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c7235be6 UM |
1 | /* apps/ts.c */ |
2 | /* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL | |
3 | * project 2002. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2001 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | * | |
53 | * This product includes cryptographic software written by Eric Young | |
54 | * (eay@cryptsoft.com). This product includes software written by Tim | |
55 | * Hudson (tjh@cryptsoft.com). | |
56 | * | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include <stdlib.h> | |
61 | #include <string.h> | |
62 | #include "apps.h" | |
63 | #include <openssl/bio.h> | |
64 | #include <openssl/err.h> | |
65 | #include <openssl/pem.h> | |
66 | #include <openssl/rand.h> | |
67 | #include <openssl/ts.h> | |
1e26a8ba | 68 | #include <openssl/bn.h> |
c7235be6 UM |
69 | |
70 | #undef PROG | |
71 | #define PROG ts_main | |
72 | ||
73 | /* Length of the nonce of the request in bits (must be a multiple of 8). */ | |
74 | #define NONCE_LENGTH 64 | |
75 | ||
76 | /* Macro definitions for the configuration file. */ | |
77 | #define ENV_OID_FILE "oid_file" | |
78 | ||
79 | /* Local function declarations. */ | |
80 | ||
81 | static ASN1_OBJECT *txt2obj(const char *oid); | |
82 | static CONF *load_config_file(const char *configfile); | |
83 | ||
84 | /* Query related functions. */ | |
85 | static int query_command(const char *data, char *digest, | |
86 | const EVP_MD *md, const char *policy, int no_nonce, | |
87 | int cert, const char *in, const char *out, int text); | |
88 | static BIO *BIO_open_with_default(const char *file, const char *mode, | |
89 | FILE *default_fp); | |
90 | static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md, | |
91 | const char *policy, int no_nonce, int cert); | |
92 | static int create_digest(BIO *input, char *digest, | |
93 | const EVP_MD *md, unsigned char **md_value); | |
94 | static ASN1_INTEGER *create_nonce(int bits); | |
95 | ||
96 | /* Reply related functions. */ | |
97 | static int reply_command(CONF *conf, char *section, char *engine, | |
98 | char *queryfile, char *passin, char *inkey, | |
99 | char *signer, char *chain, const char *policy, | |
100 | char *in, int token_in, char *out, int token_out, | |
101 | int text); | |
102 | static TS_RESP *read_PKCS7(BIO *in_bio); | |
103 | static TS_RESP *create_response(CONF *conf, const char *section, char *engine, | |
104 | char *queryfile, char *passin, char *inkey, | |
105 | char *signer, char *chain, const char *policy); | |
106 | static ASN1_INTEGER * MS_CALLBACK serial_cb(TS_RESP_CTX *ctx, void *data); | |
107 | static ASN1_INTEGER *next_serial(const char *serialfile); | |
108 | static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial); | |
109 | ||
110 | /* Verify related functions. */ | |
111 | static int verify_command(char *data, char *digest, char *queryfile, | |
112 | char *in, int token_in, | |
113 | char *ca_path, char *ca_file, char *untrusted); | |
114 | static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest, | |
115 | char *queryfile, | |
116 | char *ca_path, char *ca_file, | |
117 | char *untrusted); | |
118 | static X509_STORE *create_cert_store(char *ca_path, char *ca_file); | |
119 | static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx); | |
120 | ||
121 | /* Main function definition. */ | |
fcfd8716 | 122 | int MAIN(int, char **); |
c7235be6 UM |
123 | |
124 | int MAIN(int argc, char **argv) | |
125 | { | |
126 | int ret = 1; | |
127 | char *configfile = NULL; | |
128 | char *section = NULL; | |
129 | CONF *conf = NULL; | |
130 | enum mode { | |
131 | CMD_NONE, CMD_QUERY, CMD_REPLY, CMD_VERIFY | |
132 | } mode = CMD_NONE; | |
133 | char *data = NULL; | |
134 | char *digest = NULL; | |
135 | const EVP_MD *md = NULL; | |
136 | char *rnd = NULL; | |
137 | char *policy = NULL; | |
138 | int no_nonce = 0; | |
139 | int cert = 0; | |
140 | char *in = NULL; | |
141 | char *out = NULL; | |
142 | int text = 0; | |
143 | char *queryfile = NULL; | |
144 | char *passin = NULL; /* Password source. */ | |
145 | char *password =NULL; /* Password itself. */ | |
146 | char *inkey = NULL; | |
147 | char *signer = NULL; | |
148 | char *chain = NULL; | |
149 | char *ca_path = NULL; | |
150 | char *ca_file = NULL; | |
151 | char *untrusted = NULL; | |
152 | char *engine = NULL; | |
153 | /* Input is ContentInfo instead of TimeStampResp. */ | |
154 | int token_in = 0; | |
155 | /* Output is ContentInfo instead of TimeStampResp. */ | |
156 | int token_out = 0; | |
157 | int free_bio_err = 0; | |
