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d3819813 MTL |
1 | /* crypto/ts/ts_resp_sign.c */ |
2 | /* | |
3 | * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project | |
4 | * 2002. | |
5 | */ | |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * | |
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. | |
20 | * | |
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/)" | |
25 | * | |
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. | |
30 | * | |
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. | |
34 | * | |
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/)" | |
39 | * | |
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 | * ==================================================================== | |
53 | * | |
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). | |
57 | * | |
58 | */ | |
59 | ||
60 | #include "cryptlib.h" | |
61 | ||
62 | #if defined(OPENSSL_SYS_UNIX) | |
63 | # include <sys/time.h> | |
64 | #endif | |
65 | ||
66 | #include <openssl/objects.h> | |
67 | #include <openssl/ts.h> | |
68 | #include <openssl/pkcs7.h> | |
69 | ||
70 | /* Private function declarations. */ | |
71 | ||
72 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *); | |
73 | static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec); | |
74 | static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *); | |
75 | ||
76 | static void TS_RESP_CTX_init(TS_RESP_CTX *ctx); | |
77 | static void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx); | |
78 | static int TS_RESP_check_request(TS_RESP_CTX *ctx); | |
79 | static ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx); | |
80 | static TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx, | |
81 | ASN1_OBJECT *policy); | |
82 | static int TS_RESP_process_extensions(TS_RESP_CTX *ctx); | |
83 | static int TS_RESP_sign(TS_RESP_CTX *ctx); | |
84 | ||
85 | static ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert, | |
86 | STACK_OF(X509) *certs); | |
87 | static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed); | |
88 | static int TS_TST_INFO_content_new(PKCS7 *p7); | |
89 | static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc); | |
90 | ||
91 | static ASN1_GENERALIZEDTIME | |
92 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long, | |
93 | unsigned); | |
94 | ||
95 | /* Default callbacks for response generation. */ | |
96 | ||
97 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data) | |
98 | { | |
99 | ASN1_INTEGER *serial = ASN1_INTEGER_new(); | |
100 | if (!serial) | |
101 | goto err; | |
102 | if (!ASN1_INTEGER_set(serial, 1)) | |
103 | goto err; | |
104 | return serial; | |
105 | err: | |
106 | TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE); | |
107 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
108 | "Error during serial number generation."); | |
109 | return NULL; | |
110 | } | |
111 | ||
112 | #if defined(OPENSSL_SYS_UNIX) | |
113 | ||
114 | /* Use the gettimeofday function call. */ | |
115 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, | |
116 | long *sec, long *usec) | |
117 | { | |
118 | struct timeval tv; | |
119 | if (gettimeofday(&tv, NULL) != 0) { | |
120 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
121 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
122 | "Time is not available."); | |
123 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
124 | return 0; | |
125 | } | |
126 | /* Return time to caller. */ | |
127 | *sec = tv.tv_sec; | |
128 | *usec = tv.tv_usec; | |
129 | ||
130 | return 1; | |
131 | } | |
132 | ||
133 | #else | |
134 | ||
135 | /* Use the time function call that provides only seconds precision. */ | |
136 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, | |
137 | long *sec, long *usec) | |
138 | { | |
139 | time_t t; | |
140 | if (time(&t) == (time_t)-1) { | |
141 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
142 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
143 | "Time is not available."); | |
144 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
145 | return 0; | |
146 | } | |
147 | /* Return time to caller, only second precision. */ | |
148 | *sec = (long)t; | |
149 | *usec = 0; | |
150 | ||
151 | return 1; | |
152 | } | |
153 | ||
154 | #endif | |
155 | ||
156 | static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, | |
