source: EcnlProtoTool/trunk/openssl-1.1.0e/crypto/ts/ts_rsp_sign.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 27.4 KB
Line 
1/*
2 * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include "internal/cryptlib.h"
11
12#if defined(OPENSSL_SYS_UNIX)
13# include <sys/time.h>
14#endif
15
16#include <openssl/objects.h>
17#include <openssl/ts.h>
18#include <openssl/pkcs7.h>
19#include "ts_lcl.h"
20
21static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *);
22static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec);
23static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *);
24
25static void ts_RESP_CTX_init(TS_RESP_CTX *ctx);
26static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx);
27static int ts_RESP_check_request(TS_RESP_CTX *ctx);
28static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx);
29static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx,
30 ASN1_OBJECT *policy);
31static int ts_RESP_process_extensions(TS_RESP_CTX *ctx);
32static int ts_RESP_sign(TS_RESP_CTX *ctx);
33
34static ESS_SIGNING_CERT *ess_SIGNING_CERT_new_init(X509 *signcert,
35 STACK_OF(X509) *certs);
36static ESS_CERT_ID *ess_CERT_ID_new_init(X509 *cert, int issuer_needed);
37static int ts_TST_INFO_content_new(PKCS7 *p7);
38static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc);
39
40static ASN1_GENERALIZEDTIME
41*TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long,
42 unsigned);
43
44/* Default callback for response generation. */
45static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data)
46{
47 ASN1_INTEGER *serial = ASN1_INTEGER_new();
48
49 if (serial == NULL)
50 goto err;
51 if (!ASN1_INTEGER_set(serial, 1))
52 goto err;
53 return serial;
54
55 err:
56 TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE);
57 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
58 "Error during serial number generation.");
59 return NULL;
60}
61
62#if defined(OPENSSL_SYS_UNIX)
63
64static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
65 long *sec, long *usec)
66{
67 struct timeval tv;
68 if (gettimeofday(&tv, NULL) != 0) {
69 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
70 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
71 "Time is not available.");
72 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
73 return 0;
74 }
75 *sec = tv.tv_sec;
76 *usec = tv.tv_usec;
77
78 return 1;
79}
80
81#else
82
83static int def_time_cb(struct TS_resp_ctx *ctx, void *data,
84 long *sec, long *usec)
85{
86 time_t t;
87 if (time(&t) == (time_t)-1) {
88 TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR);
89 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
90 "Time is not available.");
91 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE);
92 return 0;
93 }
94 *sec = (long)t;
95 *usec = 0;
96
97 return 1;
98}
99
100#endif
101
102static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext,
103 void *data)
104{
105 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
106 "Unsupported extension.");
107 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION);
108 return 0;
109}
110
111/* TS_RESP_CTX management functions. */
112
113TS_RESP_CTX *TS_RESP_CTX_new()
114{
115 TS_RESP_CTX *ctx;
116
117 if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) {
118 TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE);
119 return NULL;
120 }
121
122 ctx->signer_md = EVP_sha256();
123
124 ctx->serial_cb = def_serial_cb;
125 ctx->time_cb = def_time_cb;
126 ctx->extension_cb = def_extension_cb;
127
128 return ctx;
129}
130
131void TS_RESP_CTX_free(TS_RESP_CTX *ctx)
132{
133 if (!ctx)
134 return;
135
136 X509_free(ctx->signer_cert);
137 EVP_PKEY_free(ctx->signer_key);
138 sk_X509_pop_free(ctx->certs, X509_free);
