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Commit | Line | Data |
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0f113f3e | 1 | /* |
a28d06f3 | 2 | * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved. |
c7235be6 | 3 | * |
a1b4409d | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
4f22f405 RS |
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 | |
c7235be6 UM |
8 | */ |
9 | ||
4cff10dc | 10 | #include "e_os.h" |
b39fc560 | 11 | #include "internal/cryptlib.h" |
c7235be6 | 12 | |
c7235be6 UM |
13 | #include <openssl/objects.h> |
14 | #include <openssl/ts.h> | |
15 | #include <openssl/pkcs7.h> | |
98c03302 | 16 | #include <openssl/crypto.h> |
706457b7 | 17 | #include "ts_local.h" |
25f2138b | 18 | #include "crypto/ess.h" |
c7235be6 | 19 | |
852c2ed2 RS |
20 | DEFINE_STACK_OF_CONST(EVP_MD) |
21 | ||
c7235be6 UM |
22 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *); |
23 | static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec); | |
24 | static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *); | |
25 | ||
9c422b5b RS |
26 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx); |
27 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx); | |
28 | static int ts_RESP_check_request(TS_RESP_CTX *ctx); | |
29 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx); | |
30 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, | |
0f113f3e | 31 | ASN1_OBJECT *policy); |
9c422b5b RS |
32 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx); |
33 | static int ts_RESP_sign(TS_RESP_CTX *ctx); | |
c7235be6 | 34 | |
9c422b5b | 35 | static int ts_TST_INFO_content_new(PKCS7 *p7); |
c7235be6 | 36 | |
0f113f3e MC |
37 | static ASN1_GENERALIZEDTIME |
38 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long, | |
39 | unsigned); | |
c7235be6 | 40 | |
18cd23df | 41 | /* Default callback for response generation. */ |
c7235be6 | 42 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data) |
0f113f3e MC |
43 | { |
44 | ASN1_INTEGER *serial = ASN1_INTEGER_new(); | |
18cd23df | 45 | |
90945fa3 | 46 | if (serial == NULL) |
0f113f3e MC |
47 | goto err; |
48 | if (!ASN1_INTEGER_set(serial, 1)) | |
49 | goto err; | |
50 | return serial; | |
18cd23df | 51 | |
c7235be6 | 52 | err: |
9311d0c4 | 53 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
54 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
55 | "Error during serial number generation."); | |
d4d67baf | 56 | ASN1_INTEGER_free(serial); |
0f113f3e MC |
57 | return NULL; |
58 | } | |
c7235be6 UM |
59 | |
60 | #if defined(OPENSSL_SYS_UNIX) | |
61 | ||
0f113f3e MC |
62 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
63 | long *sec, long *usec) | |
64 | { | |
65 | struct timeval tv; | |
66 | if (gettimeofday(&tv, NULL) != 0) { | |
9311d0c4 | 67 | ERR_raise(ERR_LIB_TS, TS_R_TIME_SYSCALL_ERROR); |
0f113f3e MC |
68 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
69 | "Time is not available."); | |
70 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
71 | return 0; | |
72 | } | |
0f113f3e MC |
73 | *sec = tv.tv_sec; |
74 | *usec = tv.tv_usec; | |
75 | ||
76 | return 1; | |
77 | } | |
c7235be6 UM |
78 | |
79 | #else | |
80 | ||
0f113f3e MC |
81 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
82 | long *sec, long *usec) | |
83 | { | |
84 | time_t t; | |
85 | if (time(&t) == (time_t)-1) { | |
9311d0c4 | 86 | ERR_raise(ERR_LIB_TS, TS_R_TIME_SYSCALL_ERROR); |
0f113f3e MC |
87 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
88 | "Time is not available."); | |
89 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
90 | return 0; | |
91 | } | |
0f113f3e MC |
92 | *sec = (long)t; |
93 | *usec = 0; | |
94 | ||
95 | return 1; | |
96 | } | |
c7235be6 UM |
97 | |
98 | #endif | |
99 | ||
100 | static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, | |
0f113f3e MC |
101 | void *data) |
102 | { | |
0f113f3e MC |
103 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
