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Commit | Line | Data |
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c7235be6 | 1 | /* crypto/ts/ts_resp_sign.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project | |
4 | * 2002. | |
c7235be6 UM |
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 | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
c7235be6 UM |
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 | ||
b39fc560 | 60 | #include "internal/cryptlib.h" |
c7235be6 UM |
61 | |
62 | #if defined(OPENSSL_SYS_UNIX) | |
0f113f3e | 63 | # include <sys/time.h> |
c7235be6 UM |
64 | #endif |
65 | ||
66 | #include <openssl/objects.h> | |
67 | #include <openssl/ts.h> | |
68 | #include <openssl/pkcs7.h> | |
ca4a494c | 69 | #include "ts_lcl.h" |
c7235be6 | 70 | |
c7235be6 UM |
71 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *); |
72 | static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec); | |
73 | static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *); | |
74 | ||
9c422b5b RS |
75 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx); |
76 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx); | |
77 | static int ts_RESP_check_request(TS_RESP_CTX *ctx); | |
78 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx); | |
79 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, | |
0f113f3e | 80 | ASN1_OBJECT *policy); |
9c422b5b RS |
81 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx); |
82 | static int ts_RESP_sign(TS_RESP_CTX *ctx); | |
c7235be6 | 83 | |
9c422b5b | 84 | static ESS_SIGNING_CERT *ess_SIGNING_CERT_new_init(X509 *signcert, |
0f113f3e | 85 | STACK_OF(X509) *certs); |
9c422b5b RS |
86 | static ESS_CERT_ID *ess_CERT_ID_new_init(X509 *cert, int issuer_needed); |
87 | static int ts_TST_INFO_content_new(PKCS7 *p7); | |
c7235be6 UM |
88 | static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc); |
89 | ||
0f113f3e MC |
90 | static ASN1_GENERALIZEDTIME |
91 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long, | |
92 | unsigned); | |
c7235be6 | 93 | |
18cd23df | 94 | /* Default callback for response generation. */ |
c7235be6 | 95 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data) |
0f113f3e MC |
96 | { |
97 | ASN1_INTEGER *serial = ASN1_INTEGER_new(); | |
18cd23df | 98 | |
90945fa3 | 99 | if (serial == NULL) |
0f113f3e MC |
100 | goto err; |
101 | if (!ASN1_INTEGER_set(serial, 1)) | |
102 | goto err; | |
103 | return serial; | |
18cd23df | 104 | |
c7235be6 | 105 | err: |
0f113f3e MC |
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 | } | |
c7235be6 UM |
111 | |
112 | #if defined(OPENSSL_SYS_UNIX) | |
113 | ||
0f113f3e MC |
114 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
115 | long *sec, long *usec) | |
116 | { | |
117 | struct timeval tv; | |
118 | if (gettimeofday(&tv, NULL) != 0) { | |
119 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
120 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
121 | "Time is not available."); | |
122 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
123 | return 0; | |
124 | } | |
0f113f3e MC |
125 | *sec = tv.tv_sec; |
126 | *usec = tv.tv_usec; | |
127 | ||
128 | return 1; | |
129 | } | |
c7235be6 UM |
130 | |
131 | #else | |
132 | ||
0f113f3e MC |
133 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
134 | long *sec, long *usec) | |
135 | { | |
136 | time_t t; | |
137 | if (time(&t) == (time_t)-1) { | |
138 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
139 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
140 | "Time is not available."); | |
141 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
142 | return 0; | |
143 | } | |
0f113f3e MC |
144 | *sec = (long)t; |
145 | *usec = 0; | |
146 | ||
147 | return 1; | |
148 | } | |
c7235be6 UM |
149 | |
150 | #endif | |
151 | ||
152 | static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, | |
0f113f3e MC |
153 | void *data) |
154 | { | |
0f113f3e MC |
155 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
156 | "Unsupported extension."); | |
157 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION); | |
158 | return 0; | |
159 | } | |
c7235be6 UM |
160 | |
161 | /* TS_RESP_CTX management functions. */ | |
162 | ||
163 | TS_RESP_CTX *TS_RESP_CTX_new() | |
0f113f3e MC |
164 | { |