157 | void *data) | |
158 | { | |
159 | /* No extensions are processed here. */ | |
160 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
161 | "Unsupported extension."); | |
162 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | /* TS_RESP_CTX management functions. */ | |
167 | ||
168 | TS_RESP_CTX *TS_RESP_CTX_new() | |
169 | { | |
170 | TS_RESP_CTX *ctx; | |
171 | ||
172 | if (!(ctx = (TS_RESP_CTX *)OPENSSL_malloc(sizeof(TS_RESP_CTX)))) { | |
173 | TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE); | |
174 | return NULL; | |
175 | } | |
176 | memset(ctx, 0, sizeof(TS_RESP_CTX)); | |
177 | ||
178 | /* Setting default callbacks. */ | |
179 | ctx->serial_cb = def_serial_cb; | |
180 | ctx->time_cb = def_time_cb; | |
181 | ctx->extension_cb = def_extension_cb; | |
182 | ||
183 | return ctx; | |
184 | } | |
185 | ||
186 | void TS_RESP_CTX_free(TS_RESP_CTX *ctx) | |
187 | { | |
188 | if (!ctx) | |
189 | return; | |
190 | ||
191 | X509_free(ctx->signer_cert); | |
192 | EVP_PKEY_free(ctx->signer_key); | |
193 | sk_X509_pop_free(ctx->certs, X509_free); | |
194 | sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free); | |
195 | ASN1_OBJECT_free(ctx->default_policy); | |
196 | sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */ | |
197 | ASN1_INTEGER_free(ctx->seconds); | |
198 | ASN1_INTEGER_free(ctx->millis); | |
199 | ASN1_INTEGER_free(ctx->micros); | |
200 | OPENSSL_free(ctx); | |
201 | } | |
202 | ||
203 | int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer) | |
204 | { | |
205 | if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) { | |
206 | TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT, | |
207 | TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE); | |
208 | return 0; | |
209 | } | |
210 | if (ctx->signer_cert) | |
211 | X509_free(ctx->signer_cert); | |
212 | ctx->signer_cert = signer; | |
213 | CRYPTO_add(&ctx->signer_cert->references, +1, CRYPTO_LOCK_X509); | |
214 | return 1; | |
215 | } | |
216 | ||
217 | int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key) | |
218 | { | |
219 | if (ctx->signer_key) | |
220 | EVP_PKEY_free(ctx->signer_key); | |
221 | ctx->signer_key = key; | |
222 | CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY); | |
223 | ||
224 | return 1; | |
225 | } | |
226 | ||
227 | int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *def_policy) | |
228 | { | |
229 | if (ctx->default_policy) | |
230 | ASN1_OBJECT_free(ctx->default_policy); | |
231 | if (!(ctx->default_policy = OBJ_dup(def_policy))) | |
232 | goto err; | |
233 | return 1; | |
234 | err: | |
235 | TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE); | |
236 | return 0; | |
237 | } | |
238 | ||
239 | int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs) | |
240 | { | |
241 | ||
242 | if (ctx->certs) { | |
243 | sk_X509_pop_free(ctx->certs, X509_free); | |
244 | ctx->certs = NULL; | |
245 | } | |
246 | if (!certs) | |
247 | return 1; | |
248 | if (!(ctx->certs = X509_chain_up_ref(certs))) { | |
249 | TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | return 1; | |
254 | } | |
255 | ||
256 | int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *policy) | |
257 | { | |
258 | ASN1_OBJECT *copy = NULL; | |
259 | ||
260 | /* Create new policy stack if necessary. */ | |
261 | if (!ctx->policies && !(ctx->policies = sk_ASN1_OBJECT_new_null())) | |
262 | goto err; | |
263 | if (!(copy = OBJ_dup(policy))) | |
264 | goto err; | |
265 | if (!sk_ASN1_OBJECT_push(ctx->policies, copy)) | |
266 | goto err; | |
267 | ||
268 | return 1; | |
269 | err: | |
270 | TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE); | |
271 | ASN1_OBJECT_free(copy); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md) | |
276 | { | |
277 | /* Create new md stack if necessary. */ | |
278 | if (!ctx->mds && !(ctx->mds = sk_EVP_MD_new_null())) | |
279 | goto err; | |
280 | /* Add the shared md, no copy needed. */ | |
281 | if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md)) | |
282 | goto err; | |
283 | ||
284 | return 1; | |
285 | err: | |
286 | TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | #define TS_RESP_CTX_accuracy_free(ctx) \ | |
291 | ASN1_INTEGER_free(ctx->seconds); \ | |
292 | ctx->seconds = NULL; \ | |
293 | ASN1_INTEGER_free(ctx->millis); \ | |