158 | ||
159 | ERR_load_crypto_strings(); | |
160 | apps_startup(); | |
161 | ||
162 | if (bio_err == NULL && (bio_err = BIO_new(BIO_s_file())) != NULL) | |
163 | { | |
164 | free_bio_err = 1; | |
165 | BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); | |
166 | } | |
167 | ||
168 | for (argc--, argv++; argc > 0; argc--, argv++) | |
169 | { | |
170 | if (strcmp(*argv, "-config") == 0) | |
171 | { | |
172 | if (argc-- < 1) goto usage; | |
173 | configfile = *++argv; | |
174 | } | |
175 | else if (strcmp(*argv, "-section") == 0) | |
176 | { | |
177 | if (argc-- < 1) goto usage; | |
178 | section = *++argv; | |
179 | } | |
180 | else if (strcmp(*argv, "-query") == 0) | |
181 | { | |
182 | if (mode != CMD_NONE) goto usage; | |
183 | mode = CMD_QUERY; | |
184 | } | |
185 | else if (strcmp(*argv, "-data") == 0) | |
186 | { | |
187 | if (argc-- < 1) goto usage; | |
188 | data = *++argv; | |
189 | } | |
190 | else if (strcmp(*argv, "-digest") == 0) | |
191 | { | |
192 | if (argc-- < 1) goto usage; | |
193 | digest = *++argv; | |
194 | } | |
c7235be6 UM |
195 | else if (strcmp(*argv, "-rand") == 0) |
196 | { | |
197 | if (argc-- < 1) goto usage; | |
198 | rnd = *++argv; | |
199 | } | |
200 | else if (strcmp(*argv, "-policy") == 0) | |
201 | { | |
202 | if (argc-- < 1) goto usage; | |
203 | policy = *++argv; | |
204 | } | |
205 | else if (strcmp(*argv, "-no_nonce") == 0) | |
206 | { | |
207 | no_nonce = 1; | |
208 | } | |
209 | else if (strcmp(*argv, "-cert") == 0) | |
210 | { | |
211 | cert = 1; | |
212 | } | |
213 | else if (strcmp(*argv, "-in") == 0) | |
214 | { | |
215 | if (argc-- < 1) goto usage; | |
216 | in = *++argv; | |
217 | } | |
218 | else if (strcmp(*argv, "-token_in") == 0) | |
219 | { | |
220 | token_in = 1; | |
221 | } | |
222 | else if (strcmp(*argv, "-out") == 0) | |
223 | { | |
224 | if (argc-- < 1) goto usage; | |
225 | out = *++argv; | |
226 | } | |
227 | else if (strcmp(*argv, "-token_out") == 0) | |
228 | { | |
229 | token_out = 1; | |
230 | } | |
231 | else if (strcmp(*argv, "-text") == 0) | |
232 | { | |
233 | text = 1; | |
234 | } | |
235 | else if (strcmp(*argv, "-reply") == 0) | |
236 | { | |
237 | if (mode != CMD_NONE) goto usage; | |
238 | mode = CMD_REPLY; | |
239 | } | |
240 | else if (strcmp(*argv, "-queryfile") == 0) | |
241 | { | |
242 | if (argc-- < 1) goto usage; | |
243 | queryfile = *++argv; | |
244 | } | |
245 | else if (strcmp(*argv, "-passin") == 0) | |
246 | { | |
247 | if (argc-- < 1) goto usage; | |
248 | passin = *++argv; | |
249 | } | |
250 | else if (strcmp(*argv, "-inkey") == 0) | |
251 | { | |
252 | if (argc-- < 1) goto usage; | |
253 | inkey = *++argv; | |
254 | } | |
255 | else if (strcmp(*argv, "-signer") == 0) | |
256 | { | |
257 | if (argc-- < 1) goto usage; | |
258 | signer = *++argv; | |
259 | } | |
260 | else if (strcmp(*argv, "-chain") == 0) | |
261 | { | |
262 | if (argc-- < 1) goto usage; | |
263 | chain = *++argv; | |
264 | } | |
265 | else if (strcmp(*argv, "-verify") == 0) | |
266 | { | |
267 | if (mode != CMD_NONE) goto usage; | |
268 | mode = CMD_VERIFY; | |
269 | } | |
270 | else if (strcmp(*argv, "-CApath") == 0) | |
271 | { | |
272 | if (argc-- < 1) goto usage; | |
273 | ca_path = *++argv; | |
274 | } | |
275 | else if (strcmp(*argv, "-CAfile") == 0) | |
276 | { | |
277 | if (argc-- < 1) goto usage; | |
278 | ca_file = *++argv; | |
279 | } | |
280 | else if (strcmp(*argv, "-untrusted") == 0) | |
281 | { | |
282 | if (argc-- < 1) goto usage; | |
283 | untrusted = *++argv; | |
284 | } | |
285 | else if (strcmp(*argv, "-engine") == 0) | |
286 | { | |
287 | if (argc-- < 1) goto usage; | |
288 | engine = *++argv; | |
289 | } | |
11503177 UM |
290 | else if ((md = EVP_get_digestbyname(*argv + 1)) != NULL) |
291 | { | |
292 | /* empty. */ | |
293 | } | |
c7235be6 UM |
294 | else |
295 | goto usage; | |
296 | } | |
297 | ||
298 | /* Seed the random number generator if it is going to be used. */ | |
299 | if (mode == CMD_QUERY && !no_nonce) | |
300 | { | |
301 | if (!app_RAND_load_file(NULL, bio_err, 1) && rnd == NULL) | |
302 | BIO_printf(bio_err, "warning, not much extra random " | |
303 | "data, consider using the -rand option\n"); | |
304 | if (rnd != NULL) | |
305 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", | |
306 | app_RAND_load_files(rnd)); | |
307 | } | |
308 | ||
309 | /* Get the password if required. */ | |
310 | if(mode == CMD_REPLY && passin && | |
311 | !app_passwd(bio_err, passin, NULL, &password, NULL)) | |
312 | { | |
313 | BIO_printf(bio_err,"Error getting password.\n"); | |