165 | TS_RESP_CTX *ctx; | |
c7235be6 | 166 | |
b51bce94 | 167 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) { |
0f113f3e MC |
168 | TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE); |
169 | return NULL; | |
170 | } | |
c7235be6 | 171 | |
0f113f3e MC |
172 | ctx->serial_cb = def_serial_cb; |
173 | ctx->time_cb = def_time_cb; | |
174 | ctx->extension_cb = def_extension_cb; | |
c7235be6 | 175 | |
0f113f3e MC |
176 | return ctx; |
177 | } | |
c7235be6 UM |
178 | |
179 | void TS_RESP_CTX_free(TS_RESP_CTX *ctx) | |
0f113f3e MC |
180 | { |
181 | if (!ctx) | |
182 | return; | |
183 | ||
184 | X509_free(ctx->signer_cert); | |
185 | EVP_PKEY_free(ctx->signer_key); | |
186 | sk_X509_pop_free(ctx->certs, X509_free); | |
187 | sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free); | |
188 | ASN1_OBJECT_free(ctx->default_policy); | |
189 | sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */ | |
190 | ASN1_INTEGER_free(ctx->seconds); | |
191 | ASN1_INTEGER_free(ctx->millis); | |
192 | ASN1_INTEGER_free(ctx->micros); | |
193 | OPENSSL_free(ctx); | |
194 | } | |
c7235be6 UM |
195 | |
196 | int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer) | |
0f113f3e MC |
197 | { |
198 | if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) { | |
199 | TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT, | |
200 | TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE); | |
201 | return 0; | |
202 | } | |
222561fe | 203 | X509_free(ctx->signer_cert); |
0f113f3e | 204 | ctx->signer_cert = signer; |
05f0fb9f | 205 | X509_up_ref(ctx->signer_cert); |
0f113f3e MC |
206 | return 1; |
207 | } | |
c7235be6 UM |
208 | |
209 | int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key) | |
0f113f3e | 210 | { |
c5ba2d99 | 211 | EVP_PKEY_free(ctx->signer_key); |
0f113f3e MC |
212 | ctx->signer_key = key; |
213 | CRYPTO_add(&ctx->signer_key->references, +1, CRYPTO_LOCK_EVP_PKEY); | |
c7235be6 | 214 | |
0f113f3e MC |
215 | return 1; |
216 | } | |
c7235be6 UM |
217 | |
218 | int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *def_policy) | |
0f113f3e | 219 | { |
2ace7450 | 220 | ASN1_OBJECT_free(ctx->default_policy); |
75ebbd9a | 221 | if ((ctx->default_policy = OBJ_dup(def_policy)) == NULL) |
0f113f3e MC |
222 | goto err; |
223 | return 1; | |
c7235be6 | 224 | err: |
0f113f3e MC |
225 | TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE); |
226 | return 0; | |
227 | } | |
c7235be6 UM |
228 | |
229 | int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs) | |
0f113f3e MC |
230 | { |
231 | ||
222561fe RS |
232 | sk_X509_pop_free(ctx->certs, X509_free); |
233 | ctx->certs = NULL; | |
0f113f3e MC |
234 | if (!certs) |
235 | return 1; | |
75ebbd9a | 236 | if ((ctx->certs = X509_chain_up_ref(certs)) == NULL) { |
0f113f3e MC |
237 | TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE); |
238 | return 0; | |
239 | } | |
240 | ||
241 | return 1; | |
242 | } | |
c7235be6 UM |
243 | |
244 | int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, ASN1_OBJECT *policy) | |
0f113f3e MC |
245 | { |
246 | ASN1_OBJECT *copy = NULL; | |
247 | ||
75ebbd9a RS |
248 | if (ctx->policies == NULL |
249 | && (ctx->policies = sk_ASN1_OBJECT_new_null()) == NULL) | |
0f113f3e | 250 | goto err; |
75ebbd9a | 251 | if ((copy = OBJ_dup(policy)) == NULL) |
0f113f3e MC |
252 | goto err; |
253 | if (!sk_ASN1_OBJECT_push(ctx->policies, copy)) | |
254 | goto err; | |
255 | ||
256 | return 1; | |
c7235be6 | 257 | err: |
0f113f3e MC |
258 | TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE); |
259 | ASN1_OBJECT_free(copy); | |
260 | return 0; | |
261 | } | |
c7235be6 UM |
262 | |
263 | int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md) | |
0f113f3e | 264 | { |
75ebbd9a RS |
265 | if (ctx->mds == NULL |
266 | && (ctx->mds = sk_EVP_MD_new_null()) == NULL) | |
0f113f3e | 267 | goto err; |
0f113f3e MC |
268 | if (!sk_EVP_MD_push(ctx->mds, (EVP_MD *)md)) |
269 | goto err; | |
270 | ||
271 | return 1; | |
c7235be6 | 272 | err: |
0f113f3e MC |
273 | TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE); |
274 | return 0; | |
275 | } | |
276 | ||
277 | #define TS_RESP_CTX_accuracy_free(ctx) \ | |
278 | ASN1_INTEGER_free(ctx->seconds); \ | |
279 | ctx->seconds = NULL; \ | |
280 | ASN1_INTEGER_free(ctx->millis); \ | |