104 | "Unsupported extension."); | |
105 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION); | |
106 | return 0; | |
107 | } | |
c7235be6 UM |
108 | |
109 | /* TS_RESP_CTX management functions. */ | |
110 | ||
3cb7c5cf | 111 | TS_RESP_CTX *TS_RESP_CTX_new(void) |
0f113f3e MC |
112 | { |
113 | TS_RESP_CTX *ctx; | |
c7235be6 | 114 | |
b51bce94 | 115 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) { |
9311d0c4 | 116 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
117 | return NULL; |
118 | } | |
c7235be6 | 119 | |
e20b4727 DSH |
120 | ctx->signer_md = EVP_sha256(); |
121 | ||
0f113f3e MC |
122 | ctx->serial_cb = def_serial_cb; |
123 | ctx->time_cb = def_time_cb; | |
124 | ctx->extension_cb = def_extension_cb; | |
c7235be6 | 125 | |
0f113f3e MC |
126 | return ctx; |
127 | } | |
c7235be6 UM |
128 | |
129 | void TS_RESP_CTX_free(TS_RESP_CTX *ctx) | |
0f113f3e MC |
130 | { |
131 | if (!ctx) | |
132 | return; | |
133 | ||
134 | X509_free(ctx->signer_cert); | |
135 | EVP_PKEY_free(ctx->signer_key); | |
136 | sk_X509_pop_free(ctx->certs, X509_free); | |
137 | sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free); | |
138 | ASN1_OBJECT_free(ctx->default_policy); | |
139 | sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */ | |
140 | ASN1_INTEGER_free(ctx->seconds); | |
141 | ASN1_INTEGER_free(ctx->millis); | |
142 | ASN1_INTEGER_free(ctx->micros); | |
143 | OPENSSL_free(ctx); | |
144 | } | |
c7235be6 UM |
145 | |
146 | int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer) | |
0f113f3e MC |
147 | { |
148 | if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) { | |
9311d0c4 | 149 | ERR_raise(ERR_LIB_TS, TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE); |
0f113f3e MC |
150 | return 0; |
151 | } | |
222561fe | 152 | X509_free(ctx->signer_cert); |
0f113f3e | 153 | ctx->signer_cert = signer; |
05f0fb9f | 154 | X509_up_ref(ctx->signer_cert); |
0f113f3e MC |
155 | return 1; |
156 | } | |
c7235be6 UM |
157 | |
158 | int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key) | |
0f113f3e | 159 | { |
c5ba2d99 | 160 | EVP_PKEY_free(ctx->signer_key); |
0f113f3e | 161 | ctx->signer_key = key; |
3aeb9348 | 162 | EVP_PKEY_up_ref(ctx->signer_key); |
c7235be6 | 163 | |
0f113f3e MC |
164 | return 1; |
165 | } | |
c7235be6 | 166 | |
e20b4727 DSH |
167 | int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx, const EVP_MD *md) |
168 | { | |
169 | ctx->signer_md = md; | |
170 | return 1; | |
171 | } | |
172 | ||
c47ba4e9 | 173 | int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy) |
0f113f3e | 174 | { |
2ace7450 | 175 | ASN1_OBJECT_free(ctx->default_policy); |
75ebbd9a | 176 | if ((ctx->default_policy = OBJ_dup(def_policy)) == NULL) |
0f113f3e MC |
177 | goto err; |
178 | return 1; | |
c7235be6 | 179 | err: |
9311d0c4 | 180 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
181 | return 0; |
182 | } | |
c7235be6 UM |
183 | |
184 | int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs) | |
0f113f3e | 185 | { |
222561fe RS |
186 | sk_X509_pop_free(ctx->certs, X509_free); |
187 | ctx->certs = NULL; | |
0f113f3e | 188 | |
d53b437f | 189 | return certs == NULL || (ctx->certs = X509_chain_up_ref(certs)) != NULL; |
0f113f3e | 190 | } |
c7235be6 | 191 | |
c47ba4e9 | 192 | int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy) |
0f113f3e MC |
193 | { |
194 | ASN1_OBJECT *copy = NULL; | |
195 | ||
75ebbd9a RS |
196 | if (ctx->policies == NULL |
197 | && (ctx->policies = sk_ASN1_OBJECT_new_null()) == NULL) | |
0f113f3e | 198 | goto err; |
75ebbd9a | 199 | if ((copy = OBJ_dup(policy)) == NULL) |
0f113f3e MC |
200 | goto err; |
201 | if (!sk_ASN1_OBJECT_push(ctx->policies, copy)) | |
202 | goto err; | |
203 | ||
204 | return 1; | |
c7235be6 | 205 | err: |
9311d0c4 | 206 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
207 | ASN1_OBJECT_free(copy); |
208 | return 0; | |
209 | } | |
c7235be6 UM |
210 | |