139 sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free);
140 ASN1_OBJECT_free(ctx->default_policy);
141 sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */
142 ASN1_INTEGER_free(ctx->seconds);
143 ASN1_INTEGER_free(ctx->millis);
144 ASN1_INTEGER_free(ctx->micros);
145 OPENSSL_free(ctx);
146}
147
148int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer)
149{
150 if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) {
151 TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT,
152 TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE);
153 return 0;
154 }
155 X509_free(ctx->signer_cert);
156 ctx->signer_cert = signer;
157 X509_up_ref(ctx->signer_cert);
158 return 1;
159}
160
161int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key)
162{
163 EVP_PKEY_free(ctx->signer_key);
164 ctx->signer_key = key;
165 EVP_PKEY_up_ref(ctx->signer_key);
166
167 return 1;
168}
169
170int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx, const EVP_MD *md)
171{
172 ctx->signer_md = md;
173 return 1;
174}
175
176int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy)
177{
178 ASN1_OBJECT_free(ctx->default_policy);
179 if ((ctx->default_policy = OBJ_dup(def_policy)) == NULL)
180 goto err;
181 return 1;
182 err:
183 TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE);
184 return 0;
185}
186
187int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs)
188{
189
190 sk_X509_pop_free(ctx->certs, X509_free);
191 ctx->certs = NULL;
192 if (!certs)
193 return 1;
194 if ((ctx->certs = X509_chain_up_ref(certs)) == NULL) {
195 TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE);
196 return 0;
197 }
198
199 return 1;
200}
201
202int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy)
203{
204 ASN1_OBJECT *copy = NULL;
205
206 if (ctx->policies == NULL
207 && (ctx->policies = sk_ASN1_OBJECT_new_null()) == NULL)
208 goto err;
209 if ((copy = OBJ_dup(policy)) == NULL)
210 goto err;
211 if (!sk_ASN1_OBJECT_push(ctx->policies, copy))
212 goto err;
213
214 return 1;
215 err:
216 TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE);
217 ASN1_OBJECT_free(copy);
218 return 0;
219}
220
221int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md)
222{
223 if (ctx->mds == NULL
224 && (ctx->mds = sk_EVP_MD_new_null()) == NULL)
225 goto err;
226 if (!sk_EVP_MD_push(ctx->mds, md))
227 goto err;
228
229 return 1;
230 err:
231 TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE);
232 return 0;
233}
234
235#define TS_RESP_CTX_accuracy_free(ctx) \
236 ASN1_INTEGER_free(ctx->seconds); \
237 ctx->seconds = NULL; \
238 ASN1_INTEGER_free(ctx->millis); \
239 ctx->millis = NULL; \
240 ASN1_INTEGER_free(ctx->micros); \
241 ctx->micros = NULL;
242
243int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx,
244 int secs, int millis, int micros)
245{
246
247 TS_RESP_CTX_accuracy_free(ctx);
248 if (secs
249 && ((ctx->seconds = ASN1_INTEGER_new()) == NULL
250 || !ASN1_INTEGER_set(ctx->seconds, secs)))
251 goto err;
252 if (millis
253 && ((ctx->millis = ASN1_INTEGER_new()) == NULL
254 || !ASN1_INTEGER_set(ctx->millis, millis)))
255 goto err;
256 if (micros
257 && ((ctx->micros = ASN1_INTEGER_new()) == NULL
258 || !ASN1_INTEGER_set(ctx->micros, micros)))
259 goto err;
260
261 return 1;
262 err:
263 TS_RESP_CTX_accuracy_free(ctx);
264 TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE);
265 return 0;
266}
267
268void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags)
269{
270 ctx->flags |= flags;
271}
272
273void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data)
274{
275 ctx->serial_cb = cb;
276 ctx->serial_cb_data = data;
277}
278
279void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data)
280{
281 ctx->time_cb = cb;
282 ctx->time_cb_data = data;