314 | goto cleanup; | |
315 | } | |
316 | ||
317 | /* Check consistency of parameters and execute | |
318 | the appropriate function. */ | |
319 | switch (mode) | |
320 | { | |
321 | case CMD_NONE: | |
322 | goto usage; | |
323 | case CMD_QUERY: | |
324 | /* Data file and message imprint cannot be specified | |
325 | at the same time. */ | |
326 | ret = data != NULL && digest != NULL; | |
327 | if (ret) goto usage; | |
328 | /* Load the config file for possible policy OIDs. */ | |
329 | conf = load_config_file(configfile); | |
330 | ret = !query_command(data, digest, md, policy, no_nonce, cert, | |
331 | in, out, text); | |
332 | break; | |
333 | case CMD_REPLY: | |
334 | conf = load_config_file(configfile); | |
335 | if (in == NULL) | |
336 | { | |
337 | ret = !(queryfile != NULL && conf != NULL && !token_in); | |
338 | if (ret) goto usage; | |
339 | } | |
340 | else | |
341 | { | |
342 | /* 'in' and 'queryfile' are exclusive. */ | |
343 | ret = !(queryfile == NULL); | |
344 | if (ret) goto usage; | |
345 | } | |
346 | ||
347 | ret = !reply_command(conf, section, engine, queryfile, | |
348 | password, inkey, signer, chain, policy, | |
349 | in, token_in, out, token_out, text); | |
350 | break; | |
351 | case CMD_VERIFY: | |
352 | ret = !(((queryfile && !data && !digest) | |
353 | || (!queryfile && data && !digest) | |
354 | || (!queryfile && !data && digest)) | |
355 | && in != NULL); | |
356 | if (ret) goto usage; | |
357 | ||
358 | ret = !verify_command(data, digest, queryfile, in, token_in, | |
359 | ca_path, ca_file, untrusted); | |
360 | } | |
361 | ||
362 | goto cleanup; | |
363 | ||
364 | usage: | |
365 | BIO_printf(bio_err, "usage:\n" | |
366 | "ts -query [-rand file%cfile%c...] [-config configfile] " | |
367 | "[-data file_to_hash] [-digest digest_bytes]" | |
368 | "[-md2|-md4|-md5|-sha|-sha1|-mdc2|-ripemd160] " | |
369 | "[-policy object_id] [-no_nonce] [-cert] " | |
370 | "[-in request.tsq] [-out request.tsq] [-text]\n", | |
371 | LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); | |
372 | BIO_printf(bio_err, "or\n" | |
373 | "ts -reply [-config configfile] [-section tsa_section] " | |
374 | "[-queryfile request.tsq] [-passin password] " | |
375 | "[-signer tsa_cert.pem] [-inkey private_key.pem] " | |
376 | "[-chain certs_file.pem] [-policy object_id] " | |
377 | "[-in response.tsr] [-token_in] " | |
378 | "[-out response.tsr] [-token_out] [-text] [-engine id]\n"); | |
379 | BIO_printf(bio_err, "or\n" | |
380 | "ts -verify [-data file_to_hash] [-digest digest_bytes] " | |
381 | "[-queryfile request.tsq] " | |
382 | "-in response.tsr [-token_in] " | |
383 | "-CApath ca_path -CAfile ca_file.pem " | |
384 | "-untrusted cert_file.pem\n"); | |
385 | cleanup: | |
386 | /* Clean up. */ | |
387 | app_RAND_write_file(NULL, bio_err); | |
388 | NCONF_free(conf); | |
389 | OPENSSL_free(password); | |
390 | OBJ_cleanup(); | |
391 | if (free_bio_err) | |
392 | { | |
393 | BIO_free_all(bio_err); | |
394 | bio_err = NULL; | |
395 | } | |
396 | ||
397 | OPENSSL_EXIT(ret); | |
398 | } | |
399 | ||
400 | /* | |
401 | * Configuration file-related function definitions. | |
402 | */ | |
403 | ||
404 | static ASN1_OBJECT *txt2obj(const char *oid) | |
405 | { | |
406 | ASN1_OBJECT *oid_obj = NULL; | |
407 | ||
408 | if (!(oid_obj = OBJ_txt2obj(oid, 0))) | |
409 | BIO_printf(bio_err, "cannot convert %s to OID\n", oid); | |
410 | ||
411 | return oid_obj; | |
412 | } | |
413 | ||
414 | static CONF *load_config_file(const char *configfile) | |
415 | { | |
416 | CONF *conf = NULL; | |
417 | long errorline = -1; | |
418 | ||
419 | if (!configfile) configfile = getenv("OPENSSL_CONF"); | |
420 | if (!configfile) configfile = getenv("SSLEAY_CONF"); | |
421 | ||
422 | if (configfile && | |
423 | (!(conf = NCONF_new(NULL)) || | |
424 | NCONF_load(conf, configfile, &errorline) <= 0)) | |
425 | { | |
426 | if (errorline <= 0) | |
427 | BIO_printf(bio_err, "error loading the config file " | |
428 | "'%s'\n", configfile); | |
429 | else | |
430 | BIO_printf(bio_err, "error on line %ld of config file " | |
431 | "'%s'\n", errorline, configfile); | |
432 | } | |
433 | ||
434 | if (conf != NULL) | |
435 | { | |
436 | const char *p; | |
437 | ||
438 | BIO_printf(bio_err,"Using configuration from %s\n", configfile); | |
439 | p = NCONF_get_string(conf, NULL, ENV_OID_FILE); | |
440 | if (p != NULL) | |
441 | { | |
442 | BIO *oid_bio = BIO_new_file(p, "r"); | |
443 | if (!oid_bio) | |
444 | ERR_print_errors(bio_err); | |
445 | else | |
446 | { | |
447 | OBJ_create_objects(oid_bio); | |
448 | BIO_free_all(oid_bio); | |