211 | int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md) | |
0f113f3e | 212 | { |
75ebbd9a RS |
213 | if (ctx->mds == NULL |
214 | && (ctx->mds = sk_EVP_MD_new_null()) == NULL) | |
0f113f3e | 215 | goto err; |
ac94c8fd | 216 | if (!sk_EVP_MD_push(ctx->mds, md)) |
0f113f3e MC |
217 | goto err; |
218 | ||
219 | return 1; | |
c7235be6 | 220 | err: |
9311d0c4 | 221 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
222 | return 0; |
223 | } | |
224 | ||
225 | #define TS_RESP_CTX_accuracy_free(ctx) \ | |
226 | ASN1_INTEGER_free(ctx->seconds); \ | |
227 | ctx->seconds = NULL; \ | |
228 | ASN1_INTEGER_free(ctx->millis); \ | |
229 | ctx->millis = NULL; \ | |
230 | ASN1_INTEGER_free(ctx->micros); \ | |
231 | ctx->micros = NULL; | |
232 | ||
233 | int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, | |
234 | int secs, int millis, int micros) | |
235 | { | |
236 | ||
237 | TS_RESP_CTX_accuracy_free(ctx); | |
75ebbd9a RS |
238 | if (secs |
239 | && ((ctx->seconds = ASN1_INTEGER_new()) == NULL | |
240 | || !ASN1_INTEGER_set(ctx->seconds, secs))) | |
0f113f3e | 241 | goto err; |
75ebbd9a RS |
242 | if (millis |
243 | && ((ctx->millis = ASN1_INTEGER_new()) == NULL | |
244 | || !ASN1_INTEGER_set(ctx->millis, millis))) | |
0f113f3e | 245 | goto err; |
75ebbd9a RS |
246 | if (micros |
247 | && ((ctx->micros = ASN1_INTEGER_new()) == NULL | |
248 | || !ASN1_INTEGER_set(ctx->micros, micros))) | |
0f113f3e MC |
249 | goto err; |
250 | ||
251 | return 1; | |
c7235be6 | 252 | err: |
0f113f3e | 253 | TS_RESP_CTX_accuracy_free(ctx); |
9311d0c4 | 254 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
255 | return 0; |
256 | } | |
c7235be6 UM |
257 | |
258 | void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags) | |
0f113f3e MC |
259 | { |
260 | ctx->flags |= flags; | |
261 | } | |
c7235be6 UM |
262 | |
263 | void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data) | |
0f113f3e MC |
264 | { |
265 | ctx->serial_cb = cb; | |
266 | ctx->serial_cb_data = data; | |
267 | } | |
c7235be6 UM |
268 | |
269 | void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data) | |
0f113f3e MC |
270 | { |
271 | ctx->time_cb = cb; | |
272 | ctx->time_cb_data = data; | |
273 | } | |
274 | ||
275 | void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, | |
276 | TS_extension_cb cb, void *data) | |
277 | { | |
278 | ctx->extension_cb = cb; | |
279 | ctx->extension_cb_data = data; | |
280 | } | |
281 | ||
282 | int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, | |
283 | int status, const char *text) | |
284 | { | |
285 | TS_STATUS_INFO *si = NULL; | |
286 | ASN1_UTF8STRING *utf8_text = NULL; | |
287 | int ret = 0; | |
288 | ||
75ebbd9a | 289 | if ((si = TS_STATUS_INFO_new()) == NULL) |
0f113f3e MC |
290 | goto err; |
291 | if (!ASN1_INTEGER_set(si->status, status)) | |
292 | goto err; | |
293 | if (text) { | |
75ebbd9a | 294 | if ((utf8_text = ASN1_UTF8STRING_new()) == NULL |
0f113f3e MC |
295 | || !ASN1_STRING_set(utf8_text, text, strlen(text))) |
296 | goto err; | |
75ebbd9a RS |
297 | if (si->text == NULL |
298 | && (si->text = sk_ASN1_UTF8STRING_new_null()) == NULL) | |
0f113f3e MC |
299 | goto err; |
300 | if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text)) | |
301 | goto err; | |
302 | utf8_text = NULL; /* Ownership is lost. */ | |
303 | } | |
304 | if (!TS_RESP_set_status_info(ctx->response, si)) | |
305 | goto err; | |
306 | ret = 1; | |
c7235be6 | 307 | err: |
0f113f3e | 308 | if (!ret) |
9311d0c4 | 309 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
310 | TS_STATUS_INFO_free(si); |
311 | ASN1_UTF8STRING_free(utf8_text); | |
312 | return ret; | |
313 | } | |
314 | ||
315 | int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, | |
316 | int status, const char *text) | |
317 | { | |
318 | int ret = 1; | |
ca4a494c | 319 | TS_STATUS_INFO *si = ctx->response->status_info; |
0f113f3e MC |
320 | |
321 | if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) { | |
0f113f3e MC |