283}
284
285void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx,
286 TS_extension_cb cb, void *data)
287{
288 ctx->extension_cb = cb;
289 ctx->extension_cb_data = data;
290}
291
292int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx,
293 int status, const char *text)
294{
295 TS_STATUS_INFO *si = NULL;
296 ASN1_UTF8STRING *utf8_text = NULL;
297 int ret = 0;
298
299 if ((si = TS_STATUS_INFO_new()) == NULL)
300 goto err;
301 if (!ASN1_INTEGER_set(si->status, status))
302 goto err;
303 if (text) {
304 if ((utf8_text = ASN1_UTF8STRING_new()) == NULL
305 || !ASN1_STRING_set(utf8_text, text, strlen(text)))
306 goto err;
307 if (si->text == NULL
308 && (si->text = sk_ASN1_UTF8STRING_new_null()) == NULL)
309 goto err;
310 if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text))
311 goto err;
312 utf8_text = NULL; /* Ownership is lost. */
313 }
314 if (!TS_RESP_set_status_info(ctx->response, si))
315 goto err;
316 ret = 1;
317 err:
318 if (!ret)
319 TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE);
320 TS_STATUS_INFO_free(si);
321 ASN1_UTF8STRING_free(utf8_text);
322 return ret;
323}
324
325int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx,
326 int status, const char *text)
327{
328 int ret = 1;
329 TS_STATUS_INFO *si = ctx->response->status_info;
330
331 if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) {
332 ret = TS_RESP_CTX_set_status_info(ctx, status, text);
333 }
334 return ret;
335}
336
337int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure)
338{
339 TS_STATUS_INFO *si = ctx->response->status_info;
340 if (si->failure_info == NULL
341 && (si->failure_info = ASN1_BIT_STRING_new()) == NULL)
342 goto err;
343 if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1))
344 goto err;
345 return 1;
346 err:
347 TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE);
348 return 0;
349}
350
351TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx)
352{
353 return ctx->request;
354}
355
356TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx)
357{
358 return ctx->tst_info;
359}
360
361int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx,
362 unsigned precision)
363{
364 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
365 return 0;
366 ctx->clock_precision_digits = precision;
367 return 1;
368}
369
370/* Main entry method of the response generation. */
371TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio)
372{
373 ASN1_OBJECT *policy;
374 TS_RESP *response;
375 int result = 0;
376
377 ts_RESP_CTX_init(ctx);
378
379 if ((ctx->response = TS_RESP_new()) == NULL) {
380 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE);
381 goto end;
382 }
383 if ((ctx->request = d2i_TS_REQ_bio(req_bio, NULL)) == NULL) {
384 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
385 "Bad request format or system error.");
386 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
387 goto end;
388 }
389 if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL))
390 goto end;
391 if (!ts_RESP_check_request(ctx))
392 goto end;
393 if ((policy = ts_RESP_get_policy(ctx)) == NULL)
394 goto end;
395 if ((ctx->tst_info = ts_RESP_create_tst_info(ctx, policy)) == NULL)
396 goto end;
397 if (!ts_RESP_process_extensions(ctx))
398 goto end;
399 if (!ts_RESP_sign(ctx))
400 goto end;
401 result = 1;
402
403 end:
404 if (!result) {
405 TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR);
406 if (ctx->response != NULL) {
407 if (TS_RESP_CTX_set_status_info_cond(ctx,
408 TS_STATUS_REJECTION,
409 "Error during response "
410 "generation.") == 0) {
411 TS_RESP_free(ctx->response);
412 ctx->response = NULL;
413 }
414 }
415 }
416 response = ctx->response;
417 ctx->response = NULL; /* Ownership will be returned to caller. */