294 | ctx->millis = NULL; \ | |
295 | ASN1_INTEGER_free(ctx->micros); \ | |
296 | ctx->micros = NULL; | |
297 | ||
298 | int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, | |
299 | int secs, int millis, int micros) | |
300 | { | |
301 | ||
302 | TS_RESP_CTX_accuracy_free(ctx); | |
303 | if (secs && (!(ctx->seconds = ASN1_INTEGER_new()) | |
304 | || !ASN1_INTEGER_set(ctx->seconds, secs))) | |
305 | goto err; | |
306 | if (millis && (!(ctx->millis = ASN1_INTEGER_new()) | |
307 | || !ASN1_INTEGER_set(ctx->millis, millis))) | |
308 | goto err; | |
309 | if (micros && (!(ctx->micros = ASN1_INTEGER_new()) | |
310 | || !ASN1_INTEGER_set(ctx->micros, micros))) | |
311 | goto err; | |
312 | ||
313 | return 1; | |
314 | err: | |
315 | TS_RESP_CTX_accuracy_free(ctx); | |
316 | TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags) | |
321 | { | |
322 | ctx->flags |= flags; | |
323 | } | |
324 | ||
325 | void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data) | |
326 | { | |
327 | ctx->serial_cb = cb; | |
328 | ctx->serial_cb_data = data; | |
329 | } | |
330 | ||
331 | void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data) | |
332 | { | |
333 | ctx->time_cb = cb; | |
334 | ctx->time_cb_data = data; | |
335 | } | |
336 | ||
337 | void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, | |
338 | TS_extension_cb cb, void *data) | |
339 | { | |
340 | ctx->extension_cb = cb; | |
341 | ctx->extension_cb_data = data; | |
342 | } | |
343 | ||
344 | int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, | |
345 | int status, const char *text) | |
346 | { | |
347 | TS_STATUS_INFO *si = NULL; | |
348 | ASN1_UTF8STRING *utf8_text = NULL; | |
349 | int ret = 0; | |
350 | ||
351 | if (!(si = TS_STATUS_INFO_new())) | |
352 | goto err; | |
353 | if (!ASN1_INTEGER_set(si->status, status)) | |
354 | goto err; | |
355 | if (text) { | |
356 | if (!(utf8_text = ASN1_UTF8STRING_new()) | |
357 | || !ASN1_STRING_set(utf8_text, text, strlen(text))) | |
358 | goto err; | |
359 | if (!si->text && !(si->text = sk_ASN1_UTF8STRING_new_null())) | |
360 | goto err; | |
361 | if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text)) | |
362 | goto err; | |
363 | utf8_text = NULL; /* Ownership is lost. */ | |
364 | } | |
365 | if (!TS_RESP_set_status_info(ctx->response, si)) | |
366 | goto err; | |
367 | ret = 1; | |
368 | err: | |
369 | if (!ret) | |
370 | TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE); | |
371 | TS_STATUS_INFO_free(si); | |
372 | ASN1_UTF8STRING_free(utf8_text); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, | |
377 | int status, const char *text) | |
378 | { | |
379 | int ret = 1; | |
380 | TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response); | |
381 | ||
382 | if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) { | |
383 | /* Status has not been set, set it now. */ | |
384 | ret = TS_RESP_CTX_set_status_info(ctx, status, text); | |
385 | } | |
386 | return ret; | |
387 | } | |
388 | ||
389 | int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure) | |
390 | { | |
391 | TS_STATUS_INFO *si = TS_RESP_get_status_info(ctx->response); | |
392 | if (!si->failure_info && !(si->failure_info = ASN1_BIT_STRING_new())) | |
393 | goto err; | |
394 | if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1)) | |
395 | goto err; | |
396 | return 1; | |
397 | err: | |
398 | TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE); | |
399 | return 0; | |
400 | } | |
401 | ||
402 | TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx) | |
403 | { | |
404 | return ctx->request; | |
405 | } | |
406 | ||
407 | TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx) | |
408 | { | |
409 | return ctx->tst_info; | |
410 | } | |
411 | ||
412 | int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, | |
413 | unsigned precision) | |
414 | { | |
415 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
416 | return 0; | |
417 | ctx->clock_precision_digits = precision; | |
418 | return 1; | |
419 | } | |
420 | ||
421 | /* Main entry method of the response generation. */ | |
422 | TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio) | |
423 | { | |
424 | ASN1_OBJECT *policy; | |
425 | TS_RESP *response; | |
426 | int result = 0; | |
427 | ||
428 | TS_RESP_CTX_init(ctx); | |
