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Commit | Line | Data |
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0f113f3e | 1 | /* |
e85d19c6 | 2 | * Copyright 2006-2019 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 | |
c7235be6 UM |
20 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *, void *); |
21 | static int def_time_cb(struct TS_resp_ctx *, void *, long *sec, long *usec); | |
22 | static int def_extension_cb(struct TS_resp_ctx *, X509_EXTENSION *, void *); | |
23 | ||
9c422b5b RS |
24 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx); |
25 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx); | |
26 | static int ts_RESP_check_request(TS_RESP_CTX *ctx); | |
27 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx); | |
28 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, | |
0f113f3e | 29 | ASN1_OBJECT *policy); |
9c422b5b RS |
30 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx); |
31 | static int ts_RESP_sign(TS_RESP_CTX *ctx); | |
c7235be6 | 32 | |
9c422b5b | 33 | static int ts_TST_INFO_content_new(PKCS7 *p7); |
c7235be6 | 34 | |
0f113f3e MC |
35 | static ASN1_GENERALIZEDTIME |
36 | *TS_RESP_set_genTime_with_precision(ASN1_GENERALIZEDTIME *, long, long, | |
37 | unsigned); | |
c7235be6 | 38 | |
18cd23df | 39 | /* Default callback for response generation. */ |
c7235be6 | 40 | static ASN1_INTEGER *def_serial_cb(struct TS_resp_ctx *ctx, void *data) |
0f113f3e MC |
41 | { |
42 | ASN1_INTEGER *serial = ASN1_INTEGER_new(); | |
18cd23df | 43 | |
90945fa3 | 44 | if (serial == NULL) |
0f113f3e MC |
45 | goto err; |
46 | if (!ASN1_INTEGER_set(serial, 1)) | |
47 | goto err; | |
48 | return serial; | |
18cd23df | 49 | |
c7235be6 | 50 | err: |
0f113f3e MC |
51 | TSerr(TS_F_DEF_SERIAL_CB, ERR_R_MALLOC_FAILURE); |
52 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
53 | "Error during serial number generation."); | |
54 | return NULL; | |
55 | } | |
c7235be6 UM |
56 | |
57 | #if defined(OPENSSL_SYS_UNIX) | |
58 | ||
0f113f3e MC |
59 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
60 | long *sec, long *usec) | |
61 | { | |
62 | struct timeval tv; | |
63 | if (gettimeofday(&tv, NULL) != 0) { | |
64 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
65 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
66 | "Time is not available."); | |
67 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
68 | return 0; | |
69 | } | |
0f113f3e MC |
70 | *sec = tv.tv_sec; |
71 | *usec = tv.tv_usec; | |
72 | ||
73 | return 1; | |
74 | } | |
c7235be6 UM |
75 | |
76 | #else | |
77 | ||
0f113f3e MC |
78 | static int def_time_cb(struct TS_resp_ctx *ctx, void *data, |
79 | long *sec, long *usec) | |
80 | { | |
81 | time_t t; | |
82 | if (time(&t) == (time_t)-1) { | |
83 | TSerr(TS_F_DEF_TIME_CB, TS_R_TIME_SYSCALL_ERROR); | |
84 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
85 | "Time is not available."); | |
86 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_TIME_NOT_AVAILABLE); | |
87 | return 0; | |
88 | } | |
0f113f3e MC |
89 | *sec = (long)t; |
90 | *usec = 0; | |
91 | ||
92 | return 1; | |
93 | } | |
c7235be6 UM |
94 | |
95 | #endif | |
96 | ||
97 | static int def_extension_cb(struct TS_resp_ctx *ctx, X509_EXTENSION *ext, | |
0f113f3e MC |
98 | void *data) |
99 | { | |
0f113f3e MC |
100 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
101 | "Unsupported extension."); | |
102 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_EXTENSION); | |
103 | return 0; | |
104 | } | |
c7235be6 UM |
105 | |
106 | /* TS_RESP_CTX management functions. */ | |
107 | ||
3cb7c5cf | 108 | TS_RESP_CTX *TS_RESP_CTX_new(void) |
0f113f3e MC |
109 | { |
110 | TS_RESP_CTX *ctx; | |
c7235be6 | 111 | |
b51bce94 | 112 | if ((ctx = OPENSSL_zalloc(sizeof(*ctx))) == NULL) { |
0f113f3e MC |
113 | TSerr(TS_F_TS_RESP_CTX_NEW, ERR_R_MALLOC_FAILURE); |
114 | return NULL; | |
115 | } | |
c7235be6 | 116 | |