418 ts_RESP_CTX_cleanup(ctx);
419 return response;
420}
421
422/* Initializes the variable part of the context. */
423static void ts_RESP_CTX_init(TS_RESP_CTX *ctx)
424{
425 ctx->request = NULL;
426 ctx->response = NULL;
427 ctx->tst_info = NULL;
428}
429
430/* Cleans up the variable part of the context. */
431static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx)
432{
433 TS_REQ_free(ctx->request);
434 ctx->request = NULL;
435 TS_RESP_free(ctx->response);
436 ctx->response = NULL;
437 TS_TST_INFO_free(ctx->tst_info);
438 ctx->tst_info = NULL;
439}
440
441/* Checks the format and content of the request. */
442static int ts_RESP_check_request(TS_RESP_CTX *ctx)
443{
444 TS_REQ *request = ctx->request;
445 TS_MSG_IMPRINT *msg_imprint;
446 X509_ALGOR *md_alg;
447 int md_alg_id;
448 const ASN1_OCTET_STRING *digest;
449 const EVP_MD *md = NULL;
450 int i;
451
452 if (TS_REQ_get_version(request) != 1) {
453 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
454 "Bad request version.");
455 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST);
456 return 0;
457 }
458
459 msg_imprint = request->msg_imprint;
460 md_alg = msg_imprint->hash_algo;
461 md_alg_id = OBJ_obj2nid(md_alg->algorithm);
462 for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) {
463 const EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i);
464 if (md_alg_id == EVP_MD_type(current_md))
465 md = current_md;
466 }
467 if (!md) {
468 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
469 "Message digest algorithm is "
470 "not supported.");
471 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
472 return 0;
473 }
474
475 if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) {
476 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
477 "Superfluous message digest "
478 "parameter.");
479 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG);
480 return 0;
481 }
482 digest = msg_imprint->hashed_msg;
483 if (digest->length != EVP_MD_size(md)) {
484 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
485 "Bad message digest.");
486 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT);
487 return 0;
488 }
489
490 return 1;
491}
492
493/* Returns the TSA policy based on the requested and acceptable policies. */
494static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx)
495{
496 ASN1_OBJECT *requested = ctx->request->policy_id;
497 ASN1_OBJECT *policy = NULL;
498 int i;
499
500 if (ctx->default_policy == NULL) {
501 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER);
502 return NULL;
503 }
504 if (!requested || !OBJ_cmp(requested, ctx->default_policy))
505 policy = ctx->default_policy;
506
507 /* Check if the policy is acceptable. */
508 for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) {
509 ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i);
510 if (!OBJ_cmp(requested, current))
511 policy = current;
512 }
513 if (!policy) {
514 TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY);
515 TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
516 "Requested policy is not " "supported.");
517 TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY);
518 }
519 return policy;
520}
521
522/* Creates the TS_TST_INFO object based on the settings of the context. */
523static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx,
524 ASN1_OBJECT *policy)
525{
526 int result = 0;
527 TS_TST_INFO *tst_info = NULL;
528 ASN1_INTEGER *serial = NULL;
529 ASN1_GENERALIZEDTIME *asn1_time = NULL;
530 long sec, usec;
531 TS_ACCURACY *accuracy = NULL;
532 const ASN1_INTEGER *nonce;
533 GENERAL_NAME *tsa_name = NULL;
534
535 if ((tst_info = TS_TST_INFO_new()) == NULL)
536 goto end;
537 if (!TS_TST_INFO_set_version(tst_info, 1))
538 goto end;