449 | } | |
450 | } | |
451 | else | |
452 | ERR_clear_error(); | |
453 | if(!add_oid_section(bio_err, conf)) | |
454 | ERR_print_errors(bio_err); | |
455 | } | |
456 | return conf; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Query-related method definitions. | |
461 | */ | |
462 | ||
463 | static int query_command(const char *data, char *digest, const EVP_MD *md, | |
464 | const char *policy, int no_nonce, | |
465 | int cert, const char *in, const char *out, int text) | |
466 | { | |
467 | int ret = 0; | |
468 | TS_REQ *query = NULL; | |
469 | BIO *in_bio = NULL; | |
470 | BIO *data_bio = NULL; | |
471 | BIO *out_bio = NULL; | |
472 | ||
473 | /* Build query object either from file or from scratch. */ | |
474 | if (in != NULL) | |
475 | { | |
476 | if ((in_bio = BIO_new_file(in, "rb")) == NULL) goto end; | |
477 | query = d2i_TS_REQ_bio(in_bio, NULL); | |
478 | } | |
479 | else | |
480 | { | |
481 | /* Open the file if no explicit digest bytes were specified. */ | |
482 | if (!digest | |
483 | && !(data_bio = BIO_open_with_default(data, "rb", stdin))) | |
484 | goto end; | |
485 | /* Creating the query object. */ | |
486 | query = create_query(data_bio, digest, md, | |
487 | policy, no_nonce, cert); | |
488 | /* Saving the random number generator state. */ | |
489 | } | |
490 | if (query == NULL) goto end; | |
491 | ||
492 | /* Write query either in ASN.1 or in text format. */ | |
493 | if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL) | |
494 | goto end; | |
495 | if (text) | |
496 | { | |
497 | /* Text output. */ | |
498 | if (!TS_REQ_print_bio(out_bio, query)) | |
499 | goto end; | |
500 | } | |
501 | else | |
502 | { | |
503 | /* ASN.1 output. */ | |
504 | if (!i2d_TS_REQ_bio(out_bio, query)) | |
505 | goto end; | |
506 | } | |
507 | ||
508 | ret = 1; | |
509 | ||
510 | end: | |
511 | ERR_print_errors(bio_err); | |
512 | ||
513 | /* Clean up. */ | |
514 | BIO_free_all(in_bio); | |
515 | BIO_free_all(data_bio); | |
516 | BIO_free_all(out_bio); | |
517 | TS_REQ_free(query); | |
518 | ||
519 | return ret; | |
520 | } | |
521 | ||
522 | static BIO *BIO_open_with_default(const char *file, const char *mode, | |
523 | FILE *default_fp) | |
524 | { | |
525 | return file == NULL ? | |
526 | BIO_new_fp(default_fp, BIO_NOCLOSE) | |
527 | : BIO_new_file(file, mode); | |
528 | } | |
529 | ||
530 | static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md, | |
531 | const char *policy, int no_nonce, int cert) | |
532 | { | |
533 | int ret = 0; | |
534 | TS_REQ *ts_req = NULL; | |
535 | int len; | |
536 | TS_MSG_IMPRINT *msg_imprint = NULL; | |
537 | X509_ALGOR *algo = NULL; | |
538 | unsigned char *data = NULL; | |
539 | ASN1_OBJECT *policy_obj = NULL; | |
540 | ASN1_INTEGER *nonce_asn1 = NULL; | |
541 | ||
542 | /* Setting default message digest. */ | |
543 | if (!md && !(md = EVP_get_digestbyname("sha1"))) goto err; | |
544 | ||
545 | /* Creating request object. */ | |
546 | if (!(ts_req = TS_REQ_new())) goto err; | |
547 | ||
548 | /* Setting version. */ | |
549 | if (!TS_REQ_set_version(ts_req, 1)) goto err; | |
550 | ||
551 | /* Creating and adding MSG_IMPRINT object. */ | |
552 | if (!(msg_imprint = TS_MSG_IMPRINT_new())) goto err; | |
553 | ||
554 | /* Adding algorithm. */ | |
555 | if (!(algo = X509_ALGOR_new())) goto err; | |
556 | if (!(algo->algorithm = OBJ_nid2obj(EVP_MD_type(md)))) goto err; | |
557 | if (!(algo->parameter = ASN1_TYPE_new())) goto err; | |
558 | algo->parameter->type = V_ASN1_NULL; | |
559 | if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo)) goto err; | |
560 | ||
561 | /* Adding message digest. */ | |
562 | if ((len = create_digest(data_bio, digest, md, &data)) == 0) | |
563 | goto err; | |
564 | if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len)) goto err; | |
565 | ||
566 | if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint)) goto err; | |
567 | ||
568 | /* Setting policy if requested. */ | |
569 | if (policy && !(policy_obj = txt2obj(policy))) goto err; | |
570 | if (policy_obj && !TS_REQ_set_policy_id(ts_req, policy_obj)) goto err; | |
571 | ||
572 | /* Setting nonce if requested. */ | |
573 | if (!no_nonce && !(nonce_asn1 = create_nonce(NONCE_LENGTH))) goto err; | |
574 | if (nonce_asn1 && !TS_REQ_set_nonce(ts_req, nonce_asn1)) goto err; | |
575 | ||
576 | /* Setting certificate request flag if requested. */ | |
577 | if (!TS_REQ_set_cert_req(ts_req, cert)) goto err; | |
578 | ||
579 | ret = 1; | |
580 | err: | |
581 | if (!ret) | |
582 | { | |
583 | TS_REQ_free(ts_req); | |