e20b4727 DSH |
117 | ctx->signer_md = EVP_sha256(); |
118 | ||
0f113f3e MC |
119 | ctx->serial_cb = def_serial_cb; |
120 | ctx->time_cb = def_time_cb; | |
121 | ctx->extension_cb = def_extension_cb; | |
c7235be6 | 122 | |
0f113f3e MC |
123 | return ctx; |
124 | } | |
c7235be6 UM |
125 | |
126 | void TS_RESP_CTX_free(TS_RESP_CTX *ctx) | |
0f113f3e MC |
127 | { |
128 | if (!ctx) | |
129 | return; | |
130 | ||
131 | X509_free(ctx->signer_cert); | |
132 | EVP_PKEY_free(ctx->signer_key); | |
133 | sk_X509_pop_free(ctx->certs, X509_free); | |
134 | sk_ASN1_OBJECT_pop_free(ctx->policies, ASN1_OBJECT_free); | |
135 | ASN1_OBJECT_free(ctx->default_policy); | |
136 | sk_EVP_MD_free(ctx->mds); /* No EVP_MD_free method exists. */ | |
137 | ASN1_INTEGER_free(ctx->seconds); | |
138 | ASN1_INTEGER_free(ctx->millis); | |
139 | ASN1_INTEGER_free(ctx->micros); | |
140 | OPENSSL_free(ctx); | |
141 | } | |
c7235be6 UM |
142 | |
143 | int TS_RESP_CTX_set_signer_cert(TS_RESP_CTX *ctx, X509 *signer) | |
0f113f3e MC |
144 | { |
145 | if (X509_check_purpose(signer, X509_PURPOSE_TIMESTAMP_SIGN, 0) != 1) { | |
146 | TSerr(TS_F_TS_RESP_CTX_SET_SIGNER_CERT, | |
147 | TS_R_INVALID_SIGNER_CERTIFICATE_PURPOSE); | |
148 | return 0; | |
149 | } | |
222561fe | 150 | X509_free(ctx->signer_cert); |
0f113f3e | 151 | ctx->signer_cert = signer; |
05f0fb9f | 152 | X509_up_ref(ctx->signer_cert); |
0f113f3e MC |
153 | return 1; |
154 | } | |
c7235be6 UM |
155 | |
156 | int TS_RESP_CTX_set_signer_key(TS_RESP_CTX *ctx, EVP_PKEY *key) | |
0f113f3e | 157 | { |
c5ba2d99 | 158 | EVP_PKEY_free(ctx->signer_key); |
0f113f3e | 159 | ctx->signer_key = key; |
3aeb9348 | 160 | EVP_PKEY_up_ref(ctx->signer_key); |
c7235be6 | 161 | |
0f113f3e MC |
162 | return 1; |
163 | } | |
c7235be6 | 164 | |
e20b4727 DSH |
165 | int TS_RESP_CTX_set_signer_digest(TS_RESP_CTX *ctx, const EVP_MD *md) |
166 | { | |
167 | ctx->signer_md = md; | |
168 | return 1; | |
169 | } | |
170 | ||
c47ba4e9 | 171 | int TS_RESP_CTX_set_def_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *def_policy) |
0f113f3e | 172 | { |
2ace7450 | 173 | ASN1_OBJECT_free(ctx->default_policy); |
75ebbd9a | 174 | if ((ctx->default_policy = OBJ_dup(def_policy)) == NULL) |
0f113f3e MC |
175 | goto err; |
176 | return 1; | |
c7235be6 | 177 | err: |
0f113f3e MC |
178 | TSerr(TS_F_TS_RESP_CTX_SET_DEF_POLICY, ERR_R_MALLOC_FAILURE); |
179 | return 0; | |
180 | } | |
c7235be6 UM |
181 | |
182 | int TS_RESP_CTX_set_certs(TS_RESP_CTX *ctx, STACK_OF(X509) *certs) | |
0f113f3e MC |
183 | { |
184 | ||
222561fe RS |
185 | sk_X509_pop_free(ctx->certs, X509_free); |
186 | ctx->certs = NULL; | |
0f113f3e MC |
187 | if (!certs) |
188 | return 1; | |
75ebbd9a | 189 | if ((ctx->certs = X509_chain_up_ref(certs)) == NULL) { |
0f113f3e MC |
190 | TSerr(TS_F_TS_RESP_CTX_SET_CERTS, ERR_R_MALLOC_FAILURE); |
191 | return 0; | |
192 | } | |
193 | ||
194 | return 1; | |
195 | } | |
c7235be6 | 196 | |
c47ba4e9 | 197 | int TS_RESP_CTX_add_policy(TS_RESP_CTX *ctx, const ASN1_OBJECT *policy) |
0f113f3e MC |
198 | { |
199 | ASN1_OBJECT *copy = NULL; | |
200 | ||
75ebbd9a RS |
201 | if (ctx->policies == NULL |
202 | && (ctx->policies = sk_ASN1_OBJECT_new_null()) == NULL) | |
0f113f3e | 203 | goto err; |
75ebbd9a | 204 | if ((copy = OBJ_dup(policy)) == NULL) |
0f113f3e MC |
205 | goto err; |
206 | if (!sk_ASN1_OBJECT_push(ctx->policies, copy)) | |
207 | goto err; | |
208 | ||
209 | return 1; | |
c7235be6 | 210 | err: |
0f113f3e MC |
211 | TSerr(TS_F_TS_RESP_CTX_ADD_POLICY, ERR_R_MALLOC_FAILURE); |
212 | ASN1_OBJECT_free(copy); | |
213 | return 0; | |
214 | } | |
c7235be6 UM |
215 | |
216 | int TS_RESP_CTX_add_md(TS_RESP_CTX *ctx, const EVP_MD *md) | |
0f113f3e | 217 | { |
75ebbd9a RS |
218 | if (ctx->mds == NULL |
219 | && (ctx->mds = sk_EVP_MD_new_null()) == NULL) | |
0f113f3e | 220 | goto err; |
ac94c8fd | 221 | if (!sk_EVP_MD_push(ctx->mds, md)) |
0f113f3e MC |