281 | ctx->millis = NULL; \ | |
282 | ASN1_INTEGER_free(ctx->micros); \ | |
283 | ctx->micros = NULL; | |
284 | ||
285 | int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, | |
286 | int secs, int millis, int micros) | |
287 | { | |
288 | ||
289 | TS_RESP_CTX_accuracy_free(ctx); | |
75ebbd9a RS |
290 | if (secs |
291 | && ((ctx->seconds = ASN1_INTEGER_new()) == NULL | |
292 | || !ASN1_INTEGER_set(ctx->seconds, secs))) | |
0f113f3e | 293 | goto err; |
75ebbd9a RS |
294 | if (millis |
295 | && ((ctx->millis = ASN1_INTEGER_new()) == NULL | |
296 | || !ASN1_INTEGER_set(ctx->millis, millis))) | |
0f113f3e | 297 | goto err; |
75ebbd9a RS |
298 | if (micros |
299 | && ((ctx->micros = ASN1_INTEGER_new()) == NULL | |
300 | || !ASN1_INTEGER_set(ctx->micros, micros))) | |
0f113f3e MC |
301 | goto err; |
302 | ||
303 | return 1; | |
c7235be6 | 304 | err: |
0f113f3e MC |
305 | TS_RESP_CTX_accuracy_free(ctx); |
306 | TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE); | |
307 | return 0; | |
308 | } | |
c7235be6 UM |
309 | |
310 | void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags) | |
0f113f3e MC |
311 | { |
312 | ctx->flags |= flags; | |
313 | } | |
c7235be6 UM |
314 | |
315 | void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data) | |
0f113f3e MC |
316 | { |
317 | ctx->serial_cb = cb; | |
318 | ctx->serial_cb_data = data; | |
319 | } | |
c7235be6 UM |
320 | |
321 | void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data) | |
0f113f3e MC |
322 | { |
323 | ctx->time_cb = cb; | |
324 | ctx->time_cb_data = data; | |
325 | } | |
326 | ||
327 | void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, | |
328 | TS_extension_cb cb, void *data) | |
329 | { | |
330 | ctx->extension_cb = cb; | |
331 | ctx->extension_cb_data = data; | |
332 | } | |
333 | ||
334 | int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, | |
335 | int status, const char *text) | |
336 | { | |
337 | TS_STATUS_INFO *si = NULL; | |
338 | ASN1_UTF8STRING *utf8_text = NULL; | |
339 | int ret = 0; | |
340 | ||
75ebbd9a | 341 | if ((si = TS_STATUS_INFO_new()) == NULL) |
0f113f3e MC |
342 | goto err; |
343 | if (!ASN1_INTEGER_set(si->status, status)) | |
344 | goto err; | |
345 | if (text) { | |
75ebbd9a | 346 | if ((utf8_text = ASN1_UTF8STRING_new()) == NULL |
0f113f3e MC |
347 | || !ASN1_STRING_set(utf8_text, text, strlen(text))) |
348 | goto err; | |
75ebbd9a RS |
349 | if (si->text == NULL |
350 | && (si->text = sk_ASN1_UTF8STRING_new_null()) == NULL) | |
0f113f3e MC |
351 | goto err; |
352 | if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text)) | |
353 | goto err; | |
354 | utf8_text = NULL; /* Ownership is lost. */ | |
355 | } | |
356 | if (!TS_RESP_set_status_info(ctx->response, si)) | |
357 | goto err; | |
358 | ret = 1; | |
c7235be6 | 359 | err: |
0f113f3e MC |
360 | if (!ret) |
361 | TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE); | |
362 | TS_STATUS_INFO_free(si); | |
363 | ASN1_UTF8STRING_free(utf8_text); | |
364 | return ret; | |
365 | } | |
366 | ||
367 | int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, | |
368 | int status, const char *text) | |
369 | { | |
370 | int ret = 1; | |
ca4a494c | 371 | TS_STATUS_INFO *si = ctx->response->status_info; |
0f113f3e MC |
372 | |
373 | if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) { | |
0f113f3e MC |
374 | ret = TS_RESP_CTX_set_status_info(ctx, status, text); |
375 | } | |
376 | return ret; | |
377 | } | |
c7235be6 UM |
378 | |
379 | int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure) | |
0f113f3e | 380 | { |
ca4a494c | 381 | TS_STATUS_INFO *si = ctx->response->status_info; |
75ebbd9a RS |
382 | if (si->failure_info == NULL |
383 | && (si->failure_info = ASN1_BIT_STRING_new()) == NULL) | |
0f113f3e MC |
384 | goto err; |
385 | if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1)) | |
386 | goto err; | |
387 | return 1; | |
c7235be6 | 388 | err: |
0f113f3e MC |
389 | TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE); |
390 | return 0; | |
391 | } | |
c7235be6 UM |
392 | |
393 | TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx) | |
0f113f3e MC |
394 | { |
395 | return ctx->request; | |
396 | } | |
c7235be6 UM |
397 | |
398 | TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx) | |