322 | ret = TS_RESP_CTX_set_status_info(ctx, status, text); |
323 | } | |
324 | return ret; | |
325 | } | |
c7235be6 UM |
326 | |
327 | int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure) | |
0f113f3e | 328 | { |
ca4a494c | 329 | TS_STATUS_INFO *si = ctx->response->status_info; |
75ebbd9a RS |
330 | if (si->failure_info == NULL |
331 | && (si->failure_info = ASN1_BIT_STRING_new()) == NULL) | |
0f113f3e MC |
332 | goto err; |
333 | if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1)) | |
334 | goto err; | |
335 | return 1; | |
c7235be6 | 336 | err: |
9311d0c4 | 337 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
338 | return 0; |
339 | } | |
c7235be6 UM |
340 | |
341 | TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx) | |
0f113f3e MC |
342 | { |
343 | return ctx->request; | |
344 | } | |
c7235be6 UM |
345 | |
346 | TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx) | |
0f113f3e MC |
347 | { |
348 | return ctx->tst_info; | |
349 | } | |
350 | ||
351 | int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, | |
352 | unsigned precision) | |
353 | { | |
354 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
355 | return 0; | |
356 | ctx->clock_precision_digits = precision; | |
357 | return 1; | |
358 | } | |
c7235be6 UM |
359 | |
360 | /* Main entry method of the response generation. */ | |
361 | TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio) | |
0f113f3e MC |
362 | { |
363 | ASN1_OBJECT *policy; | |
364 | TS_RESP *response; | |
365 | int result = 0; | |
366 | ||
9c422b5b | 367 | ts_RESP_CTX_init(ctx); |
0f113f3e | 368 | |
75ebbd9a | 369 | if ((ctx->response = TS_RESP_new()) == NULL) { |
9311d0c4 | 370 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
371 | goto end; |
372 | } | |
75ebbd9a | 373 | if ((ctx->request = d2i_TS_REQ_bio(req_bio, NULL)) == NULL) { |
0f113f3e | 374 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
18cd23df | 375 | "Bad request format or system error."); |
0f113f3e MC |
376 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); |
377 | goto end; | |
378 | } | |
0f113f3e MC |
379 | if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL)) |
380 | goto end; | |
9c422b5b | 381 | if (!ts_RESP_check_request(ctx)) |
0f113f3e | 382 | goto end; |
9c422b5b | 383 | if ((policy = ts_RESP_get_policy(ctx)) == NULL) |
0f113f3e | 384 | goto end; |
9c422b5b | 385 | if ((ctx->tst_info = ts_RESP_create_tst_info(ctx, policy)) == NULL) |
0f113f3e | 386 | goto end; |
9c422b5b | 387 | if (!ts_RESP_process_extensions(ctx)) |
0f113f3e | 388 | goto end; |
9c422b5b | 389 | if (!ts_RESP_sign(ctx)) |
0f113f3e | 390 | goto end; |
0f113f3e | 391 | result = 1; |
18cd23df | 392 | |
c7235be6 | 393 | end: |
0f113f3e | 394 | if (!result) { |
9311d0c4 | 395 | ERR_raise(ERR_LIB_TS, TS_R_RESPONSE_SETUP_ERROR); |
0f113f3e MC |
396 | if (ctx->response != NULL) { |
397 | if (TS_RESP_CTX_set_status_info_cond(ctx, | |
398 | TS_STATUS_REJECTION, | |
399 | "Error during response " | |
400 | "generation.") == 0) { | |
401 | TS_RESP_free(ctx->response); | |
402 | ctx->response = NULL; | |
403 | } | |
404 | } | |
405 | } | |
406 | response = ctx->response; | |
407 | ctx->response = NULL; /* Ownership will be returned to caller. */ | |
9c422b5b | 408 | ts_RESP_CTX_cleanup(ctx); |
0f113f3e MC |
409 | return response; |
410 | } | |
c7235be6 UM |
411 | |
412 | /* Initializes the variable part of the context. */ | |
9c422b5b | 413 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx) |
0f113f3e MC |
414 | { |
415 | ctx->request = NULL; | |
416 | ctx->response = NULL; | |
417 | ctx->tst_info = NULL; | |
418 | } | |
c7235be6 UM |
419 | |
420 | /* Cleans up the variable part of the context. */ | |
9c422b5b | 421 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx) |
0f113f3e MC |
422 | { |
423 | TS_REQ_free(ctx->request); | |
424 | ctx->request = NULL; | |
425 | TS_RESP_free(ctx->response); | |
426 | ctx->response = NULL; | |