222 | goto err; |
223 | ||
224 | return 1; | |
c7235be6 | 225 | err: |
0f113f3e MC |
226 | TSerr(TS_F_TS_RESP_CTX_ADD_MD, ERR_R_MALLOC_FAILURE); |
227 | return 0; | |
228 | } | |
229 | ||
230 | #define TS_RESP_CTX_accuracy_free(ctx) \ | |
231 | ASN1_INTEGER_free(ctx->seconds); \ | |
232 | ctx->seconds = NULL; \ | |
233 | ASN1_INTEGER_free(ctx->millis); \ | |
234 | ctx->millis = NULL; \ | |
235 | ASN1_INTEGER_free(ctx->micros); \ | |
236 | ctx->micros = NULL; | |
237 | ||
238 | int TS_RESP_CTX_set_accuracy(TS_RESP_CTX *ctx, | |
239 | int secs, int millis, int micros) | |
240 | { | |
241 | ||
242 | TS_RESP_CTX_accuracy_free(ctx); | |
75ebbd9a RS |
243 | if (secs |
244 | && ((ctx->seconds = ASN1_INTEGER_new()) == NULL | |
245 | || !ASN1_INTEGER_set(ctx->seconds, secs))) | |
0f113f3e | 246 | goto err; |
75ebbd9a RS |
247 | if (millis |
248 | && ((ctx->millis = ASN1_INTEGER_new()) == NULL | |
249 | || !ASN1_INTEGER_set(ctx->millis, millis))) | |
0f113f3e | 250 | goto err; |
75ebbd9a RS |
251 | if (micros |
252 | && ((ctx->micros = ASN1_INTEGER_new()) == NULL | |
253 | || !ASN1_INTEGER_set(ctx->micros, micros))) | |
0f113f3e MC |
254 | goto err; |
255 | ||
256 | return 1; | |
c7235be6 | 257 | err: |
0f113f3e MC |
258 | TS_RESP_CTX_accuracy_free(ctx); |
259 | TSerr(TS_F_TS_RESP_CTX_SET_ACCURACY, ERR_R_MALLOC_FAILURE); | |
260 | return 0; | |
261 | } | |
c7235be6 UM |
262 | |
263 | void TS_RESP_CTX_add_flags(TS_RESP_CTX *ctx, int flags) | |
0f113f3e MC |
264 | { |
265 | ctx->flags |= flags; | |
266 | } | |
c7235be6 UM |
267 | |
268 | void TS_RESP_CTX_set_serial_cb(TS_RESP_CTX *ctx, TS_serial_cb cb, void *data) | |
0f113f3e MC |
269 | { |
270 | ctx->serial_cb = cb; | |
271 | ctx->serial_cb_data = data; | |
272 | } | |
c7235be6 UM |
273 | |
274 | void TS_RESP_CTX_set_time_cb(TS_RESP_CTX *ctx, TS_time_cb cb, void *data) | |
0f113f3e MC |
275 | { |
276 | ctx->time_cb = cb; | |
277 | ctx->time_cb_data = data; | |
278 | } | |
279 | ||
280 | void TS_RESP_CTX_set_extension_cb(TS_RESP_CTX *ctx, | |
281 | TS_extension_cb cb, void *data) | |
282 | { | |
283 | ctx->extension_cb = cb; | |
284 | ctx->extension_cb_data = data; | |
285 | } | |
286 | ||
287 | int TS_RESP_CTX_set_status_info(TS_RESP_CTX *ctx, | |
288 | int status, const char *text) | |
289 | { | |
290 | TS_STATUS_INFO *si = NULL; | |
291 | ASN1_UTF8STRING *utf8_text = NULL; | |
292 | int ret = 0; | |
293 | ||
75ebbd9a | 294 | if ((si = TS_STATUS_INFO_new()) == NULL) |
0f113f3e MC |
295 | goto err; |
296 | if (!ASN1_INTEGER_set(si->status, status)) | |
297 | goto err; | |
298 | if (text) { | |
75ebbd9a | 299 | if ((utf8_text = ASN1_UTF8STRING_new()) == NULL |
0f113f3e MC |
300 | || !ASN1_STRING_set(utf8_text, text, strlen(text))) |
301 | goto err; | |
75ebbd9a RS |
302 | if (si->text == NULL |
303 | && (si->text = sk_ASN1_UTF8STRING_new_null()) == NULL) | |
0f113f3e MC |
304 | goto err; |
305 | if (!sk_ASN1_UTF8STRING_push(si->text, utf8_text)) | |
306 | goto err; | |
307 | utf8_text = NULL; /* Ownership is lost. */ | |
308 | } | |
309 | if (!TS_RESP_set_status_info(ctx->response, si)) | |
310 | goto err; | |
311 | ret = 1; | |
c7235be6 | 312 | err: |
0f113f3e MC |
313 | if (!ret) |
314 | TSerr(TS_F_TS_RESP_CTX_SET_STATUS_INFO, ERR_R_MALLOC_FAILURE); | |
315 | TS_STATUS_INFO_free(si); | |
316 | ASN1_UTF8STRING_free(utf8_text); | |
317 | return ret; | |
318 | } | |
319 | ||
320 | int TS_RESP_CTX_set_status_info_cond(TS_RESP_CTX *ctx, | |
321 | int status, const char *text) | |
322 | { | |
323 | int ret = 1; | |
ca4a494c | 324 | TS_STATUS_INFO *si = ctx->response->status_info; |
0f113f3e MC |
325 | |
326 | if (ASN1_INTEGER_get(si->status) == TS_STATUS_GRANTED) { | |
0f113f3e MC |
327 | ret = TS_RESP_CTX_set_status_info(ctx, status, text); |
328 | } | |
329 | return ret; | |
330 | } | |
c7235be6 UM |
331 | |
332 | int TS_RESP_CTX_add_failure_info(TS_RESP_CTX *ctx, int failure) | |