584 | ts_req = NULL; | |
585 | BIO_printf(bio_err, "could not create query\n"); | |
586 | } | |
587 | TS_MSG_IMPRINT_free(msg_imprint); | |
588 | X509_ALGOR_free(algo); | |
589 | OPENSSL_free(data); | |
590 | ASN1_OBJECT_free(policy_obj); | |
591 | ASN1_INTEGER_free(nonce_asn1); | |
592 | return ts_req; | |
593 | } | |
594 | ||
595 | static int create_digest(BIO *input, char *digest, const EVP_MD *md, | |
596 | unsigned char **md_value) | |
597 | { | |
598 | int md_value_len; | |
599 | ||
600 | md_value_len = EVP_MD_size(md); | |
0eab41fb BL |
601 | if (md_value_len < 0) |
602 | goto err; | |
c7235be6 UM |
603 | if (input) |
604 | { | |
605 | /* Digest must be computed from an input file. */ | |
606 | EVP_MD_CTX md_ctx; | |
607 | unsigned char buffer[4096]; | |
608 | int length; | |
609 | ||
610 | *md_value = OPENSSL_malloc(md_value_len); | |
611 | if (*md_value == 0) goto err; | |
612 | ||
613 | EVP_DigestInit(&md_ctx, md); | |
614 | while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) | |
615 | { | |
616 | EVP_DigestUpdate(&md_ctx, buffer, length); | |
617 | } | |
618 | EVP_DigestFinal(&md_ctx, *md_value, NULL); | |
619 | } | |
620 | else | |
621 | { | |
622 | /* Digest bytes are specified with digest. */ | |
623 | long digest_len; | |
624 | *md_value = string_to_hex(digest, &digest_len); | |
625 | if (!*md_value || md_value_len != digest_len) | |
626 | { | |
627 | OPENSSL_free(*md_value); | |
628 | *md_value = NULL; | |
629 | BIO_printf(bio_err, "bad digest, %d bytes " | |
630 | "must be specified\n", md_value_len); | |
631 | goto err; | |
632 | } | |
633 | } | |
634 | ||
635 | return md_value_len; | |
636 | err: | |
637 | return 0; | |
638 | } | |
639 | ||
640 | static ASN1_INTEGER *create_nonce(int bits) | |
641 | { | |
642 | unsigned char buf[20]; | |
643 | ASN1_INTEGER *nonce = NULL; | |
644 | int len = (bits - 1) / 8 + 1; | |
645 | int i; | |
646 | ||
647 | /* Generating random byte sequence. */ | |
648 | if (len > (int)sizeof(buf)) goto err; | |
649 | if (!RAND_bytes(buf, len)) goto err; | |
650 | ||
651 | /* Find the first non-zero byte and creating ASN1_INTEGER object. */ | |
652 | for (i = 0; i < len && !buf[i]; ++i); | |
653 | if (!(nonce = ASN1_INTEGER_new())) goto err; | |
654 | OPENSSL_free(nonce->data); | |
655 | /* Allocate at least one byte. */ | |
656 | nonce->length = len - i; | |
657 | if (!(nonce->data = OPENSSL_malloc(nonce->length + 1))) goto err; | |
658 | memcpy(nonce->data, buf + i, nonce->length); | |
659 | ||
660 | return nonce; | |
661 | err: | |
662 | BIO_printf(bio_err, "could not create nonce\n"); | |
663 | ASN1_INTEGER_free(nonce); | |
664 | return NULL; | |
665 | } | |
666 | /* | |
667 | * Reply-related method definitions. | |
668 | */ | |
669 | ||
670 | static int reply_command(CONF *conf, char *section, char *engine, | |
671 | char *queryfile, char *passin, char *inkey, | |
672 | char *signer, char *chain, const char *policy, | |
673 | char *in, int token_in, | |
674 | char *out, int token_out, int text) | |
675 | { | |
676 | int ret = 0; | |
677 | TS_RESP *response = NULL; | |
678 | BIO *in_bio = NULL; | |
679 | BIO *query_bio = NULL; | |
680 | BIO *inkey_bio = NULL; | |
681 | BIO *signer_bio = NULL; | |
682 | BIO *out_bio = NULL; | |
683 | ||
684 | /* Build response object either from response or query. */ | |
685 | if (in != NULL) | |
686 | { | |
687 | if ((in_bio = BIO_new_file(in, "rb")) == NULL) goto end; | |
688 | if (token_in) | |
689 | { | |
690 | /* We have a ContentInfo (PKCS7) object, add | |
691 | 'granted' status info around it. */ | |
692 | response = read_PKCS7(in_bio); | |
693 | } | |
694 | else | |
695 | { | |
696 | /* We have a ready-made TS_RESP object. */ | |
697 | response = d2i_TS_RESP_bio(in_bio, NULL); | |
698 | } | |
699 | } | |
700 | else | |
701 | { | |
702 | response = create_response(conf, section, engine, queryfile, | |
703 | passin, inkey, signer, chain, | |
704 | policy); | |
705 | if (response) | |
706 | BIO_printf(bio_err, "Response has been generated.\n"); | |
707 | else | |
708 | BIO_printf(bio_err, "Response is not generated.\n"); | |
709 | } | |
710 | if (response == NULL) goto end; | |
711 | ||
712 | /* Write response either in ASN.1 or text format. */ | |
713 | if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL) | |
714 | goto end; | |
715 | if (text) | |
716 | { | |
717 | /* Text output. */ | |
718 | if (token_out) | |
719 | { | |
720 | TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response); | |
721 | if (!TS_TST_INFO_print_bio(out_bio, tst_info)) goto end; | |
722 | } | |