427 | TS_TST_INFO_free(ctx->tst_info); | |
428 | ctx->tst_info = NULL; | |
429 | } | |
c7235be6 UM |
430 | |
431 | /* Checks the format and content of the request. */ | |
9c422b5b | 432 | static int ts_RESP_check_request(TS_RESP_CTX *ctx) |
0f113f3e MC |
433 | { |
434 | TS_REQ *request = ctx->request; | |
435 | TS_MSG_IMPRINT *msg_imprint; | |
436 | X509_ALGOR *md_alg; | |
437 | int md_alg_id; | |
438 | const ASN1_OCTET_STRING *digest; | |
ac94c8fd | 439 | const EVP_MD *md = NULL; |
0f113f3e MC |
440 | int i; |
441 | ||
0f113f3e MC |
442 | if (TS_REQ_get_version(request) != 1) { |
443 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
444 | "Bad request version."); | |
445 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST); | |
446 | return 0; | |
447 | } | |
448 | ||
ca4a494c RS |
449 | msg_imprint = request->msg_imprint; |
450 | md_alg = msg_imprint->hash_algo; | |
0f113f3e MC |
451 | md_alg_id = OBJ_obj2nid(md_alg->algorithm); |
452 | for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) { | |
ac94c8fd | 453 | const EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i); |
0f113f3e MC |
454 | if (md_alg_id == EVP_MD_type(current_md)) |
455 | md = current_md; | |
456 | } | |
457 | if (!md) { | |
458 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
459 | "Message digest algorithm is " | |
460 | "not supported."); | |
461 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
462 | return 0; | |
463 | } | |
464 | ||
0f113f3e MC |
465 | if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) { |
466 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
467 | "Superfluous message digest " | |
468 | "parameter."); | |
469 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
470 | return 0; | |
471 | } | |
ca4a494c | 472 | digest = msg_imprint->hashed_msg; |
0f113f3e MC |
473 | if (digest->length != EVP_MD_size(md)) { |
474 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
475 | "Bad message digest."); | |
476 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); | |
477 | return 0; | |
478 | } | |
479 | ||
480 | return 1; | |
481 | } | |
c7235be6 | 482 | |
b4e88ccb | 483 | /* Returns the TSA policy based on the requested and acceptable policies. */ |
9c422b5b | 484 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx) |
0f113f3e | 485 | { |
ca4a494c | 486 | ASN1_OBJECT *requested = ctx->request->policy_id; |
0f113f3e MC |
487 | ASN1_OBJECT *policy = NULL; |
488 | int i; | |
489 | ||
490 | if (ctx->default_policy == NULL) { | |
9311d0c4 | 491 | ERR_raise(ERR_LIB_TS, TS_R_INVALID_NULL_POINTER); |
0f113f3e MC |
492 | return NULL; |
493 | } | |
0f113f3e MC |
494 | if (!requested || !OBJ_cmp(requested, ctx->default_policy)) |
495 | policy = ctx->default_policy; | |
496 | ||
497 | /* Check if the policy is acceptable. */ | |
498 | for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) { | |
499 | ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i); | |
500 | if (!OBJ_cmp(requested, current)) | |
501 | policy = current; | |
502 | } | |
12a765a5 | 503 | if (policy == NULL) { |
9311d0c4 | 504 | ERR_raise(ERR_LIB_TS, TS_R_UNACCEPTABLE_POLICY); |
0f113f3e MC |
505 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
506 | "Requested policy is not " "supported."); | |
507 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY); | |
508 | } | |
509 | return policy; | |
510 | } | |
c7235be6 UM |
511 | |
512 | /* Creates the TS_TST_INFO object based on the settings of the context. */ | |
9c422b5b | 513 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, |
0f113f3e MC |
514 | ASN1_OBJECT *policy) |
515 | { | |
516 | int result = 0; | |
517 | TS_TST_INFO *tst_info = NULL; | |
518 | ASN1_INTEGER *serial = NULL; | |
519 | ASN1_GENERALIZEDTIME *asn1_time = NULL; | |
520 | long sec, usec; | |
521 | TS_ACCURACY *accuracy = NULL; | |
522 | const ASN1_INTEGER *nonce; | |
523 | GENERAL_NAME *tsa_name = NULL; | |
524 | ||
75ebbd9a | 525 | if ((tst_info = TS_TST_INFO_new()) == NULL) |