0f113f3e | 333 | { |
ca4a494c | 334 | TS_STATUS_INFO *si = ctx->response->status_info; |
75ebbd9a RS |
335 | if (si->failure_info == NULL |
336 | && (si->failure_info = ASN1_BIT_STRING_new()) == NULL) | |
0f113f3e MC |
337 | goto err; |
338 | if (!ASN1_BIT_STRING_set_bit(si->failure_info, failure, 1)) | |
339 | goto err; | |
340 | return 1; | |
c7235be6 | 341 | err: |
0f113f3e MC |
342 | TSerr(TS_F_TS_RESP_CTX_ADD_FAILURE_INFO, ERR_R_MALLOC_FAILURE); |
343 | return 0; | |
344 | } | |
c7235be6 UM |
345 | |
346 | TS_REQ *TS_RESP_CTX_get_request(TS_RESP_CTX *ctx) | |
0f113f3e MC |
347 | { |
348 | return ctx->request; | |
349 | } | |
c7235be6 UM |
350 | |
351 | TS_TST_INFO *TS_RESP_CTX_get_tst_info(TS_RESP_CTX *ctx) | |
0f113f3e MC |
352 | { |
353 | return ctx->tst_info; | |
354 | } | |
355 | ||
356 | int TS_RESP_CTX_set_clock_precision_digits(TS_RESP_CTX *ctx, | |
357 | unsigned precision) | |
358 | { | |
359 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
360 | return 0; | |
361 | ctx->clock_precision_digits = precision; | |
362 | return 1; | |
363 | } | |
c7235be6 UM |
364 | |
365 | /* Main entry method of the response generation. */ | |
366 | TS_RESP *TS_RESP_create_response(TS_RESP_CTX *ctx, BIO *req_bio) | |
0f113f3e MC |
367 | { |
368 | ASN1_OBJECT *policy; | |
369 | TS_RESP *response; | |
370 | int result = 0; | |
371 | ||
9c422b5b | 372 | ts_RESP_CTX_init(ctx); |
0f113f3e | 373 | |
75ebbd9a | 374 | if ((ctx->response = TS_RESP_new()) == NULL) { |
0f113f3e MC |
375 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, ERR_R_MALLOC_FAILURE); |
376 | goto end; | |
377 | } | |
75ebbd9a | 378 | if ((ctx->request = d2i_TS_REQ_bio(req_bio, NULL)) == NULL) { |
0f113f3e | 379 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, |
18cd23df | 380 | "Bad request format or system error."); |
0f113f3e MC |
381 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); |
382 | goto end; | |
383 | } | |
0f113f3e MC |
384 | if (!TS_RESP_CTX_set_status_info(ctx, TS_STATUS_GRANTED, NULL)) |
385 | goto end; | |
9c422b5b | 386 | if (!ts_RESP_check_request(ctx)) |
0f113f3e | 387 | goto end; |
9c422b5b | 388 | if ((policy = ts_RESP_get_policy(ctx)) == NULL) |
0f113f3e | 389 | goto end; |
9c422b5b | 390 | if ((ctx->tst_info = ts_RESP_create_tst_info(ctx, policy)) == NULL) |
0f113f3e | 391 | goto end; |
9c422b5b | 392 | if (!ts_RESP_process_extensions(ctx)) |
0f113f3e | 393 | goto end; |
9c422b5b | 394 | if (!ts_RESP_sign(ctx)) |
0f113f3e | 395 | goto end; |
0f113f3e | 396 | result = 1; |
18cd23df | 397 | |
c7235be6 | 398 | end: |
0f113f3e MC |
399 | if (!result) { |
400 | TSerr(TS_F_TS_RESP_CREATE_RESPONSE, TS_R_RESPONSE_SETUP_ERROR); | |
401 | if (ctx->response != NULL) { | |
402 | if (TS_RESP_CTX_set_status_info_cond(ctx, | |
403 | TS_STATUS_REJECTION, | |
404 | "Error during response " | |
405 | "generation.") == 0) { | |
406 | TS_RESP_free(ctx->response); | |
407 | ctx->response = NULL; | |
408 | } | |
409 | } | |
410 | } | |
411 | response = ctx->response; | |
412 | ctx->response = NULL; /* Ownership will be returned to caller. */ | |
9c422b5b | 413 | ts_RESP_CTX_cleanup(ctx); |
0f113f3e MC |
414 | return response; |
415 | } | |
c7235be6 UM |
416 | |
417 | /* Initializes the variable part of the context. */ | |
9c422b5b | 418 | static void ts_RESP_CTX_init(TS_RESP_CTX *ctx) |
0f113f3e MC |
419 | { |
420 | ctx->request = NULL; | |
421 | ctx->response = NULL; | |
422 | ctx->tst_info = NULL; | |
423 | } | |
c7235be6 UM |
424 | |
425 | /* Cleans up the variable part of the context. */ | |
9c422b5b | 426 | static void ts_RESP_CTX_cleanup(TS_RESP_CTX *ctx) |
0f113f3e MC |
427 | { |
428 | TS_REQ_free(ctx->request); | |
429 | ctx->request = NULL; | |
430 | TS_RESP_free(ctx->response); | |
431 | ctx->response = NULL; | |
432 | TS_TST_INFO_free(ctx->tst_info); | |
433 | ctx->tst_info = NULL; | |
434 | } | |
c7235be6 UM |
435 | |