723 | else | |
724 | { | |
725 | if (!TS_RESP_print_bio(out_bio, response)) goto end; | |
726 | } | |
727 | } | |
728 | else | |
729 | { | |
730 | /* ASN.1 DER output. */ | |
731 | if (token_out) | |
732 | { | |
733 | PKCS7 *token = TS_RESP_get_token(response); | |
734 | if (!i2d_PKCS7_bio(out_bio, token)) goto end; | |
735 | } | |
736 | else | |
737 | { | |
738 | if (!i2d_TS_RESP_bio(out_bio, response)) goto end; | |
739 | } | |
740 | } | |
741 | ||
742 | ret = 1; | |
743 | ||
744 | end: | |
745 | ERR_print_errors(bio_err); | |
746 | ||
747 | /* Clean up. */ | |
748 | BIO_free_all(in_bio); | |
749 | BIO_free_all(query_bio); | |
750 | BIO_free_all(inkey_bio); | |
751 | BIO_free_all(signer_bio); | |
752 | BIO_free_all(out_bio); | |
753 | TS_RESP_free(response); | |
754 | ||
755 | return ret; | |
756 | } | |
757 | ||
758 | /* Reads a PKCS7 token and adds default 'granted' status info to it. */ | |
759 | static TS_RESP *read_PKCS7(BIO *in_bio) | |
760 | { | |
761 | int ret = 0; | |
762 | PKCS7 *token = NULL; | |
763 | TS_TST_INFO *tst_info = NULL; | |
764 | TS_RESP *resp = NULL; | |
765 | TS_STATUS_INFO *si = NULL; | |
766 | ||
767 | /* Read PKCS7 object and extract the signed time stamp info. */ | |
768 | if (!(token = d2i_PKCS7_bio(in_bio, NULL))) goto end; | |
769 | if (!(tst_info = PKCS7_to_TS_TST_INFO(token))) goto end; | |
770 | ||
771 | /* Creating response object. */ | |
772 | if (!(resp = TS_RESP_new())) goto end; | |
773 | ||
774 | /* Create granted status info. */ | |
775 | if (!(si = TS_STATUS_INFO_new())) goto end; | |
776 | if (!(ASN1_INTEGER_set(si->status, TS_STATUS_GRANTED))) goto end; | |
777 | if (!TS_RESP_set_status_info(resp, si)) goto end; | |
778 | ||
779 | /* Setting encapsulated token. */ | |
780 | TS_RESP_set_tst_info(resp, token, tst_info); | |
781 | token = NULL; /* Ownership is lost. */ | |
782 | tst_info = NULL; /* Ownership is lost. */ | |
783 | ||
784 | ret = 1; | |
785 | end: | |
786 | PKCS7_free(token); | |
787 | TS_TST_INFO_free(tst_info); | |
788 | if (!ret) | |
789 | { | |
790 | TS_RESP_free(resp); | |
791 | resp = NULL; | |
792 | } | |
793 | TS_STATUS_INFO_free(si); | |
794 | return resp; | |
795 | } | |
796 | ||
797 | static TS_RESP *create_response(CONF *conf, const char *section, char *engine, | |
798 | char *queryfile, char *passin, char *inkey, | |
799 | char *signer, char *chain, const char *policy) | |
800 | { | |
801 | int ret = 0; | |
802 | TS_RESP *response = NULL; | |
803 | BIO *query_bio = NULL; | |
804 | TS_RESP_CTX *resp_ctx = NULL; | |
805 | ||
806 | if (!(query_bio = BIO_new_file(queryfile, "rb"))) | |
807 | goto end; | |
808 | ||
809 | /* Getting TSA configuration section. */ | |
810 | if (!(section = TS_CONF_get_tsa_section(conf, section))) | |
811 | goto end; | |
812 | ||
813 | /* Setting up response generation context. */ | |
814 | if (!(resp_ctx = TS_RESP_CTX_new())) goto end; | |
815 | ||
816 | /* Setting serial number provider callback. */ | |
817 | if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx)) goto end; | |
70531c14 | 818 | #ifndef OPENSSL_NO_ENGINE |
c7235be6 UM |
819 | /* Setting default OpenSSL engine. */ |
820 | if (!TS_CONF_set_crypto_device(conf, section, engine)) goto end; | |
70531c14 | 821 | #endif |
c7235be6 UM |
822 | |
823 | /* Setting TSA signer certificate. */ | |
824 | if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx)) goto end; | |
825 | ||
826 | /* Setting TSA signer certificate chain. */ | |
827 | if (!TS_CONF_set_certs(conf, section, chain, resp_ctx)) goto end; | |
828 | ||
829 | /* Setting TSA signer private key. */ | |
830 | if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx)) | |
831 | goto end; | |
832 | ||
833 | /* Setting default policy OID. */ | |
834 | if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx)) goto end; | |
835 | ||
836 | /* Setting acceptable policy OIDs. */ | |
837 | if (!TS_CONF_set_policies(conf, section, resp_ctx)) goto end; | |
838 | ||
839 | /* Setting the acceptable one-way hash algorithms. */ | |
840 | if (!TS_CONF_set_digests(conf, section, resp_ctx)) goto end; | |
841 | ||
842 | /* Setting guaranteed time stamp accuracy. */ | |
843 | if (!TS_CONF_set_accuracy(conf, section, resp_ctx)) goto end; | |
844 | ||
845 | /* Setting the precision of the time. */ | |
846 | if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx)) | |
847 | goto end; | |
848 | ||
849 | /* Setting the ordering flaf if requested. */ | |
850 | if (!TS_CONF_set_ordering(conf, section, resp_ctx)) goto end; | |
851 | ||
852 | /* Setting the TSA name required flag if requested. */ | |