429 | ||
430 | /* Creating the response object. */ | |
431 | if (!(ctx->response = TS_RESP_new())) { | |
432 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE); | |
433 | goto end; | |
434 | } | |
435 | ||
436 | /* Parsing DER request. */ | |
437 | if (!(ctx->request = d2i_TS_REQ_bio(req_bio, NULL))) { | |
438 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
439 | "Bad request format or " "system error."); | |
440 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); | |
441 | goto end; | |
442 | } | |
443 | ||
444 | /* Setting default status info. */ | |
445 | if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL)) | |
446 | goto end; | |
447 | ||
448 | /* Checking the request format. */ | |
449 | if (!TS_RESP_check_request(ctx)) | |
450 | goto end; | |
451 | ||
452 | /* Checking acceptable policies. */ | |
453 | if (!(policy = TS_RESP_get_policy(ctx))) | |
454 | goto end; | |
455 | ||
456 | /* Creating the TS_TST_INFO object. */ | |
457 | if (!(ctx->tst_info = TS_RESP_create_tst_info(ctx, policy))) | |
458 | goto end; | |
459 | ||
460 | /* Processing extensions. */ | |
461 | if (!TS_RESP_process_extensions(ctx)) | |
462 | goto end; | |
463 | ||
464 | /* Generating the signature. */ | |
465 | if (!TS_RESP_sign(ctx)) | |
466 | goto end; | |
467 | ||
468 | /* Everything was successful. */ | |
469 | result = 1; | |
470 | end: | |
471 | if (!result) { | |
472 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR); | |
473 | if (ctx->response != NULL) { | |
474 | if (TS_RESP_CTX_set_status_info_cond(ctx, | |
475 | TS_STATUS_REJECTION, | |
476 | "Error during response " | |
477 | "generation.") == 0) { | |
478 | TS_RESP_free(ctx->response); | |
479 | ctx->response = NULL; | |
480 | } | |
481 | } | |
482 | } | |
483 | response = ctx->response; | |
484 | ctx->response = NULL; /* Ownership will be returned to caller. */ | |
485 | TS_RESP_CTX_cleanup(ctx); | |
486 | return response; | |
487 | } | |
488 | ||
489 | /* Initializes the variable part of the context. */ | |
490 | static void TS_RESP_CTX_init(TS_RESP_CTX *ctx) | |
491 | { | |
492 | ctx->request = NULL; | |
493 | ctx->response = NULL; | |
494 | ctx->tst_info = NULL; | |
495 | } | |
496 | ||
497 | /* Cleans up the variable part of the context. */ | |
498 | static void TS_RESP_CTX_cleanup(TS_RESP_CTX *ctx) | |
499 | { | |
500 | TS_REQ_free(ctx->request); | |
501 | ctx->request = NULL; | |
502 | TS_RESP_free(ctx->response); | |
503 | ctx->response = NULL; | |
504 | TS_TST_INFO_free(ctx->tst_info); | |
505 | ctx->tst_info = NULL; | |
506 | } | |
507 | ||
508 | /* Checks the format and content of the request. */ | |
509 | static int TS_RESP_check_request(TS_RESP_CTX *ctx) | |
510 | { | |
511 | TS_REQ *request = ctx->request; | |
512 | TS_MSG_IMPRINT *msg_imprint; | |
513 | X509_ALGOR *md_alg; | |
514 | int md_alg_id; | |
515 | const ASN1_OCTET_STRING *digest; | |
516 | EVP_MD *md = NULL; | |
517 | int i; | |
518 | ||
519 | /* Checking request version. */ | |
520 | if (TS_REQ_get_version(request) != 1) { | |
521 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
522 | "Bad request version."); | |
523 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST); | |
524 | return 0; | |
525 | } | |
526 | ||
527 | /* Checking message digest algorithm. */ | |
528 | msg_imprint = TS_REQ_get_msg_imprint(request); | |
529 | md_alg = TS_MSG_IMPRINT_get_algo(msg_imprint); | |
530 | md_alg_id = OBJ_obj2nid(md_alg->algorithm); | |
531 | for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) { | |
532 | EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i); | |
533 | if (md_alg_id == EVP_MD_type(current_md)) | |
534 | md = current_md; | |
535 | } | |
536 | if (!md) { | |
537 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
538 | "Message digest algorithm is " | |
539 | "not supported."); | |
540 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | /* No message digest takes parameter. */ | |
545 | if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) { | |
546 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
547 | "Superfluous message digest " | |
548 | "parameter."); | |
549 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
550 | return 0; | |
551 | } | |
552 | /* Checking message digest size. */ | |
553 | digest = TS_MSG_IMPRINT_get_msg(msg_imprint); | |