436 | /* Checks the format and content of the request. */ | |
9c422b5b | 437 | static int ts_RESP_check_request(TS_RESP_CTX *ctx) |
0f113f3e MC |
438 | { |
439 | TS_REQ *request = ctx->request; | |
440 | TS_MSG_IMPRINT *msg_imprint; | |
441 | X509_ALGOR *md_alg; | |
442 | int md_alg_id; | |
443 | const ASN1_OCTET_STRING *digest; | |
ac94c8fd | 444 | const EVP_MD *md = NULL; |
0f113f3e MC |
445 | int i; |
446 | ||
0f113f3e MC |
447 | if (TS_REQ_get_version(request) != 1) { |
448 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
449 | "Bad request version."); | |
450 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_REQUEST); | |
451 | return 0; | |
452 | } | |
453 | ||
ca4a494c RS |
454 | msg_imprint = request->msg_imprint; |
455 | md_alg = msg_imprint->hash_algo; | |
0f113f3e MC |
456 | md_alg_id = OBJ_obj2nid(md_alg->algorithm); |
457 | for (i = 0; !md && i < sk_EVP_MD_num(ctx->mds); ++i) { | |
ac94c8fd | 458 | const EVP_MD *current_md = sk_EVP_MD_value(ctx->mds, i); |
0f113f3e MC |
459 | if (md_alg_id == EVP_MD_type(current_md)) |
460 | md = current_md; | |
461 | } | |
462 | if (!md) { | |
463 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
464 | "Message digest algorithm is " | |
465 | "not supported."); | |
466 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
467 | return 0; | |
468 | } | |
469 | ||
0f113f3e MC |
470 | if (md_alg->parameter && ASN1_TYPE_get(md_alg->parameter) != V_ASN1_NULL) { |
471 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
472 | "Superfluous message digest " | |
473 | "parameter."); | |
474 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_ALG); | |
475 | return 0; | |
476 | } | |
ca4a494c | 477 | digest = msg_imprint->hashed_msg; |
0f113f3e MC |
478 | if (digest->length != EVP_MD_size(md)) { |
479 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
480 | "Bad message digest."); | |
481 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_BAD_DATA_FORMAT); | |
482 | return 0; | |
483 | } | |
484 | ||
485 | return 1; | |
486 | } | |
c7235be6 | 487 | |
b4e88ccb | 488 | /* Returns the TSA policy based on the requested and acceptable policies. */ |
9c422b5b | 489 | static ASN1_OBJECT *ts_RESP_get_policy(TS_RESP_CTX *ctx) |
0f113f3e | 490 | { |
ca4a494c | 491 | ASN1_OBJECT *requested = ctx->request->policy_id; |
0f113f3e MC |
492 | ASN1_OBJECT *policy = NULL; |
493 | int i; | |
494 | ||
495 | if (ctx->default_policy == NULL) { | |
496 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_INVALID_NULL_POINTER); | |
497 | return NULL; | |
498 | } | |
0f113f3e MC |
499 | if (!requested || !OBJ_cmp(requested, ctx->default_policy)) |
500 | policy = ctx->default_policy; | |
501 | ||
502 | /* Check if the policy is acceptable. */ | |
503 | for (i = 0; !policy && i < sk_ASN1_OBJECT_num(ctx->policies); ++i) { | |
504 | ASN1_OBJECT *current = sk_ASN1_OBJECT_value(ctx->policies, i); | |
505 | if (!OBJ_cmp(requested, current)) | |
506 | policy = current; | |
507 | } | |
508 | if (!policy) { | |
509 | TSerr(TS_F_TS_RESP_GET_POLICY, TS_R_UNACCEPTABLE_POLICY); | |
510 | TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION, | |
511 | "Requested policy is not " "supported."); | |
512 | TS_RESP_CTX_add_failure_info(ctx, TS_INFO_UNACCEPTED_POLICY); | |
513 | } | |
514 | return policy; | |
515 | } | |
c7235be6 UM |
516 | |
517 | /* Creates the TS_TST_INFO object based on the settings of the context. */ | |
9c422b5b | 518 | static TS_TST_INFO *ts_RESP_create_tst_info(TS_RESP_CTX *ctx, |
0f113f3e MC |
519 | ASN1_OBJECT *policy) |
520 | { | |
521 | int result = 0; | |
522 | TS_TST_INFO *tst_info = NULL; | |
523 | ASN1_INTEGER *serial = NULL; | |
524 | ASN1_GENERALIZEDTIME *asn1_time = NULL; | |
525 | long sec, usec; | |
526 | TS_ACCURACY *accuracy = NULL; | |
527 | const ASN1_INTEGER *nonce; | |
528 | GENERAL_NAME *tsa_name = NULL; | |
529 | ||
75ebbd9a | 530 | if ((tst_info = TS_TST_INFO_new()) == NULL) |
0f113f3e MC |