0f113f3e MC |
526 | goto end; |
527 | if (!TS_TST_INFO_set_version(tst_info, 1)) | |
528 | goto end; | |
529 | if (!TS_TST_INFO_set_policy_id(tst_info, policy)) | |
530 | goto end; | |
531 | if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint)) | |
532 | goto end; | |
75ebbd9a | 533 | if ((serial = ctx->serial_cb(ctx, ctx->serial_cb_data)) == NULL |
0f113f3e MC |
534 | || !TS_TST_INFO_set_serial(tst_info, serial)) |
535 | goto end; | |
75ebbd9a RS |
536 | if (!ctx->time_cb(ctx, ctx->time_cb_data, &sec, &usec) |
537 | || (asn1_time = | |
538 | TS_RESP_set_genTime_with_precision(NULL, sec, usec, | |
539 | ctx->clock_precision_digits)) == NULL | |
0f113f3e MC |
540 | || !TS_TST_INFO_set_time(tst_info, asn1_time)) |
541 | goto end; | |
542 | ||
0f113f3e | 543 | if ((ctx->seconds || ctx->millis || ctx->micros) |
75ebbd9a | 544 | && (accuracy = TS_ACCURACY_new()) == NULL) |
0f113f3e | 545 | goto end; |
0f113f3e MC |
546 | if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds)) |
547 | goto end; | |
548 | if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis)) | |
549 | goto end; | |
550 | if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros)) | |
551 | goto end; | |
552 | if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy)) | |
553 | goto end; | |
554 | ||
0f113f3e MC |
555 | if ((ctx->flags & TS_ORDERING) |
556 | && !TS_TST_INFO_set_ordering(tst_info, 1)) | |
557 | goto end; | |
558 | ||
ca4a494c | 559 | if ((nonce = ctx->request->nonce) != NULL |
0f113f3e MC |
560 | && !TS_TST_INFO_set_nonce(tst_info, nonce)) |
561 | goto end; | |
562 | ||
0f113f3e | 563 | if (ctx->flags & TS_TSA_NAME) { |
75ebbd9a | 564 | if ((tsa_name = GENERAL_NAME_new()) == NULL) |
0f113f3e MC |
565 | goto end; |
566 | tsa_name->type = GEN_DIRNAME; | |
567 | tsa_name->d.dirn = | |
a8d8e06b | 568 | X509_NAME_dup(X509_get_subject_name(ctx->signer_cert)); |
0f113f3e MC |
569 | if (!tsa_name->d.dirn) |
570 | goto end; | |
571 | if (!TS_TST_INFO_set_tsa(tst_info, tsa_name)) | |
572 | goto end; | |
573 | } | |
574 | ||
575 | result = 1; | |
c7235be6 | 576 | end: |
0f113f3e MC |
577 | if (!result) { |
578 | TS_TST_INFO_free(tst_info); | |
579 | tst_info = NULL; | |
9311d0c4 | 580 | ERR_raise(ERR_LIB_TS, TS_R_TST_INFO_SETUP_ERROR); |
0f113f3e MC |
581 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, |
582 | "Error during TSTInfo " | |
583 | "generation."); | |
584 | } | |
585 | GENERAL_NAME_free(tsa_name); | |
586 | TS_ACCURACY_free(accuracy); | |
587 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
588 | ASN1_INTEGER_free(serial); | |
589 | ||
590 | return tst_info; | |
591 | } | |
c7235be6 UM |
592 | |
593 | /* Processing the extensions of the request. */ | |
9c422b5b | 594 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx) |
0f113f3e | 595 | { |
ca4a494c | 596 | STACK_OF(X509_EXTENSION) *exts = ctx->request->extensions; |
0f113f3e MC |
597 | int i; |
598 | int ok = 1; | |
599 | ||
600 | for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) { | |
601 | X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); | |
602 | /* | |
18cd23df | 603 | * The last argument was previously (void *)ctx->extension_cb, |
0f113f3e MC |
604 | * but ISO C doesn't permit converting a function pointer to void *. |
605 | * For lack of better information, I'm placing a NULL there instead. | |
606 | * The callback can pick its own address out from the ctx anyway... | |
607 | */ | |
608 | ok = (*ctx->extension_cb) (ctx, ext, NULL); | |
609 | } | |
610 | ||
611 | return ok; | |
612 | } | |
c7235be6 UM |
613 | |
614 | /* Functions for signing the TS_TST_INFO structure of the context. */ | |
9c422b5b | 615 | static int ts_RESP_sign(TS_RESP_CTX *ctx) |
0f113f3e MC |
616 | { |
617 | int ret = 0; | |
618 | PKCS7 *p7 = NULL; | |
619 | PKCS7_SIGNER_INFO *si; | |
620 | STACK_OF(X509) *certs; /* Certificates to include in sc. */ | |
f0ef20bf | 621 | ESS_SIGNING_CERT_V2 *sc2 = NULL; |