539 if (!TS_TST_INFO_set_policy_id(tst_info, policy))
540 goto end;
541 if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint))
542 goto end;
543 if ((serial = ctx->serial_cb(ctx, ctx->serial_cb_data)) == NULL
544 || !TS_TST_INFO_set_serial(tst_info, serial))
545 goto end;
546 if (!ctx->time_cb(ctx, ctx->time_cb_data, &sec, &usec)
547 || (asn1_time =
548 TS_RESP_set_genTime_with_precision(NULL, sec, usec,
549 ctx->clock_precision_digits)) == NULL
550 || !TS_TST_INFO_set_time(tst_info, asn1_time))
551 goto end;
552
553 if ((ctx->seconds || ctx->millis || ctx->micros)
554 && (accuracy = TS_ACCURACY_new()) == NULL)
555 goto end;
556 if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds))
557 goto end;
558 if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis))
559 goto end;
560 if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros))
561 goto end;
562 if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy))
563 goto end;
564
565 if ((ctx->flags & TS_ORDERING)
566 && !TS_TST_INFO_set_ordering(tst_info, 1))
567 goto end;
568
569 if ((nonce = ctx->request->nonce) != NULL
570 && !TS_TST_INFO_set_nonce(tst_info, nonce))
571 goto end;
572
573 if (ctx->flags & TS_TSA_NAME) {
574 if ((tsa_name = GENERAL_NAME_new()) == NULL)
575 goto end;
576 tsa_name->type = GEN_DIRNAME;
577 tsa_name->d.dirn =
578 X509_NAME_dup(X509_get_subject_name(ctx->signer_cert));
579 if (!tsa_name->d.dirn)
580 goto end;
581 if (!TS_TST_INFO_set_tsa(tst_info, tsa_name))
582 goto end;
583 }
584
585 result = 1;
586 end:
587 if (!result) {
588 TS_TST_INFO_free(tst_info);
589 tst_info = NULL;
590 TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR);
591 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
592 "Error during TSTInfo "
593 "generation.");
594 }
595 GENERAL_NAME_free(tsa_name);
596 TS_ACCURACY_free(accuracy);
597 ASN1_GENERALIZEDTIME_free(asn1_time);
598 ASN1_INTEGER_free(serial);
599
600 return tst_info;
601}
602
603/* Processing the extensions of the request. */
604static int ts_RESP_process_extensions(TS_RESP_CTX *ctx)
605{
606 STACK_OF(X509_EXTENSION) *exts = ctx->request->extensions;
607 int i;
608 int ok = 1;
609
610 for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) {
611 X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
612 /*
613 * The last argument was previously (void *)ctx->extension_cb,
614 * but ISO C doesn't permit converting a function pointer to void *.
615 * For lack of better information, I'm placing a NULL there instead.
616 * The callback can pick its own address out from the ctx anyway...
617 */
618 ok = (*ctx->extension_cb) (ctx, ext, NULL);
619 }
620
621 return ok;
622}
623
624/* Functions for signing the TS_TST_INFO structure of the context. */
625static int ts_RESP_sign(TS_RESP_CTX *ctx)
626{
627 int ret = 0;
628 PKCS7 *p7 = NULL;
629 PKCS7_SIGNER_INFO *si;
630 STACK_OF(X509) *certs; /* Certificates to include in sc. */
631 ESS_SIGNING_CERT *sc = NULL;
632 ASN1_OBJECT *oid;
633 BIO *p7bio = NULL;
634 int i;
635
636 if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) {
637 TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE);
638 goto err;
639 }
640
641 if ((p7 = PKCS7_new()) == NULL) {
642 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
643 goto err;
644 }
645 if (!PKCS7_set_type(p7, NID_pkcs7_signed))
646 goto err;
647 if (!ASN1_INTEGER_set(p7->d.sign->version, 3))
648 goto err;
649
650 if (ctx->request->cert_req) {
651 PKCS7_add_certificate(p7, ctx->signer_cert);
652 if (ctx->certs) {
653 for (i = 0; i < sk_X509_num(ctx->certs); ++i) {
654 X509 *cert = sk_X509_value(ctx->certs, i);
655 PKCS7_add_certificate(p7, cert);
656 }
657 }
658 }
659
660 if ((si = PKCS7_add_signature(p7, ctx->signer_cert,
661 ctx->signer_key, ctx->signer_md)) == NULL) {