531 | goto end; |
532 | if (!TS_TST_INFO_set_version(tst_info, 1)) | |
533 | goto end; | |
534 | if (!TS_TST_INFO_set_policy_id(tst_info, policy)) | |
535 | goto end; | |
536 | if (!TS_TST_INFO_set_msg_imprint(tst_info, ctx->request->msg_imprint)) | |
537 | goto end; | |
75ebbd9a | 538 | if ((serial = ctx->serial_cb(ctx, ctx->serial_cb_data)) == NULL |
0f113f3e MC |
539 | || !TS_TST_INFO_set_serial(tst_info, serial)) |
540 | goto end; | |
75ebbd9a RS |
541 | if (!ctx->time_cb(ctx, ctx->time_cb_data, &sec, &usec) |
542 | || (asn1_time = | |
543 | TS_RESP_set_genTime_with_precision(NULL, sec, usec, | |
544 | ctx->clock_precision_digits)) == NULL | |
0f113f3e MC |
545 | || !TS_TST_INFO_set_time(tst_info, asn1_time)) |
546 | goto end; | |
547 | ||
0f113f3e | 548 | if ((ctx->seconds || ctx->millis || ctx->micros) |
75ebbd9a | 549 | && (accuracy = TS_ACCURACY_new()) == NULL) |
0f113f3e | 550 | goto end; |
0f113f3e MC |
551 | if (ctx->seconds && !TS_ACCURACY_set_seconds(accuracy, ctx->seconds)) |
552 | goto end; | |
553 | if (ctx->millis && !TS_ACCURACY_set_millis(accuracy, ctx->millis)) | |
554 | goto end; | |
555 | if (ctx->micros && !TS_ACCURACY_set_micros(accuracy, ctx->micros)) | |
556 | goto end; | |
557 | if (accuracy && !TS_TST_INFO_set_accuracy(tst_info, accuracy)) | |
558 | goto end; | |
559 | ||
0f113f3e MC |
560 | if ((ctx->flags & TS_ORDERING) |
561 | && !TS_TST_INFO_set_ordering(tst_info, 1)) | |
562 | goto end; | |
563 | ||
ca4a494c | 564 | if ((nonce = ctx->request->nonce) != NULL |
0f113f3e MC |
565 | && !TS_TST_INFO_set_nonce(tst_info, nonce)) |
566 | goto end; | |
567 | ||
0f113f3e | 568 | if (ctx->flags & TS_TSA_NAME) { |
75ebbd9a | 569 | if ((tsa_name = GENERAL_NAME_new()) == NULL) |
0f113f3e MC |
570 | goto end; |
571 | tsa_name->type = GEN_DIRNAME; | |
572 | tsa_name->d.dirn = | |
a8d8e06b | 573 | X509_NAME_dup(X509_get_subject_name(ctx->signer_cert)); |
0f113f3e MC |
574 | if (!tsa_name->d.dirn) |
575 | goto end; | |
576 | if (!TS_TST_INFO_set_tsa(tst_info, tsa_name)) | |
577 | goto end; | |
578 | } | |
579 | ||
580 | result = 1; | |
c7235be6 | 581 | end: |
0f113f3e MC |
582 | if (!result) { |
583 | TS_TST_INFO_free(tst_info); | |
584 | tst_info = NULL; | |
585 | TSerr(TS_F_TS_RESP_CREATE_TST_INFO, TS_R_TST_INFO_SETUP_ERROR); | |
586 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
587 | "Error during TSTInfo " | |
588 | "generation."); | |
589 | } | |
590 | GENERAL_NAME_free(tsa_name); | |
591 | TS_ACCURACY_free(accuracy); | |
592 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
593 | ASN1_INTEGER_free(serial); | |
594 | ||
595 | return tst_info; | |
596 | } | |
c7235be6 UM |
597 | |
598 | /* Processing the extensions of the request. */ | |
9c422b5b | 599 | static int ts_RESP_process_extensions(TS_RESP_CTX *ctx) |
0f113f3e | 600 | { |
ca4a494c | 601 | STACK_OF(X509_EXTENSION) *exts = ctx->request->extensions; |
0f113f3e MC |
602 | int i; |
603 | int ok = 1; | |
604 | ||
605 | for (i = 0; ok && i < sk_X509_EXTENSION_num(exts); ++i) { | |
606 | X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i); | |
607 | /* | |
18cd23df | 608 | * The last argument was previously (void *)ctx->extension_cb, |
0f113f3e MC |
609 | * but ISO C doesn't permit converting a function pointer to void *. |
610 | * For lack of better information, I'm placing a NULL there instead. | |
611 | * The callback can pick its own address out from the ctx anyway... | |
612 | */ | |
613 | ok = (*ctx->extension_cb) (ctx, ext, NULL); | |
614 | } | |
615 | ||
616 | return ok; | |
617 | } | |
c7235be6 UM |
618 | |
619 | /* Functions for signing the TS_TST_INFO structure of the context. */ | |
9c422b5b | 620 | static int ts_RESP_sign(TS_RESP_CTX *ctx) |
0f113f3e MC |
621 | { |
622 | int ret = 0; | |
623 | PKCS7 *p7 = NULL; | |
624 | PKCS7_SIGNER_INFO *si; | |
625 | STACK_OF(X509) *certs; /* Certificates to include in sc. */ | |