0f113f3e MC |
622 | ESS_SIGNING_CERT *sc = NULL; |
623 | ASN1_OBJECT *oid; | |
624 | BIO *p7bio = NULL; | |
625 | int i; | |
626 | ||
0f113f3e | 627 | if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) { |
9311d0c4 | 628 | ERR_raise(ERR_LIB_TS, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
0f113f3e MC |
629 | goto err; |
630 | } | |
631 | ||
75ebbd9a | 632 | if ((p7 = PKCS7_new()) == NULL) { |
9311d0c4 | 633 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
634 | goto err; |
635 | } | |
636 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) | |
637 | goto err; | |
0f113f3e MC |
638 | if (!ASN1_INTEGER_set(p7->d.sign->version, 3)) |
639 | goto err; | |
640 | ||
ca4a494c | 641 | if (ctx->request->cert_req) { |
0f113f3e MC |
642 | PKCS7_add_certificate(p7, ctx->signer_cert); |
643 | if (ctx->certs) { | |
644 | for (i = 0; i < sk_X509_num(ctx->certs); ++i) { | |
645 | X509 *cert = sk_X509_value(ctx->certs, i); | |
646 | PKCS7_add_certificate(p7, cert); | |
647 | } | |
648 | } | |
649 | } | |
650 | ||
75ebbd9a | 651 | if ((si = PKCS7_add_signature(p7, ctx->signer_cert, |
e20b4727 | 652 | ctx->signer_key, ctx->signer_md)) == NULL) { |
9311d0c4 | 653 | ERR_raise(ERR_LIB_TS, TS_R_PKCS7_ADD_SIGNATURE_ERROR); |
0f113f3e MC |
654 | goto err; |
655 | } | |
656 | ||
0f113f3e MC |
657 | oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); |
658 | if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, | |
659 | V_ASN1_OBJECT, oid)) { | |
9311d0c4 | 660 | ERR_raise(ERR_LIB_TS, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR); |
0f113f3e MC |
661 | goto err; |
662 | } | |
663 | ||
0f113f3e | 664 | certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL; |
d597208c RL |
665 | if (ctx->ess_cert_id_digest == NULL |
666 | || ctx->ess_cert_id_digest == EVP_sha1()) { | |
e85d19c6 | 667 | if ((sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs, 0)) == NULL) |
f0ef20bf MK |
668 | goto err; |
669 | ||
e85d19c6 | 670 | if (!ESS_SIGNING_CERT_add(si, sc)) { |
9311d0c4 | 671 | ERR_raise(ERR_LIB_TS, TS_R_ESS_ADD_SIGNING_CERT_ERROR); |
f0ef20bf MK |
672 | goto err; |
673 | } | |
674 | } else { | |
e85d19c6 AI |
675 | sc2 = ESS_SIGNING_CERT_V2_new_init(ctx->ess_cert_id_digest, |
676 | ctx->signer_cert, certs, 0); | |
f0ef20bf MK |
677 | if (sc2 == NULL) |
678 | goto err; | |
679 | ||
e85d19c6 | 680 | if (!ESS_SIGNING_CERT_V2_add(si, sc2)) { |
9311d0c4 | 681 | ERR_raise(ERR_LIB_TS, TS_R_ESS_ADD_SIGNING_CERT_V2_ERROR); |
f0ef20bf MK |
682 | goto err; |
683 | } | |
0f113f3e MC |
684 | } |
685 | ||
9c422b5b | 686 | if (!ts_TST_INFO_content_new(p7)) |
0f113f3e | 687 | goto err; |
75ebbd9a | 688 | if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) { |
9311d0c4 | 689 | ERR_raise(ERR_LIB_TS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
690 | goto err; |
691 | } | |
0f113f3e | 692 | if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) { |
9311d0c4 | 693 | ERR_raise(ERR_LIB_TS, TS_R_TS_DATASIGN); |
0f113f3e MC |
694 | goto err; |
695 | } | |
0f113f3e | 696 | if (!PKCS7_dataFinal(p7, p7bio)) { |
9311d0c4 | 697 | ERR_raise(ERR_LIB_TS, TS_R_TS_DATASIGN); |
0f113f3e MC |
698 | goto err; |
699 | } | |
0f113f3e MC |
700 | TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info); |
701 | p7 = NULL; /* Ownership is lost. */ | |
702 | ctx->tst_info = NULL; /* Ownership is lost. */ | |
703 | ||
704 | ret = 1; | |
c7235be6 | 705 | err: |
0f113f3e MC |
706 | if (!ret) |
707 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
708 | "Error during signature " | |
709 | "generation."); | |
710 | BIO_free_all(p7bio); | |
f0ef20bf | 711 | ESS_SIGNING_CERT_V2_free(sc2); |
0f113f3e MC |
712 | ESS_SIGNING_CERT_free(sc); |
713 | PKCS7_free(p7); | |
714 | return ret; | |
715 | } | |
716 | ||
9c422b5b | 717 | static int ts_TST_INFO_content_new(PKCS7 *p7) |
0f113f3e MC |
718 | { |
719 | PKCS7 *ret = NULL; | |
720 | ASN1_OCTET_STRING *octet_string = NULL; | |