0f113f3e MC |
399 | { |
400 | return ctx->tst_info; | |
401 | } | |
402 | ||
403 | int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, | |
404 | unsigned precision) | |
405 | { | |
406 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
407 | return 0; | |
408 | ctx->clock_precision_digits = precision; | |
409 | return 1; | |
410 | } | |
c7235be6 UM |
411 | |
412 | /* Main entry method of the response generation. */ | |
413 | TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio) | |
0f113f3e MC |
414 | { |
415 | ASN1_OBJECT *policy; | |
416 | TS_RESP *response; | |
417 | int result = 0; | |
418 | ||
9c422b5b | 419 | ts_RESP_CTX_init(ctx); |
0f113f3e | 420 | |
75ebbd9a | 421 | if ((ctx->response = TS_RESP_new()) == NULL) { |
0f113f3e MC |
422 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE); |
423 | goto end; | |
424 | } | |
75ebbd9a | 425 | if ((ctx->request = d2i_TS_REQ_bio(req_bio, NULL)) == NULL) { |
0f113f3e | 426 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
18cd23df | 427 | "Bad request format or system error."); |
0f113f3e MC |
428 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); |
429 | goto end; | |
430 | } | |
0f113f3e MC |
431 | if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL)) |
432 | goto end; | |
9c422b5b | 433 | if (!ts_RESP_check_request(ctx)) |
0f113f3e | 434 | goto end; |
9c422b5b | 435 | if ((policy = ts_RESP_get_policy(ctx)) == NULL) |
0f113f3e | 436 | goto end; |
9c422b5b | 437 | if ((ctx->tst_info = ts_RESP_create_tst_info(ctx, policy)) == NULL) |
0f113f3e | 438 | goto end; |
9c422b5b | 439 | if (!ts_RESP_process_extensions(ctx)) |
0f113f3e | 440 | goto end; |
9c422b5b | 441 | if (!ts_RESP_sign(ctx)) |
0f113f3e | 442 | goto end; |
0f113f3e | 443 | result = 1; |
18cd23df | 444 | |
c7235be6 | 445 | end: |
0f113f3e MC |
446 | if (!result) { |
447 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR); | |
448 | if (ctx->response != NULL) { | |
449 | if (TS_RESP_CTX_set_status_info_cond(ctx, | |
450 | TS_STATUS_REJECTION, | |
451 | "Error during response " | |
452 | "generation.") == 0) { | |
453 | TS_RESP_free(ctx->response); | |
454 | ctx->response = NULL; | |
455 | } | |
456 | } | |
457 | } | |
458 | response = ctx->response; | |
459 | ctx->response = NULL; /* Ownership will be returned to caller. */ | |
9c422b5b | 460 | ts_RESP_CTX_cleanup(ctx); |
0f113f3e MC |
461 | return response; |
462 | } | |
c7235be6 UM |
463 | |
464 | /* Initializes the variable part of the context. */ | |
9c422b5b | 465 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx) |
0f113f3e MC |
466 | { |
467 | ctx->request = NULL; | |
468 | ctx->response = NULL; | |
469 | ctx->tst_info = NULL; | |
470 | } | |
c7235be6 UM |
471 | |
472 | /* Cleans up the variable part of the context. */ | |
9c422b5b | 473 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx) |
0f113f3e MC |
474 | { |
475 | TS_REQ_free(ctx->request); | |
476 | ctx->request = NULL; | |
477 | TS_RESP_free(ctx->response); | |
478 | ctx->response = NULL; | |
479 | TS_TST_INFO_free(ctx->tst_info); | |
480 | ctx->tst_info = NULL; | |
481 | } | |
c7235be6 UM |
482 | |
483 | /* Checks the format and content of the request. */ | |
9c422b5b | 484 | static int ts_RESP_check_request(TS_RESP_CTX *ctx) |
0f113f3e MC |
485 | { |
486 | TS_REQ *request = ctx->request; | |
487 | TS_MSG_IMPRINT *msg_imprint; | |
488 | X509_ALGOR *md_alg; | |
489 | int md_alg_id; | |
490 | const ASN1_OCTET_STRING *digest; | |
491 | EVP_MD *md = NULL; | |
492 | int i; | |
493 | ||
0f113f3e MC |
494 | if (TS_REQ_get_version(request) != 1) { |
495 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
496 | "Bad request version."); | |
497 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST); | |
498 | return 0; | |
499 | } | |
500 | ||
ca4a494c RS |
501 | msg_imprint = request->msg_imprint; |
502 | md_alg = msg_imprint->hash_algo; | |
0f113f3e MC |
503 | md_alg_id = OBJ_obj2nid(md_alg->algorithm); |
504 | for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) { | |
505 | EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i); | |
506 | if (md_alg_id == EVP_MD_type(current_md)) | |
507 | md = current_md; | |
508 | } | |
509 | if (!md) { | |
510 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
511 | "Message digest algorithm is " | |