f0ef20bf | 626 | ESS_SIGNING_CERT_V2 *sc2 = NULL; |
0f113f3e MC |
627 | ESS_SIGNING_CERT *sc = NULL; |
628 | ASN1_OBJECT *oid; | |
629 | BIO *p7bio = NULL; | |
630 | int i; | |
631 | ||
0f113f3e MC |
632 | if (!X509_check_private_key(ctx->signer_cert, ctx->signer_key)) { |
633 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
634 | goto err; | |
635 | } | |
636 | ||
75ebbd9a | 637 | if ((p7 = PKCS7_new()) == NULL) { |
0f113f3e MC |
638 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); |
639 | goto err; | |
640 | } | |
641 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) | |
642 | goto err; | |
0f113f3e MC |
643 | if (!ASN1_INTEGER_set(p7->d.sign->version, 3)) |
644 | goto err; | |
645 | ||
ca4a494c | 646 | if (ctx->request->cert_req) { |
0f113f3e MC |
647 | PKCS7_add_certificate(p7, ctx->signer_cert); |
648 | if (ctx->certs) { | |
649 | for (i = 0; i < sk_X509_num(ctx->certs); ++i) { | |
650 | X509 *cert = sk_X509_value(ctx->certs, i); | |
651 | PKCS7_add_certificate(p7, cert); | |
652 | } | |
653 | } | |
654 | } | |
655 | ||
75ebbd9a | 656 | if ((si = PKCS7_add_signature(p7, ctx->signer_cert, |
e20b4727 | 657 | ctx->signer_key, ctx->signer_md)) == NULL) { |
0f113f3e MC |
658 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNATURE_ERROR); |
659 | goto err; | |
660 | } | |
661 | ||
0f113f3e MC |
662 | oid = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); |
663 | if (!PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, | |
664 | V_ASN1_OBJECT, oid)) { | |
665 | TSerr(TS_F_TS_RESP_SIGN, TS_R_PKCS7_ADD_SIGNED_ATTR_ERROR); | |
666 | goto err; | |
667 | } | |
668 | ||
0f113f3e | 669 | certs = ctx->flags & TS_ESS_CERT_ID_CHAIN ? ctx->certs : NULL; |
d597208c RL |
670 | if (ctx->ess_cert_id_digest == NULL |
671 | || ctx->ess_cert_id_digest == EVP_sha1()) { | |
e85d19c6 | 672 | if ((sc = ESS_SIGNING_CERT_new_init(ctx->signer_cert, certs, 0)) == NULL) |
f0ef20bf MK |
673 | goto err; |
674 | ||
e85d19c6 | 675 | if (!ESS_SIGNING_CERT_add(si, sc)) { |
f0ef20bf MK |
676 | TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_ERROR); |
677 | goto err; | |
678 | } | |
679 | } else { | |
e85d19c6 AI |
680 | sc2 = ESS_SIGNING_CERT_V2_new_init(ctx->ess_cert_id_digest, |
681 | ctx->signer_cert, certs, 0); | |
f0ef20bf MK |
682 | if (sc2 == NULL) |
683 | goto err; | |
684 | ||
e85d19c6 | 685 | if (!ESS_SIGNING_CERT_V2_add(si, sc2)) { |
f0ef20bf MK |
686 | TSerr(TS_F_TS_RESP_SIGN, TS_R_ESS_ADD_SIGNING_CERT_V2_ERROR); |
687 | goto err; | |
688 | } | |
0f113f3e MC |
689 | } |
690 | ||
9c422b5b | 691 | if (!ts_TST_INFO_content_new(p7)) |
0f113f3e | 692 | goto err; |
75ebbd9a | 693 | if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) { |
0f113f3e MC |
694 | TSerr(TS_F_TS_RESP_SIGN, ERR_R_MALLOC_FAILURE); |
695 | goto err; | |
696 | } | |
0f113f3e MC |
697 | if (!i2d_TS_TST_INFO_bio(p7bio, ctx->tst_info)) { |
698 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
699 | goto err; | |
700 | } | |
0f113f3e MC |
701 | if (!PKCS7_dataFinal(p7, p7bio)) { |
702 | TSerr(TS_F_TS_RESP_SIGN, TS_R_TS_DATASIGN); | |
703 | goto err; | |
704 | } | |
0f113f3e MC |
705 | TS_RESP_set_tst_info(ctx->response, p7, ctx->tst_info); |
706 | p7 = NULL; /* Ownership is lost. */ | |
707 | ctx->tst_info = NULL; /* Ownership is lost. */ | |
708 | ||
709 | ret = 1; | |
c7235be6 | 710 | err: |
0f113f3e MC |
711 | if (!ret) |
712 | TS_RESP_CTX_set_status_info_cond(ctx, TS_STATUS_REJECTION, | |
713 | "Error during signature " | |
714 | "generation."); | |
715 | BIO_free_all(p7bio); | |
f0ef20bf | 716 | ESS_SIGNING_CERT_V2_free(sc2); |
0f113f3e MC |
717 | ESS_SIGNING_CERT_free(sc); |
718 | PKCS7_free(p7); | |
719 | return ret; | |
720 | } | |
721 | ||
9c422b5b | 722 | static int ts_TST_INFO_content_new(PKCS7 *p7) |
0f113f3e MC |
723 | { |
724 | PKCS7 *ret = NULL; | |
725 | ASN1_OCTET_STRING *octet_string = NULL; | |
726 | ||