554 | if (digest->length != EVP_MD_size(md)) { | |
555 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
556 | "Bad message digest."); | |
557 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); | |
558 | return 0; | |
559 | } | |
560 | ||
561 | return 1; | |
562 | } | |
563 | ||
564 | /* Returns the TSA policy based on the requested and acceptable policies. */ | |
565 | static ASN1_OBJECT *TS_RESP_get_policy(TS_RESP_CTX *ctx) | |
566 | { | |
567 | ASN1_OBJECT *requested = TS_REQ_get_policy_id(ctx->request); | |
568 | ASN1_OBJECT *policy = NULL; | |
569 | int i; | |
570 | ||
571 | if (ctx->default_policy == NULL) { | |
572 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER); | |
573 | return NULL; | |
574 | } | |
575 | /* | |
576 | * Return the default policy if none is requested or the default is | |
577 | * requested. | |
578 | */ | |
579 | if (!requested || !OBJ_cmp(requested, ctx->default_policy)) | |
580 | policy = ctx->default_policy; | |
581 | ||
582 | /* Check if the policy is acceptable. */ | |
583 | for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) { | |
584 | ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i); | |
585 | if (!OBJ_cmp(requested, current)) | |
586 | policy = current; | |
587 | } | |
588 | if (!policy) { | |
589 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY); | |
590 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
591 | "Requested policy is not " "supported."); | |
592 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY); | |
593 | } | |
594 | return policy; | |
595 | } | |
596 | ||
597 | /* Creates the TS_TST_INFO object based on the settings of the context. */ | |
598 | static TS_TST_INFO *TS_RESP_create_tst_info(TS_RESP_CTX *ctx, | |
599 | ASN1_OBJECT *policy) | |
600 | { | |
601 | int result = 0; | |
602 | TS_TST_INFO *tst_info = NULL; | |
603 | ASN1_INTEGER *serial = NULL; | |
604 | ASN1_GENERALIZEDTIME *asn1_time = NULL; | |
605 | long sec, usec; | |
606 | TS_ACCURACY *accuracy = NULL; | |
607 | const ASN1_INTEGER *nonce; | |
608 | GENERAL_NAME *tsa_name = NULL; | |
609 | ||
610 | if (!(tst_info = TS_TST_INFO_new())) | |
611 | goto end; | |
612 | if (!TS_TST_INFO_set_version(tst_info, 1)) | |
613 | goto end; | |
614 | if (!TS_TST_INFO_set_policy_id(tst_info, policy)) | |
615 | goto end; | |
616 | if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint)) | |
617 | goto end; | |
618 | if (!(serial = (*ctx->serial_cb) (ctx, ctx->serial_cb_data)) | |
619 | || !TS_TST_INFO_set_serial(tst_info, serial)) | |
620 | goto end; | |
621 | if (!(*ctx->time_cb) (ctx, ctx->time_cb_data, &sec, &usec) | |
622 | || !(asn1_time = TS_RESP_set_genTime_with_precision(NULL, | |
623 | sec, usec, | |
624 | ctx->clock_precision_digits)) | |
625 | || !TS_TST_INFO_set_time(tst_info, asn1_time)) | |
626 | goto end; | |
627 | ||
628 | /* Setting accuracy if needed. */ | |
629 | if ((ctx->seconds || ctx->millis || ctx->micros) | |
630 | && !(accuracy = TS_ACCURACY_new())) | |
631 | goto end; | |
632 | ||
633 | if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds)) | |
634 | goto end; | |
635 | if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis)) | |
636 | goto end; | |
637 | if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros)) | |
638 | goto end; | |
639 | if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy)) | |
640 | goto end; | |
641 | ||
642 | /* Setting ordering. */ | |
643 | if ((ctx->flags & TS_ORDERING) | |
644 | && !TS_TST_INFO_set_ordering(tst_info, 1)) | |
645 | goto end; | |
646 | ||
647 | /* Setting nonce if needed. */ | |
648 | if ((nonce = TS_REQ_get_nonce(ctx->request)) != NULL | |
649 | && !TS_TST_INFO_set_nonce(tst_info, nonce)) | |
650 | goto end; | |
651 | ||
652 | /* Setting TSA name to subject of signer certificate. */ | |
653 | if (ctx->flags & TS_TSA_NAME) { | |
654 | if (!(tsa_name = GENERAL_NAME_new())) | |
655 | goto end; | |
656 | tsa_name->type = GEN_DIRNAME; | |
657 | tsa_name->d.dirn = | |
658 | X509_NAME_dup(ctx->signer_cert->cert_info->subject); | |
659 | if (!tsa_name->d.dirn) | |
660 | goto end; | |
661 | if (!TS_TST_INFO_set_tsa(tst_info, tsa_name)) | |
662 | goto end; | |
663 | } | |
664 | ||
665 | result = 1; | |
666 | end: | |
667 | if (!result) { | |
668 | TS_TST_INFO_free(tst_info); | |
669 | tst_info = NULL; | |