512 | "not supported."); | |
513 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
514 | return 0; | |
515 | } | |
516 | ||
0f113f3e MC |
517 | if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) { |
518 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
519 | "Superfluous message digest " | |
520 | "parameter."); | |
521 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
522 | return 0; | |
523 | } | |
ca4a494c | 524 | digest = msg_imprint->hashed_msg; |
0f113f3e MC |
525 | if (digest->length != EVP_MD_size(md)) { |
526 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
527 | "Bad message digest."); | |
528 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); | |
529 | return 0; | |
530 | } | |
531 | ||
532 | return 1; | |
533 | } | |
c7235be6 | 534 | |
b4e88ccb | 535 | /* Returns the TSA policy based on the requested and acceptable policies. */ |
9c422b5b | 536 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx) |
0f113f3e | 537 | { |
ca4a494c | 538 | ASN1_OBJECT *requested = ctx->request->policy_id; |
0f113f3e MC |
539 | ASN1_OBJECT *policy = NULL; |
540 | int i; | |
541 | ||
542 | if (ctx->default_policy == NULL) { | |
543 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER); | |
544 | return NULL; | |
545 | } | |
0f113f3e MC |
546 | if (!requested || !OBJ_cmp(requested, ctx->default_policy)) |
547 | policy = ctx->default_policy; | |
548 | ||
549 | /* Check if the policy is acceptable. */ | |
550 | for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) { | |
551 | ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i); | |
552 | if (!OBJ_cmp(requested, current)) | |
553 | policy = current; | |
554 | } | |
555 | if (!policy) { | |
556 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY); | |
557 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
558 | "Requested policy is not " "supported."); | |
559 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY); | |
560 | } | |
561 | return policy; | |
562 | } | |
c7235be6 UM |
563 | |
564 | /* Creates the TS_TST_INFO object based on the settings of the context. */ | |
9c422b5b | 565 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, |
0f113f3e MC |
566 | ASN1_OBJECT *policy) |
567 | { | |
568 | int result = 0; | |
569 | TS_TST_INFO *tst_info = NULL; | |
570 | ASN1_INTEGER *serial = NULL; | |
571 | ASN1_GENERALIZEDTIME *asn1_time = NULL; | |
572 | long sec, usec; | |
573 | TS_ACCURACY *accuracy = NULL; | |
574 | const ASN1_INTEGER *nonce; | |
575 | GENERAL_NAME *tsa_name = NULL; | |
576 | ||
75ebbd9a | 577 | if ((tst_info = TS_TST_INFO_new()) == NULL) |
0f113f3e MC |
578 | goto end; |
579 | if (!TS_TST_INFO_set_version(tst_info, 1)) | |
580 | goto end; | |
581 | if (!TS_TST_INFO_set_policy_id(tst_info, policy)) | |
582 | goto end; | |
583 | if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint)) | |
584 | goto end; | |
75ebbd9a | 585 | if ((serial = ctx->serial_cb(ctx, ctx->serial_cb_data)) == NULL |
0f113f3e MC |
586 | || !TS_TST_INFO_set_serial(tst_info, serial)) |
587 | goto end; | |
75ebbd9a RS |
588 | if (!ctx->time_cb(ctx, ctx->time_cb_data, &sec, &usec) |
589 | || (asn1_time = | |
590 | TS_RESP_set_genTime_with_precision(NULL, sec, usec, | |
591 | ctx->clock_precision_digits)) == NULL | |
0f113f3e MC |
592 | || !TS_TST_INFO_set_time(tst_info, asn1_time)) |
593 | goto end; | |
594 | ||
0f113f3e | 595 | if ((ctx->seconds || ctx->millis || ctx->micros) |
75ebbd9a | 596 | && (accuracy = TS_ACCURACY_new()) == NULL) |
0f113f3e | 597 | goto end; |
0f113f3e MC |
598 | if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds)) |
599 | goto end; | |
600 | if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis)) | |
601 | goto end; | |
602 | if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros)) | |
603 | goto end; | |
604 | if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy)) | |
605 | goto end; | |
606 | ||
0f113f3e MC |
607 | if ((ctx->flags & TS_ORDERING) |
608 | && !TS_TST_INFO_set_ordering(tst_info, 1)) | |
609 | goto end; | |
610 | ||
ca4a494c | 611 | if ((nonce = ctx->request->nonce) != NULL |
0f113f3e MC |
612 | && !TS_TST_INFO_set_nonce(tst_info, nonce)) |
613 | goto end; | |
614 | ||
0f113f3e | 615 | if (ctx->flags & TS_TSA_NAME) { |