727 | /* Create new encapsulated NID_id_smime_ct_TSTInfo content. */ | |
75ebbd9a | 728 | if ((ret = PKCS7_new()) == NULL) |
0f113f3e | 729 | goto err; |
75ebbd9a | 730 | if ((ret->d.other = ASN1_TYPE_new()) == NULL) |
0f113f3e MC |
731 | goto err; |
732 | ret->type = OBJ_nid2obj(NID_id_smime_ct_TSTInfo); | |
75ebbd9a | 733 | if ((octet_string = ASN1_OCTET_STRING_new()) == NULL) |
0f113f3e MC |
734 | goto err; |
735 | ASN1_TYPE_set(ret->d.other, V_ASN1_OCTET_STRING, octet_string); | |
736 | octet_string = NULL; | |
737 | ||
738 | /* Add encapsulated content to signed PKCS7 structure. */ | |
739 | if (!PKCS7_set_content(p7, ret)) | |
740 | goto err; | |
741 | ||
742 | return 1; | |
c7235be6 | 743 | err: |
0f113f3e MC |
744 | ASN1_OCTET_STRING_free(octet_string); |
745 | PKCS7_free(ret); | |
746 | return 0; | |
747 | } | |
c7235be6 | 748 | |
f0ef20bf MK |
749 | static ASN1_GENERALIZEDTIME *TS_RESP_set_genTime_with_precision( |
750 | ASN1_GENERALIZEDTIME *asn1_time, long sec, long usec, | |
751 | unsigned precision) | |
0f113f3e MC |
752 | { |
753 | time_t time_sec = (time_t)sec; | |
98c03302 | 754 | struct tm *tm = NULL, tm_result; |
0f113f3e MC |
755 | char genTime_str[17 + TS_MAX_CLOCK_PRECISION_DIGITS]; |
756 | char *p = genTime_str; | |
757 | char *p_end = genTime_str + sizeof(genTime_str); | |
758 | ||
759 | if (precision > TS_MAX_CLOCK_PRECISION_DIGITS) | |
760 | goto err; | |
761 | ||
98c03302 | 762 | if ((tm = OPENSSL_gmtime(&time_sec, &tm_result)) == NULL) |
0f113f3e MC |
763 | goto err; |
764 | ||
765 | /* | |
766 | * Put "genTime_str" in GeneralizedTime format. We work around the | |
767 | * restrictions imposed by rfc3280 (i.e. "GeneralizedTime values MUST | |
768 | * NOT include fractional seconds") and OpenSSL related functions to | |
769 | * meet the rfc3161 requirement: "GeneralizedTime syntax can include | |
770 | * fraction-of-second details". | |
771 | */ | |
772 | p += BIO_snprintf(p, p_end - p, | |
773 | "%04d%02d%02d%02d%02d%02d", | |
774 | tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, | |
775 | tm->tm_hour, tm->tm_min, tm->tm_sec); | |
776 | if (precision > 0) { | |
0f113f3e | 777 | BIO_snprintf(p, 2 + precision, ".%06ld", usec); |
0f113f3e MC |
778 | p += strlen(p); |
779 | ||
780 | /* | |
781 | * To make things a bit harder, X.690 | ISO/IEC 8825-1 provides the | |
782 | * following restrictions for a DER-encoding, which OpenSSL | |
783 | * (specifically ASN1_GENERALIZEDTIME_check() function) doesn't | |
784 | * support: "The encoding MUST terminate with a "Z" (which means | |
785 | * "Zulu" time). The decimal point element, if present, MUST be the | |
786 | * point option ".". The fractional-seconds elements, if present, | |
787 | * MUST omit all trailing 0's; if the elements correspond to 0, they | |
788 | * MUST be wholly omitted, and the decimal point element also MUST be | |
789 | * omitted." | |
790 | */ | |
791 | /* | |
792 | * Remove trailing zeros. The dot guarantees the exit condition of | |
793 | * this loop even if all the digits are zero. | |
794 | */ | |
795 | while (*--p == '0') | |
18cd23df | 796 | continue; |
0f113f3e MC |
797 | if (*p != '.') |
798 | ++p; | |
799 | } | |
0f113f3e MC |
800 | *p++ = 'Z'; |
801 | *p++ = '\0'; | |
802 | ||
75ebbd9a RS |
803 | if (asn1_time == NULL |
804 | && (asn1_time = ASN1_GENERALIZEDTIME_new()) == NULL) | |
0f113f3e MC |
805 | goto err; |
806 | if (!ASN1_GENERALIZEDTIME_set_string(asn1_time, genTime_str)) { | |
807 | ASN1_GENERALIZEDTIME_free(asn1_time); | |
808 | goto err; | |
809 | } | |
0f113f3e | 810 | return asn1_time; |
18cd23df | 811 | |
c7235be6 | 812 | err: |
0f113f3e MC |
813 | TSerr(TS_F_TS_RESP_SET_GENTIME_WITH_PRECISION, TS_R_COULD_NOT_SET_TIME); |
814 | return NULL; | |
815 | } | |
f0ef20bf MK |
816 | |
817 | int TS_RESP_CTX_set_ess_cert_id_digest(TS_RESP_CTX *ctx, const EVP_MD *md) | |
818 | { | |
819 | ctx->ess_cert_id_digest = md; | |
820 | return 1; | |
821 | } |