853 | if (!TS_CONF_set_tsa_name(conf, section, resp_ctx)) goto end; | |
854 | ||
855 | /* Setting the ESS cert id chain flag if requested. */ | |
856 | if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx)) goto end; | |
857 | ||
858 | /* Creating the response. */ | |
859 | if (!(response = TS_RESP_create_response(resp_ctx, query_bio))) | |
860 | goto end; | |
861 | ||
862 | ret = 1; | |
863 | end: | |
864 | if (!ret) | |
865 | { | |
866 | TS_RESP_free(response); | |
867 | response = NULL; | |
868 | } | |
869 | TS_RESP_CTX_free(resp_ctx); | |
870 | BIO_free_all(query_bio); | |
871 | ||
872 | return response; | |
873 | } | |
874 | ||
875 | static ASN1_INTEGER * MS_CALLBACK serial_cb(TS_RESP_CTX *ctx, void *data) | |
876 | { | |
877 | const char *serial_file = (const char *) data; | |
878 | ASN1_INTEGER *serial = next_serial(serial_file); | |
879 | ||
880 | if (!serial) | |
881 | { | |
882 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
883 | "Error during serial number " | |
884 | "generation."); | |
885 | TS_RESP_CTX_add_failure_info(ctx, | |
886 | TS_INFO_ADD_INFO_NOT_AVAILABLE); | |
887 | } | |
888 | else | |
889 | save_ts_serial(serial_file, serial); | |
890 | ||
891 | return serial; | |
892 | } | |
893 | ||
894 | static ASN1_INTEGER *next_serial(const char *serialfile) | |
895 | { | |
896 | int ret = 0; | |
897 | BIO *in = NULL; | |
898 | ASN1_INTEGER *serial = NULL; | |
899 | BIGNUM *bn = NULL; | |
900 | ||
901 | if (!(serial = ASN1_INTEGER_new())) goto err; | |
902 | ||
903 | if (!(in = BIO_new_file(serialfile, "r"))) | |
904 | { | |
905 | ERR_clear_error(); | |
906 | BIO_printf(bio_err, "Warning: could not open file %s for " | |
907 | "reading, using serial number: 1\n", serialfile); | |
908 | if (!ASN1_INTEGER_set(serial, 1)) goto err; | |
909 | } | |
910 | else | |
911 | { | |
912 | char buf[1024]; | |
913 | if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) | |
914 | { | |
915 | BIO_printf(bio_err, "unable to load number from %s\n", | |
916 | serialfile); | |
917 | goto err; | |
918 | } | |
919 | if (!(bn = ASN1_INTEGER_to_BN(serial, NULL))) goto err; | |
920 | ASN1_INTEGER_free(serial); | |
921 | serial = NULL; | |
922 | if (!BN_add_word(bn, 1)) goto err; | |
923 | if (!(serial = BN_to_ASN1_INTEGER(bn, NULL))) goto err; | |
924 | } | |
925 | ret = 1; | |
926 | err: | |
927 | if (!ret) | |
928 | { | |
929 | ASN1_INTEGER_free(serial); | |
930 | serial = NULL; | |
931 | } | |
932 | BIO_free_all(in); | |
933 | BN_free(bn); | |
934 | return serial; | |
935 | } | |
936 | ||
937 | static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial) | |
938 | { | |
939 | int ret = 0; | |
940 | BIO *out = NULL; | |
941 | ||
942 | if (!(out = BIO_new_file(serialfile, "w"))) goto err; | |
943 | if (i2a_ASN1_INTEGER(out, serial) <= 0) goto err; | |
944 | if (BIO_puts(out, "\n") <= 0) goto err; | |
945 | ret = 1; | |
946 | err: | |
947 | if (!ret) | |
948 | BIO_printf(bio_err, "could not save serial number to %s\n", | |
949 | serialfile); | |
950 | BIO_free_all(out); | |
951 | return ret; | |
952 | } | |
953 | ||
954 | /* | |
955 | * Verify-related method definitions. | |
956 | */ | |
957 | ||
958 | static int verify_command(char *data, char *digest, char *queryfile, | |
959 | char *in, int token_in, | |
960 | char *ca_path, char *ca_file, char *untrusted) | |
961 | { | |
962 | BIO *in_bio = NULL; | |
963 | PKCS7 *token = NULL; | |
964 | TS_RESP *response = NULL; | |
965 | TS_VERIFY_CTX *verify_ctx = NULL; | |
966 | int ret = 0; | |
967 | ||
968 | /* Decode the token (PKCS7) or response (TS_RESP) files. */ | |
969 | if (!(in_bio = BIO_new_file(in, "rb"))) goto end; | |
970 | if (token_in) | |
971 | { | |
972 | if (!(token = d2i_PKCS7_bio(in_bio, NULL))) goto end; | |
973 | } | |
974 | else | |
975 | { | |
976 | if (!(response = d2i_TS_RESP_bio(in_bio, NULL))) goto end; | |
977 | } | |
978 | ||
979 | if (!(verify_ctx = create_verify_ctx(data, digest, queryfile, | |
980 | ca_path, ca_file, untrusted))) | |
981 | goto end; | |
982 | ||
983 | /* Checking the token or response against the request. */ | |
984 | ret = token_in ? | |
985 | TS_RESP_verify_token(verify_ctx, token) : | |
986 | TS_RESP_verify_response(verify_ctx, response); | |
987 | ||
988 | end: | |
989 | printf("Verification: "); | |
990 | if (ret) | |
991 | printf("OK\n"); | |
992 | else | |
993 | { | |
994 | printf("FAILED\n"); | |
995 | /* Print errors, if there are any. */ | |
996 | ERR_print_errors(bio_err); | |
997 | } | |
998 | ||
999 | /* Clean up. */ | |
1000 | BIO_free_all(in_bio); | |