670 | TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR); | |
671 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
672 | "Error during TSTInfo " | |
673 | "generation."); | |
674 | } | |
675 | GENERAL_NAME_free(tsa_name); | |
676 | TS_ACCURACY_free(accuracy); | |
677 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
678 | ASN1_INTEGER_free(serial); | |
679 | ||
680 | return tst_info; | |
681 | } | |
682 | ||
683 | /* Processing the extensions of the request. */ | |
684 | static int TS_RESP_process_extensions(TS_RESP_CTX *ctx) | |
685 | { | |
686 | STACK_OF(X509_EXTENSION) *exts = TS_REQ_get_exts(ctx->request); | |
687 | int i; | |
688 | int ok = 1; | |
689 | ||
690 | for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) { | |
691 | X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); | |
692 | /* | |
693 | * XXXXX The last argument was previously (void *)ctx->extension_cb, | |
694 | * but ISO C doesn't permit converting a function pointer to void *. | |
695 | * For lack of better information, I'm placing a NULL there instead. | |
696 | * The callback can pick its own address out from the ctx anyway... | |
697 | */ | |
698 | ok = (*ctx->extension_cb) (ctx, ext, NULL); | |
699 | } | |
700 | ||
701 | return ok; | |
702 | } | |
703 | ||
704 | /* Functions for signing the TS_TST_INFO structure of the context. */ | |
705 | static int TS_RESP_sign(TS_RESP_CTX *ctx) | |
706 | { | |
707 | int ret = 0; | |
708 | PKCS7 *p7 = NULL; | |
709 | PKCS7_SIGNER_INFO *si; | |
710 | STACK_OF(X509) *certs; /* Certificates to include in sc. */ | |
711 | ESS_SIGNING_CERT *sc = NULL; | |
712 | ASN1_OBJECT *oid; | |
713 | BIO *p7bio = NULL; | |
714 | int i; | |
715 | ||
716 | /* Check if signcert and pkey match. */ | |
717 | if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) { | |
718 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
719 | goto err; | |
720 | } | |
721 | ||
722 | /* Create a new PKCS7 signed object. */ | |
723 | if (!(p7 = PKCS7_new())) { | |
724 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); | |
725 | goto err; | |
726 | } | |
727 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) | |
728 | goto err; | |
729 | ||
730 | /* Force SignedData version to be 3 instead of the default 1. */ | |
731 | if (!ASN1_INTEGER_set(p7->d.sign->version, 3)) | |
732 | goto err; | |
733 | ||
734 | /* Add signer certificate and optional certificate chain. */ | |
735 | if (TS_REQ_get_cert_req(ctx->request)) { | |
736 | PKCS7_add_certificate(p7, ctx->signer_cert); | |
737 | if (ctx->certs) { | |
738 | for (i = 0; i < sk_X509_num(ctx->certs); ++i) { | |
739 | X509 *cert = sk_X509_value(ctx->certs, i); | |
740 | PKCS7_add_certificate(p7, cert); | |
741 | } | |
742 | } | |
743 | } | |
744 | ||
745 | /* Add a new signer info. */ | |
746 | if (!(si = PKCS7_add_signature(p7, ctx->signer_cert, | |
747 | ctx->signer_key, EVP_sha1()))) { | |
748 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR); | |
749 | goto err; | |
750 | } | |
751 | ||
752 | /* Add content type signed attribute to the signer info. */ | |
753 | oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); | |
754 | if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, | |
755 | V_ASN1_OBJECT, oid)) { | |
756 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR); | |
757 | goto err; | |
758 | } | |
759 | ||
760 | /* | |
761 | * Create the ESS SigningCertificate attribute which contains the signer | |
762 | * certificate id and optionally the certificate chain. | |
763 | */ | |
764 | certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL; | |
765 | if (!(sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs))) | |
766 | goto err; | |
767 | ||
768 | /* Add SigningCertificate signed attribute to the signer info. */ | |
769 | if (!ESS_add_signing_cert(si, sc)) { | |
770 | TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR); | |
771 | goto err; | |
772 | } | |
773 | ||
774 | /* Add a new empty NID_id_smime_ct_TSTInfo encapsulated content. */ | |
775 | if (!TS_TST_INFO_content_new(p7)) | |
776 | goto err; | |
777 | ||
778 | /* Add the DER encoded tst_info to the PKCS7 structure. */ | |
779 | if (!(p7bio = PKCS7_dataInit(p7, NULL))) { | |
780 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); | |
781 | goto err; | |
782 | } | |