75ebbd9a | 616 | if ((tsa_name = GENERAL_NAME_new()) == NULL) |
0f113f3e MC |
617 | goto end; |
618 | tsa_name->type = GEN_DIRNAME; | |
619 | tsa_name->d.dirn = | |
a8d8e06b | 620 | X509_NAME_dup(X509_get_subject_name(ctx->signer_cert)); |
0f113f3e MC |
621 | if (!tsa_name->d.dirn) |
622 | goto end; | |
623 | if (!TS_TST_INFO_set_tsa(tst_info, tsa_name)) | |
624 | goto end; | |
625 | } | |
626 | ||
627 | result = 1; | |
c7235be6 | 628 | end: |
0f113f3e MC |
629 | if (!result) { |
630 | TS_TST_INFO_free(tst_info); | |
631 | tst_info = NULL; | |
632 | TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR); | |
633 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
634 | "Error during TSTInfo " | |
635 | "generation."); | |
636 | } | |
637 | GENERAL_NAME_free(tsa_name); | |
638 | TS_ACCURACY_free(accuracy); | |
639 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
640 | ASN1_INTEGER_free(serial); | |
641 | ||
642 | return tst_info; | |
643 | } | |
c7235be6 UM |
644 | |
645 | /* Processing the extensions of the request. */ | |
9c422b5b | 646 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx) |
0f113f3e | 647 | { |
ca4a494c | 648 | STACK_OF(X509_EXTENSION) *exts = ctx->request->extensions; |
0f113f3e MC |
649 | int i; |
650 | int ok = 1; | |
651 | ||
652 | for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) { | |
653 | X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); | |
654 | /* | |
18cd23df | 655 | * The last argument was previously (void *)ctx->extension_cb, |
0f113f3e MC |
656 | * but ISO C doesn't permit converting a function pointer to void *. |
657 | * For lack of better information, I'm placing a NULL there instead. | |
658 | * The callback can pick its own address out from the ctx anyway... | |
659 | */ | |
660 | ok = (*ctx->extension_cb) (ctx, ext, NULL); | |
661 | } | |
662 | ||
663 | return ok; | |
664 | } | |
c7235be6 UM |
665 | |
666 | /* Functions for signing the TS_TST_INFO structure of the context. */ | |
9c422b5b | 667 | static int ts_RESP_sign(TS_RESP_CTX *ctx) |
0f113f3e MC |
668 | { |
669 | int ret = 0; | |
670 | PKCS7 *p7 = NULL; | |
671 | PKCS7_SIGNER_INFO *si; | |
672 | STACK_OF(X509) *certs; /* Certificates to include in sc. */ | |
673 | ESS_SIGNING_CERT *sc = NULL; | |
674 | ASN1_OBJECT *oid; | |
675 | BIO *p7bio = NULL; | |
676 | int i; | |
677 | ||
0f113f3e MC |
678 | if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) { |
679 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
680 | goto err; | |
681 | } | |
682 | ||
75ebbd9a | 683 | if ((p7 = PKCS7_new()) == NULL) { |
0f113f3e MC |
684 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); |
685 | goto err; | |
686 | } | |
687 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) | |
688 | goto err; | |
0f113f3e MC |
689 | if (!ASN1_INTEGER_set(p7->d.sign->version, 3)) |
690 | goto err; | |
691 | ||
ca4a494c | 692 | if (ctx->request->cert_req) { |
0f113f3e MC |
693 | PKCS7_add_certificate(p7, ctx->signer_cert); |
694 | if (ctx->certs) { | |
695 | for (i = 0; i < sk_X509_num(ctx->certs); ++i) { | |
696 | X509 *cert = sk_X509_value(ctx->certs, i); | |
697 | PKCS7_add_certificate(p7, cert); | |
698 | } | |
699 | } | |
700 | } | |
701 | ||
75ebbd9a RS |
702 | if ((si = PKCS7_add_signature(p7, ctx->signer_cert, |
703 | ctx->signer_key, EVP_sha1())) == NULL) { | |
0f113f3e MC |
704 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR); |
705 | goto err; | |
706 | } | |
707 | ||
0f113f3e MC |
708 | oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); |
709 | if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, | |
710 | V_ASN1_OBJECT, oid)) { | |
711 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR); | |
712 | goto err; | |
713 | } | |
714 | ||
0f113f3e | 715 | certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL; |
9c422b5b | 716 | if ((sc = ess_SIGNING_CERT_new_init(ctx->signer_cert, certs)) == NULL) |
0f113f3e | 717 | goto err; |
0f113f3e MC |
718 | if (!ESS_add_signing_cert(si, sc)) { |
719 | TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR); | |
720 | goto err; | |
721 | } | |
722 | ||
9c422b5b | 723 | if (!ts_TST_INFO_content_new(p7)) |
0f113f3e | 724 | goto err; |
75ebbd9a | 725 | if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) { |
0f113f3e MC |