662 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR);
663 goto err;
664 }
665
666 oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
667 if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
668 V_ASN1_OBJECT, oid)) {
669 TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR);
670 goto err;
671 }
672
673 certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL;
674 if ((sc = ess_SIGNING_CERT_new_init(ctx->signer_cert, certs)) == NULL)
675 goto err;
676 if (!ESS_add_signing_cert(si, sc)) {
677 TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR);
678 goto err;
679 }
680
681 if (!ts_TST_INFO_content_new(p7))
682 goto err;
683 if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) {
684 TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE);
685 goto err;
686 }
687 if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) {
688 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
689 goto err;
690 }
691 if (!PKCS7_dataFinal(p7, p7bio)) {
692 TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN);
693 goto err;
694 }
695 TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info);
696 p7 = NULL; /* Ownership is lost. */
697 ctx->tst_info = NULL; /* Ownership is lost. */
698
699 ret = 1;
700 err:
701 if (!ret)
702 TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION,
703 "Error during signature "
704 "generation.");
705 BIO_free_all(p7bio);
706 ESS_SIGNING_CERT_free(sc);
707 PKCS7_free(p7);
708 return ret;
709}
710
711static ESS_SIGNING_CERT *ess_SIGNING_CERT_new_init(X509 *signcert,
712 STACK_OF(X509) *certs)
713{
714 ESS_CERT_ID *cid;
715 ESS_SIGNING_CERT *sc = NULL;
716 int i;
717
718 if ((sc = ESS_SIGNING_CERT_new()) == NULL)
719 goto err;
720 if (sc->cert_ids == NULL
721 && (sc->cert_ids = sk_ESS_CERT_ID_new_null()) == NULL)
722 goto err;
723
724 if ((cid = ess_CERT_ID_new_init(signcert, 0)) == NULL
725 || !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
726 goto err;
727 for (i = 0; i < sk_X509_num(certs); ++i) {
728 X509 *cert = sk_X509_value(certs, i);
729 if ((cid = ess_CERT_ID_new_init(cert, 1)) == NULL
730 || !sk_ESS_CERT_ID_push(sc->cert_ids, cid))
731 goto err;
732 }
733
734 return sc;
735 err:
736 ESS_SIGNING_CERT_free(sc);
737 TSerr(TS_F_ESS_SIGNING_CERT_NEW_INIT, ERR_R_MALLOC_FAILURE);
738 return NULL;
739}
740
741static ESS_CERT_ID *ess_CERT_ID_new_init(X509 *cert, int issuer_needed)
742{
743 ESS_CERT_ID *cid = NULL;
744 GENERAL_NAME *name = NULL;
745 unsigned char cert_sha1[SHA_DIGEST_LENGTH];
746
747 /* Call for side-effect of computing hash and caching extensions */
748 X509_check_purpose(cert, -1, 0);
749 if ((cid = ESS_CERT_ID_new()) == NULL)
750 goto err;
751 X509_digest(cert, EVP_sha1(), cert_sha1, NULL);
752 if (!ASN1_OCTET_STRING_set(cid->hash, cert_sha1, SHA_DIGEST_LENGTH))
753 goto err;
754
755 /* Setting the issuer/serial if requested. */
756 if (issuer_needed) {
757 if (cid->issuer_serial == NULL
758 && (cid->issuer_serial = ESS_ISSUER_SERIAL_new()) == NULL)
759 goto err;
760 if ((name = GENERAL_NAME_new()) == NULL)
761 goto err;
762 name->type = GEN_DIRNAME;
763 if ((name->d.dirn = X509_NAME_dup(X509_get_issuer_name(cert))) == NULL)
764 goto err;
765 if (!sk_GENERAL_NAME_push(cid->issuer_serial->issuer, name))
766 goto err;
767 name = NULL; /* Ownership is lost. */
768 ASN1_INTEGER_free(cid->issuer_serial->serial);
769 if (!(cid->issuer_serial->serial =
770 ASN1_INTEGER_dup(X509_get_serialNumber(cert))))
771 goto err;
772 }
773
774 return cid;
775 err:
776 GENERAL_NAME_free(name);
777 ESS_CERT_ID_free(cid);
778 TSerr(TS_F_ESS_CERT_ID_NEW_INIT, ERR_R_MALLOC_FAILURE);
779 return NULL;
780}
781
782static int ts_TST_INFO_content_new(PKCS7 *p7)
783{
784 PKCS7 *ret = NULL;