783 | ||
784 | /* Convert tst_info to DER. */ | |
785 | if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) { | |
786 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
787 | goto err; | |
788 | } | |
789 | ||
790 | /* Create the signature and add it to the signer info. */ | |
791 | if (!PKCS7_dataFinal(p7, p7bio)) { | |
792 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
793 | goto err; | |
794 | } | |
795 | ||
796 | /* Set new PKCS7 and TST_INFO objects. */ | |
797 | TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info); | |
798 | p7 = NULL; /* Ownership is lost. */ | |
799 | ctx->tst_info = NULL; /* Ownership is lost. */ | |
800 | ||
801 | ret = 1; | |
802 | err: | |
803 | if (!ret) | |
804 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
805 | "Error during signature " | |
806 | "generation."); | |
807 | BIO_free_all(p7bio); | |
808 | ESS_SIGNING_CERT_free(sc); | |
809 | PKCS7_free(p7); | |
810 | return ret; | |
811 | } | |
812 | ||
813 | static ESS_SIGNING_CERT *ESS_SIGNING_CERT_new_init(X509 *signcert, | |
814 | STACK_OF(X509) *certs) | |
815 | { | |
816 | ESS_CERT_ID *cid; | |
817 | ESS_SIGNING_CERT *sc = NULL; | |
818 | int i; | |
819 | ||
820 | /* Creating the ESS_CERT_ID stack. */ | |
821 | if (!(sc = ESS_SIGNING_CERT_new())) | |
822 | goto err; | |
823 | if (!sc->cert_ids && !(sc->cert_ids = sk_ESS_CERT_ID_new_null())) | |
824 | goto err; | |
825 | ||
826 | /* Adding the signing certificate id. */ | |
827 | if (!(cid = ESS_CERT_ID_new_init(signcert, 0)) | |
828 | || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) | |
829 | goto err; | |
830 | /* Adding the certificate chain ids. */ | |
831 | for (i = 0; i < sk_X509_num(certs); ++i) { | |
832 | X509 *cert = sk_X509_value(certs, i); | |
833 | if (!(cid = ESS_CERT_ID_new_init(cert, 1)) | |
834 | || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) | |
835 | goto err; | |
836 | } | |
837 | ||
838 | return sc; | |
839 | err: | |
840 | ESS_SIGNING_CERT_free(sc); | |
841 | TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE); | |
842 | return NULL; | |
843 | } | |
844 | ||
845 | static ESS_CERT_ID *ESS_CERT_ID_new_init(X509 *cert, int issuer_needed) | |
846 | { | |
847 | ESS_CERT_ID *cid = NULL; | |
848 | GENERAL_NAME *name = NULL; | |
849 | ||
850 | /* Recompute SHA1 hash of certificate if necessary (side effect). */ | |
851 | X509_check_purpose(cert, -1, 0); | |
852 | ||
853 | if (!(cid = ESS_CERT_ID_new())) | |
854 | goto err; | |
855 | if (!ASN1_OCTET_STRING_set(cid->hash, cert->sha1_hash, | |
856 | sizeof(cert->sha1_hash))) | |
857 | goto err; | |
858 | ||
859 | /* Setting the issuer/serial if requested. */ | |
860 | if (issuer_needed) { | |
861 | /* Creating issuer/serial structure. */ | |
862 | if (!cid->issuer_serial | |
863 | && !(cid->issuer_serial = ESS_ISSUER_SERIAL_new())) | |
864 | goto err; | |
865 | /* Creating general name from the certificate issuer. */ | |
866 | if (!(name = GENERAL_NAME_new())) | |
867 | goto err; | |
868 | name->type = GEN_DIRNAME; | |
869 | if (!(name->d.dirn = X509_NAME_dup(cert->cert_info->issuer))) | |
870 | goto err; | |
871 | if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name)) | |
872 | goto err; | |
873 | name = NULL; /* Ownership is lost. */ | |
874 | /* Setting the serial number. */ | |
875 | ASN1_INTEGER_free(cid->issuer_serial->serial); | |
876 | if (!(cid->issuer_serial->serial = | |
877 | ASN1_INTEGER_dup(cert->cert_info->serialNumber))) | |
878 | goto err; | |
879 | } | |
880 | ||
881 | return cid; | |
882 | err: | |
883 | GENERAL_NAME_free(name); | |
884 | ESS_CERT_ID_free(cid); | |
885 | TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE); | |
886 | return NULL; | |
887 | } | |
888 | ||
889 | static int TS_TST_INFO_content_new(PKCS7 *p7) | |
890 | { | |
891 | PKCS7 *ret = NULL; | |
892 | ASN1_OCTET_STRING *octet_string = NULL; | |
893 | ||
894 | /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */ | |
895 | if (!(ret = PKCS7_new())) | |
896 | goto err; | |
897 | if (!(ret->d.other = ASN1_TYPE_new())) | |
898 | goto err; | |
899 | ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); | |
900 | if (!(octet_string = ASN1_OCTET_STRING_new())) | |
901 | goto err; | |
902 | ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string); | |
903 | octet_string = NULL; | |