726 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); |
727 | goto err; | |
728 | } | |
0f113f3e MC |
729 | if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) { |
730 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
731 | goto err; | |
732 | } | |
0f113f3e MC |
733 | if (!PKCS7_dataFinal(p7, p7bio)) { |
734 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
735 | goto err; | |
736 | } | |
0f113f3e MC |
737 | TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info); |
738 | p7 = NULL; /* Ownership is lost. */ | |
739 | ctx->tst_info = NULL; /* Ownership is lost. */ | |
740 | ||
741 | ret = 1; | |
c7235be6 | 742 | err: |
0f113f3e MC |
743 | if (!ret) |
744 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
745 | "Error during signature " | |
746 | "generation."); | |
747 | BIO_free_all(p7bio); | |
748 | ESS_SIGNING_CERT_free(sc); | |
749 | PKCS7_free(p7); | |
750 | return ret; | |
751 | } | |
752 | ||
9c422b5b | 753 | static ESS_SIGNING_CERT *ess_SIGNING_CERT_new_init(X509 *signcert, |
0f113f3e MC |
754 | STACK_OF(X509) *certs) |
755 | { | |
756 | ESS_CERT_ID *cid; | |
757 | ESS_SIGNING_CERT *sc = NULL; | |
758 | int i; | |
759 | ||
75ebbd9a | 760 | if ((sc = ESS_SIGNING_CERT_new()) == NULL) |
0f113f3e | 761 | goto err; |
75ebbd9a RS |
762 | if (sc->cert_ids == NULL |
763 | && (sc->cert_ids = sk_ESS_CERT_ID_new_null()) == NULL) | |
0f113f3e MC |
764 | goto err; |
765 | ||
9c422b5b | 766 | if ((cid = ess_CERT_ID_new_init(signcert, 0)) == NULL |
0f113f3e MC |
767 | || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) |
768 | goto err; | |
0f113f3e MC |
769 | for (i = 0; i < sk_X509_num(certs); ++i) { |
770 | X509 *cert = sk_X509_value(certs, i); | |
9c422b5b | 771 | if ((cid = ess_CERT_ID_new_init(cert, 1)) == NULL |
0f113f3e MC |
772 | || !sk_ESS_CERT_ID_push(sc->cert_ids, cid)) |
773 | goto err; | |
774 | } | |
775 | ||
776 | return sc; | |
777 | err: | |
778 | ESS_SIGNING_CERT_free(sc); | |
779 | TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE); | |
780 | return NULL; | |
781 | } | |
c7235be6 | 782 | |
9c422b5b | 783 | static ESS_CERT_ID *ess_CERT_ID_new_init(X509 *cert, int issuer_needed) |
0f113f3e MC |
784 | { |
785 | ESS_CERT_ID *cid = NULL; | |
786 | GENERAL_NAME *name = NULL; | |
7e418832 | 787 | unsigned char cert_sha1[SHA_DIGEST_LENGTH]; |
0f113f3e | 788 | |
0f113f3e | 789 | X509_check_purpose(cert, -1, 0); |
75ebbd9a | 790 | if ((cid = ESS_CERT_ID_new()) == NULL) |
0f113f3e | 791 | goto err; |
7e418832 DSH |
792 | X509_digest(cert, EVP_sha1(), cert_sha1, NULL); |
793 | if (!ASN1_OCTET_STRING_set(cid->hash, cert_sha1, SHA_DIGEST_LENGTH)) | |
0f113f3e MC |
794 | goto err; |
795 | ||
796 | /* Setting the issuer/serial if requested. */ | |
797 | if (issuer_needed) { | |
75ebbd9a RS |
798 | if (cid->issuer_serial == NULL |
799 | && (cid->issuer_serial = ESS_ISSUER_SERIAL_new()) == NULL) | |
0f113f3e | 800 | goto err; |
75ebbd9a | 801 | if ((name = GENERAL_NAME_new()) == NULL) |
0f113f3e MC |
802 | goto err; |
803 | name->type = GEN_DIRNAME; | |
a8d8e06b | 804 | if ((name->d.dirn = X509_NAME_dup(X509_get_issuer_name(cert))) == NULL) |
0f113f3e MC |
805 | goto err; |
806 | if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name)) | |
807 | goto err; | |
808 | name = NULL; /* Ownership is lost. */ | |
0f113f3e MC |
809 | ASN1_INTEGER_free(cid->issuer_serial->serial); |
810 | if (!(cid->issuer_serial->serial = | |
a8d8e06b | 811 | ASN1_INTEGER_dup(X509_get_serialNumber(cert)))) |
0f113f3e MC |
812 | goto err; |
813 | } | |
814 | ||
815 | return cid; | |
816 | err: | |
817 | GENERAL_NAME_free(name); | |
818 | ESS_CERT_ID_free(cid); | |
819 | TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE); | |
820 | return NULL; | |
821 | } | |
c7235be6 | 822 | |
9c422b5b | 823 | static int ts_TST_INFO_content_new(PKCS7 *p7) |
0f113f3e MC |
824 | { |
825 | PKCS7 *ret = NULL; | |
826 | ASN1_OCTET_STRING *octet_string = NULL; | |
827 | ||
828 | /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */ | |
75ebbd9a | 829 | if ((ret = PKCS7_new()) == NULL) |
0f113f3e | 830 | goto err; |
75ebbd9a | 831 | if ((ret->d.other = ASN1_TYPE_new()) == NULL) |
0f113f3e MC |
832 | goto err; |
833 | ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); | |
75ebbd9a | 834 | if ((octet_string = ASN1_OCTET_STRING_new()) == NULL) |