1001 | PKCS7_free(token); | |
1002 | TS_RESP_free(response); | |
1003 | TS_VERIFY_CTX_free(verify_ctx); | |
1004 | return ret; | |
1005 | } | |
1006 | ||
1007 | static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest, | |
1008 | char *queryfile, | |
1009 | char *ca_path, char *ca_file, | |
1010 | char *untrusted) | |
1011 | { | |
1012 | TS_VERIFY_CTX *ctx = NULL; | |
1013 | BIO *input = NULL; | |
1014 | TS_REQ *request = NULL; | |
1015 | int ret = 0; | |
1016 | ||
1017 | if (data != NULL || digest != NULL) | |
1018 | { | |
1019 | if (!(ctx = TS_VERIFY_CTX_new())) goto err; | |
1020 | ctx->flags = TS_VFY_VERSION | TS_VFY_SIGNER; | |
1021 | if (data != NULL) | |
1022 | { | |
1023 | ctx->flags |= TS_VFY_DATA; | |
1024 | if (!(ctx->data = BIO_new_file(data, "rb"))) goto err; | |
1025 | } | |
1026 | else if (digest != NULL) | |
1027 | { | |
1028 | long imprint_len; | |
1029 | ctx->flags |= TS_VFY_IMPRINT; | |
1030 | if (!(ctx->imprint = string_to_hex(digest, | |
1031 | &imprint_len))) | |
1032 | { | |
1033 | BIO_printf(bio_err, "invalid digest string\n"); | |
1034 | goto err; | |
1035 | } | |
1036 | ctx->imprint_len = imprint_len; | |
1037 | } | |
1038 | ||
1039 | } | |
1040 | else if (queryfile != NULL) | |
1041 | { | |
1042 | /* The request has just to be read, decoded and converted to | |
1043 | a verify context object. */ | |
1044 | if (!(input = BIO_new_file(queryfile, "rb"))) goto err; | |
1045 | if (!(request = d2i_TS_REQ_bio(input, NULL))) goto err; | |
1046 | if (!(ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL))) goto err; | |
1047 | } | |
b4e88ccb NL |
1048 | else |
1049 | return NULL; | |
c7235be6 UM |
1050 | |
1051 | /* Add the signature verification flag and arguments. */ | |
1052 | ctx->flags |= TS_VFY_SIGNATURE; | |
1053 | ||
1054 | /* Initialising the X509_STORE object. */ | |
1055 | if (!(ctx->store = create_cert_store(ca_path, ca_file))) goto err; | |
1056 | ||
1057 | /* Loading untrusted certificates. */ | |
1058 | if (untrusted && !(ctx->certs = TS_CONF_load_certs(untrusted))) | |
1059 | goto err; | |
1060 | ||
1061 | ret = 1; | |
1062 | err: | |
1063 | if (!ret) | |
1064 | { | |
1065 | TS_VERIFY_CTX_free(ctx); | |
1066 | ctx = NULL; | |
1067 | } | |
1068 | BIO_free_all(input); | |
1069 | TS_REQ_free(request); | |
1070 | return ctx; | |
1071 | } | |
1072 | ||
1073 | static X509_STORE *create_cert_store(char *ca_path, char *ca_file) | |
1074 | { | |
1075 | X509_STORE *cert_ctx = NULL; | |
1076 | X509_LOOKUP *lookup = NULL; | |
1077 | int i; | |
1078 | ||
1079 | /* Creating the X509_STORE object. */ | |
1080 | cert_ctx = X509_STORE_new(); | |
1081 | ||
1082 | /* Setting the callback for certificate chain verification. */ | |
1083 | X509_STORE_set_verify_cb_func(cert_ctx, verify_cb); | |
1084 | ||
1085 | /* Adding a trusted certificate directory source. */ | |
1086 | if (ca_path) | |
1087 | { | |
1088 | lookup = X509_STORE_add_lookup(cert_ctx, | |
1089 | X509_LOOKUP_hash_dir()); | |
1090 | if (lookup == NULL) | |
1091 | { | |
1092 | BIO_printf(bio_err, "memory allocation failure\n"); | |
1093 | goto err; | |
1094 | } | |
1095 | i = X509_LOOKUP_add_dir(lookup, ca_path, X509_FILETYPE_PEM); | |
1096 | if (!i) | |
1097 | { | |
1098 | BIO_printf(bio_err, "Error loading directory %s\n", | |
1099 | ca_path); | |
1100 | goto err; | |
1101 | } | |
1102 | } | |
1103 | ||
1104 | /* Adding a trusted certificate file source. */ | |
1105 | if (ca_file) | |
1106 | { | |
1107 | lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file()); | |
1108 | if (lookup == NULL) | |
1109 | { | |
1110 | BIO_printf(bio_err, "memory allocation failure\n"); | |
1111 | goto err; | |
1112 | } | |
1113 | i = X509_LOOKUP_load_file(lookup, ca_file, X509_FILETYPE_PEM); | |
1114 | if (!i) | |
1115 | { | |
1116 | BIO_printf(bio_err, "Error loading file %s\n", ca_file); | |
1117 | goto err; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | return cert_ctx; | |
1122 | err: | |
1123 | X509_STORE_free(cert_ctx); | |
1124 | return NULL; | |
1125 | } | |
1126 | ||
1127 | static int MS_CALLBACK verify_cb(int ok, X509_STORE_CTX *ctx) | |
1128 | { | |
1129 | /* | |
1130 | char buf[256]; | |
1131 | ||
1132 | if (!ok) | |
1133 | { | |
1134 | X509_NAME_oneline(X509_get_subject_name(ctx->current_cert), | |
1135 | buf, sizeof(buf)); | |
1136 | printf("%s\n", buf); | |
1137 | printf("error %d at %d depth lookup: %s\n", | |
1138 | ctx->error, ctx->error_depth, | |
1139 | X509_verify_cert_error_string(ctx->error)); | |
1140 | } | |
1141 | */ | |
1142 | ||
1143 | return ok; | |
1144 | } |