721 | ||
722 | /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */ | |
75ebbd9a | 723 | if ((ret = PKCS7_new()) == NULL) |
0f113f3e | 724 | goto err; |
75ebbd9a | 725 | if ((ret->d.other = ASN1_TYPE_new()) == NULL) |
0f113f3e MC |
726 | goto err; |
727 | ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); | |
75ebbd9a | 728 | if ((octet_string = ASN1_OCTET_STRING_new()) == NULL) |
0f113f3e MC |
729 | goto err; |
730 | ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string); | |
731 | octet_string = NULL; | |
732 | ||
733 | /* Add encapsulated content to signed PKCS7 structure. */ | |
734 | if (!PKCS7_set_content(p7, ret)) | |
735 | goto err; | |
736 | ||
737 | return 1; | |
c7235be6 | 738 | err: |
0f113f3e MC |
739 | ASN1_OCTET_STRING_free(octet_string); |
740 | PKCS7_free(ret); | |
741 | return 0; | |
742 | } | |
c7235be6 | 743 | |
f0ef20bf MK |
744 | static ASN1_GENERALIZEDTIME *TS_RESP_set_genTime_with_precision( |
745 | ASN1_GENERALIZEDTIME *asn1_time, long sec, long usec, | |
746 | unsigned precision) | |
0f113f3e MC |
747 | { |
748 | time_t time_sec = (time_t)sec; | |
98c03302 | 749 | struct tm *tm = NULL, tm_result; |
0f113f3e MC |
750 | char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS]; |
751 | char *p = genTime_str; | |
752 | char *p_end = genTime_str + sizeof(genTime_str); | |
753 | ||
754 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
755 | goto err; | |
756 | ||
98c03302 | 757 | if ((tm = OPENSSL_gmtime(&time_sec, &tm_result)) == NULL) |
0f113f3e MC |
758 | goto err; |
759 | ||
760 | /* | |
761 | * Put "genTime_str" in GeneralizedTime format. We work around the | |
762 | * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST | |
763 | * NOT include fractional seconds") and OpenSSL related functions to | |
764 | * meet the rfc3161 requirement: "GeneralizedTime syntax can include | |
765 | * fraction-of-second details". | |
766 | */ | |
767 | p += BIO_snprintf(p, p_end - p, | |
768 | "%04d%02d%02d%02d%02d%02d", | |
769 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, | |
770 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
771 | if (precision > 0) { | |
0f113f3e | 772 | BIO_snprintf(p, 2 + precision, ".%06ld", usec); |
0f113f3e MC |
773 | p += strlen(p); |
774 | ||
775 | /* | |
776 | * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the | |
777 | * following restrictions for a DER-encoding, which OpenSSL | |
778 | * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't | |
779 | * support: "The encoding MUST terminate with a "Z" (which means | |
780 | * "Zulu" time). The decimal point element, if present, MUST be the | |
781 | * point option ".". The fractional-seconds elements, if present, | |
782 | * MUST omit all trailing 0's; if the elements correspond to 0, they | |
783 | * MUST be wholly omitted, and the decimal point element also MUST be | |
784 | * omitted." | |
785 | */ | |
786 | /* | |
787 | * Remove trailing zeros. The dot guarantees the exit condition of | |
788 | * this loop even if all the digits are zero. | |
789 | */ | |
790 | while (*--p == '0') | |
18cd23df | 791 | continue; |
0f113f3e MC |
792 | if (*p != '.') |
793 | ++p; | |
794 | } | |
0f113f3e MC |
795 | *p++ = 'Z'; |
796 | *p++ = '\0'; | |
797 | ||
75ebbd9a RS |
798 | if (asn1_time == NULL |
799 | && (asn1_time = ASN1_GENERALIZEDTIME_new()) == NULL) | |
0f113f3e MC |
800 | goto err; |
801 | if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) { | |
802 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
803 | goto err; | |
804 | } | |
0f113f3e | 805 | return asn1_time; |
18cd23df | 806 | |
c7235be6 | 807 | err: |
9311d0c4 | 808 | ERR_raise(ERR_LIB_TS, TS_R_COULD_NOT_SET_TIME); |
0f113f3e MC |
809 | return NULL; |
810 | } | |
f0ef20bf MK |
811 | |
812 | int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX *ctx, const EVP_MD *md) | |
813 | { | |
814 | ctx->ess_cert_id_digest = md; | |
815 | return 1; | |
816 | } |