0f113f3e MC |
835 | goto err; |
836 | ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string); | |
837 | octet_string = NULL; | |
838 | ||
839 | /* Add encapsulated content to signed PKCS7 structure. */ | |
840 | if (!PKCS7_set_content(p7, ret)) | |
841 | goto err; | |
842 | ||
843 | return 1; | |
c7235be6 | 844 | err: |
0f113f3e MC |
845 | ASN1_OCTET_STRING_free(octet_string); |
846 | PKCS7_free(ret); | |
847 | return 0; | |
848 | } | |
c7235be6 UM |
849 | |
850 | static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc) | |
0f113f3e MC |
851 | { |
852 | ASN1_STRING *seq = NULL; | |
853 | unsigned char *p, *pp = NULL; | |
854 | int len; | |
855 | ||
856 | len = i2d_ESS_SIGNING_CERT(sc, NULL); | |
75ebbd9a | 857 | if ((pp = OPENSSL_malloc(len)) == NULL) { |
0f113f3e MC |
858 | TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); |
859 | goto err; | |
860 | } | |
861 | p = pp; | |
862 | i2d_ESS_SIGNING_CERT(sc, &p); | |
75ebbd9a | 863 | if ((seq = ASN1_STRING_new()) == NULL || !ASN1_STRING_set(seq, pp, len)) { |
0f113f3e MC |
864 | TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE); |
865 | goto err; | |
866 | } | |
867 | OPENSSL_free(pp); | |
868 | pp = NULL; | |
869 | return PKCS7_add_signed_attribute(si, | |
870 | NID_id_smime_aa_signingCertificate, | |
871 | V_ASN1_SEQUENCE, seq); | |
c7235be6 | 872 | err: |
0f113f3e MC |
873 | ASN1_STRING_free(seq); |
874 | OPENSSL_free(pp); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | static ASN1_GENERALIZEDTIME | |
880 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time, | |
881 | long sec, long usec, unsigned precision) | |
882 | { | |
883 | time_t time_sec = (time_t)sec; | |
884 | struct tm *tm = NULL; | |
885 | char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS]; | |
886 | char *p = genTime_str; | |
887 | char *p_end = genTime_str + sizeof(genTime_str); | |
888 | ||
889 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
890 | goto err; | |
891 | ||
75ebbd9a | 892 | if ((tm = gmtime(&time_sec)) == NULL) |
0f113f3e MC |
893 | goto err; |
894 | ||
895 | /* | |
896 | * Put "genTime_str" in GeneralizedTime format. We work around the | |
897 | * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST | |
898 | * NOT include fractional seconds") and OpenSSL related functions to | |
899 | * meet the rfc3161 requirement: "GeneralizedTime syntax can include | |
900 | * fraction-of-second details". | |
901 | */ | |
902 | p += BIO_snprintf(p, p_end - p, | |
903 | "%04d%02d%02d%02d%02d%02d", | |
904 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, | |
905 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
906 | if (precision > 0) { | |
0f113f3e | 907 | BIO_snprintf(p, 2 + precision, ".%06ld", usec); |
0f113f3e MC |
908 | p += strlen(p); |
909 | ||
910 | /* | |
911 | * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the | |
912 | * following restrictions for a DER-encoding, which OpenSSL | |
913 | * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't | |
914 | * support: "The encoding MUST terminate with a "Z" (which means | |
915 | * "Zulu" time). The decimal point element, if present, MUST be the | |
916 | * point option ".". The fractional-seconds elements, if present, | |
917 | * MUST omit all trailing 0's; if the elements correspond to 0, they | |
918 | * MUST be wholly omitted, and the decimal point element also MUST be | |
919 | * omitted." | |
920 | */ | |
921 | /* | |
922 | * Remove trailing zeros. The dot guarantees the exit condition of | |
923 | * this loop even if all the digits are zero. | |
924 | */ | |
925 | while (*--p == '0') | |
18cd23df | 926 | continue; |
0f113f3e MC |
927 | if (*p != '.') |
928 | ++p; | |
929 | } | |
0f113f3e MC |
930 | *p++ = 'Z'; |
931 | *p++ = '\0'; | |
932 | ||
75ebbd9a RS |
933 | if (asn1_time == NULL |
934 | && (asn1_time = ASN1_GENERALIZEDTIME_new()) == NULL) | |
0f113f3e MC |
935 | goto err; |
936 | if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) { | |
937 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
938 | goto err; | |
939 | } | |
0f113f3e | 940 | return asn1_time; |
18cd23df | 941 | |
c7235be6 | 942 | err: |
0f113f3e MC |
943 | TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME); |
944 | return NULL; | |
945 | } |