904 | ||
905 | /* Add encapsulated content to signed PKCS7 structure. */ | |
906 | if (!PKCS7_set_content(p7, ret)) | |
907 | goto err; | |
908 | ||
909 | return 1; | |
910 | err: | |
911 | ASN1_OCTET_STRING_free(octet_string); | |
912 | PKCS7_free(ret); | |
913 | return 0; | |
914 | } | |
915 | ||
916 | static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc) | |
917 | { | |
918 | ASN1_STRING *seq = NULL; | |
919 | unsigned char *p, *pp = NULL; | |
920 | int len; | |
921 | ||
922 | len = i2d_ESS_SIGNING_CERT(sc, NULL); | |
923 | if (!(pp = (unsigned char *)OPENSSL_malloc(len))) { | |
924 | TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); | |
925 | goto err; | |
926 | } | |
927 | p = pp; | |
928 | i2d_ESS_SIGNING_CERT(sc, &p); | |
929 | if (!(seq = ASN1_STRING_new()) || !ASN1_STRING_set(seq, pp, len)) { | |
930 | TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); | |
931 | goto err; | |
932 | } | |
933 | OPENSSL_free(pp); | |
934 | pp = NULL; | |
935 | return PKCS7_add_signed_attribute(si, | |
936 | NID_id_smime_aa_signingCertificate, | |
937 | V_ASN1_SEQUENCE, seq); | |
938 | err: | |
939 | ASN1_STRING_free(seq); | |
940 | OPENSSL_free(pp); | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | static ASN1_GENERALIZEDTIME | |
946 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time, | |
947 | long sec, long usec, unsigned precision) | |
948 | { | |
949 | time_t time_sec = (time_t)sec; | |
950 | struct tm *tm = NULL; | |
951 | char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS]; | |
952 | char *p = genTime_str; | |
953 | char *p_end = genTime_str + sizeof(genTime_str); | |
954 | ||
955 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
956 | goto err; | |
957 | ||
958 | if (!(tm = gmtime(&time_sec))) | |
959 | goto err; | |
960 | ||
961 | /* | |
962 | * Put "genTime_str" in GeneralizedTime format. We work around the | |
963 | * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST | |
964 | * NOT include fractional seconds") and OpenSSL related functions to | |
965 | * meet the rfc3161 requirement: "GeneralizedTime syntax can include | |
966 | * fraction-of-second details". | |
967 | */ | |
968 | p += BIO_snprintf(p, p_end - p, | |
969 | "%04d%02d%02d%02d%02d%02d", | |
970 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, | |
971 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
972 | if (precision > 0) { | |
973 | /* Add fraction of seconds (leave space for dot and null). */ | |
974 | BIO_snprintf(p, 2 + precision, ".%06ld", usec); | |
975 | /* | |
976 | * We cannot use the snprintf return value, because it might have | |
977 | * been truncated. | |
978 | */ | |
979 | p += strlen(p); | |
980 | ||
981 | /* | |
982 | * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the | |
983 | * following restrictions for a DER-encoding, which OpenSSL | |
984 | * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't | |
985 | * support: "The encoding MUST terminate with a "Z" (which means | |
986 | * "Zulu" time). The decimal point element, if present, MUST be the | |
987 | * point option ".". The fractional-seconds elements, if present, | |
988 | * MUST omit all trailing 0's; if the elements correspond to 0, they | |
989 | * MUST be wholly omitted, and the decimal point element also MUST be | |
990 | * omitted." | |
991 | */ | |
992 | /* | |
993 | * Remove trailing zeros. The dot guarantees the exit condition of | |
994 | * this loop even if all the digits are zero. | |
995 | */ | |
996 | while (*--p == '0') | |
997 | /* | |
998 | * empty | |
999 | */ ; | |
1000 | /* p points to either the dot or the last non-zero digit. */ | |
1001 | if (*p != '.') | |
1002 | ++p; | |
1003 | } | |
1004 | /* Add the trailing Z and the terminating null. */ | |
1005 | *p++ = 'Z'; | |
1006 | *p++ = '\0'; | |
1007 | ||
1008 | /* Now call OpenSSL to check and set our genTime value */ | |
1009 | if (!asn1_time && !(asn1_time = M_ASN1_GENERALIZEDTIME_new())) | |
1010 | goto err; | |
1011 | if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) { | |
1012 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
1013 | goto err; | |
1014 | } | |
1015 | ||
1016 | return asn1_time; | |
1017 | err: | |
1018 | TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME); | |
1019 | return NULL; | |
1020 | } |