loading directory %s\n", ca_path);
1078 goto err;
1082 /* Adding a trusted certificate file source. */
1083 if (ca_file) {
1084 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
1085 if (lookup == NULL) {
1086 BIO_printf(bio_err, "memory allocation failure\n");
1087 goto err;
1089 i = X509_LOOKUP_load_file(lookup, ca_file, X509_FILETYPE_PEM);
1090 if (!i) {
1091 BIO_printf(bio_err, "Error loading file %s\n", ca_file);
1092 goto err;
1096 return cert_ctx;
1097 err:
1098 X509_STORE_free(cert_ctx);
1099 return NULL;
1102 static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx)
1105 char buf[256];
1107 if (!ok)
1109 X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),
1110 buf, sizeof(buf));
1111 printf("%s\n", buf);
1112 printf("error %d at %d depth lookup: %s\n",
1113 ctx->error, ctx->error_depth,
1114 X509_verify_cert_error_string(ctx->error));
1118 return ok;