785 ASN1_OCTET_STRING *octet_string = NULL;
786
787 /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */
788 if ((ret = PKCS7_new()) == NULL)
789 goto err;
790 if ((ret->d.other = ASN1_TYPE_new()) == NULL)
791 goto err;
792 ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo);
793 if ((octet_string = ASN1_OCTET_STRING_new()) == NULL)
794 goto err;
795 ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string);
796 octet_string = NULL;
797
798 /* Add encapsulated content to signed PKCS7 structure. */
799 if (!PKCS7_set_content(p7, ret))
800 goto err;
801
802 return 1;
803 err:
804 ASN1_OCTET_STRING_free(octet_string);
805 PKCS7_free(ret);
806 return 0;
807}
808
809static int ESS_add_signing_cert(PKCS7_SIGNER_INFO *si, ESS_SIGNING_CERT *sc)
810{
811 ASN1_STRING *seq = NULL;
812 unsigned char *p, *pp = NULL;
813 int len;
814
815 len = i2d_ESS_SIGNING_CERT(sc, NULL);
816 if ((pp = OPENSSL_malloc(len)) == NULL) {
817 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
818 goto err;
819 }
820 p = pp;
821 i2d_ESS_SIGNING_CERT(sc, &p);
822 if ((seq = ASN1_STRING_new()) == NULL || !ASN1_STRING_set(seq, pp, len)) {
823 TSerr(TS_F_ESS_ADD_SIGNING_CERT, ERR_R_MALLOC_FAILURE);
824 goto err;
825 }
826 OPENSSL_free(pp);
827 pp = NULL;
828 return PKCS7_add_signed_attribute(si,
829 NID_id_smime_aa_signingCertificate,
830 V_ASN1_SEQUENCE, seq);
831 err:
832 ASN1_STRING_free(seq);
833 OPENSSL_free(pp);
834
835 return 0;
836}
837
838static ASN1_GENERALIZEDTIME
839*TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *asn1_time,
840 long sec, long usec, unsigned precision)
841{
842 time_t time_sec = (time_t)sec;
843 struct tm *tm = NULL;
844 char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS];
845 char *p = genTime_str;
846 char *p_end = genTime_str + sizeof(genTime_str);
847
848 if (precision > TS_MAX_CLOCK_PRECISION_DIGITS)
849 goto err;
850
851 if ((tm = gmtime(&time_sec)) == NULL)
852 goto err;
853
854 /*
855 * Put "genTime_str" in GeneralizedTime format. We work around the
856 * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST
857 * NOT include fractional seconds") and OpenSSL related functions to
858 * meet the rfc3161 requirement: "GeneralizedTime syntax can include
859 * fraction-of-second details".
860 */
861 p += BIO_snprintf(p, p_end - p,
862 "%04d%02d%02d%02d%02d%02d",
863 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
864 tm->tm_hour, tm->tm_min, tm->tm_sec);
865 if (precision > 0) {
866 BIO_snprintf(p, 2 + precision, ".%06ld", usec);
867 p += strlen(p);
868
869 /*
870 * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the
871 * following restrictions for a DER-encoding, which OpenSSL
872 * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't
873 * support: "The encoding MUST terminate with a "Z" (which means
874 * "Zulu" time). The decimal point element, if present, MUST be the
875 * point option ".". The fractional-seconds elements, if present,
876 * MUST omit all trailing 0's; if the elements correspond to 0, they
877 * MUST be wholly omitted, and the decimal point element also MUST be
878 * omitted."
879 */
880 /*
881 * Remove trailing zeros. The dot guarantees the exit condition of
882 * this loop even if all the digits are zero.
883 */
884 while (*--p == '0')
885 continue;
886 if (*p != '.')
887 ++p;
888 }
889 *p++ = 'Z';
890 *p++ = '\0';
891
892 if (asn1_time == NULL
893 && (asn1_time = ASN1_GENERALIZEDTIME_new()) == NULL)
894 goto err;
895 if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) {
896 ASN1_GENERALIZEDTIME_free(asn1_time);
897 goto err;
898 }
899 return asn1_time;
900
901 err:
902 TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME);
903 return NULL;
904}
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