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7e765f46 | 1 | /* |
33388b44 | 2 | * Copyright 2007-2020 The OpenSSL Project Authors. All Rights Reserved. |
7e765f46 DDO |
3 | * Copyright Nokia 2007-2019 |
4 | * Copyright Siemens AG 2015-2019 | |
5 | * | |
6 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
7 | * this file except in compliance with the License. You can obtain a copy | |
8 | * in the file LICENSE in the source distribution or at | |
9 | * https://www.openssl.org/source/license.html | |
10 | */ | |
11 | ||
12 | #include "cmp_local.h" | |
13 | #include "internal/cryptlib.h" | |
14 | ||
15 | /* explicit #includes not strictly needed since implied by the above: */ | |
16 | #include <openssl/bio.h> | |
17 | #include <openssl/cmp.h> | |
18 | #include <openssl/err.h> | |
19 | #include <openssl/evp.h> | |
20 | #include <openssl/x509v3.h> | |
21 | ||
22 | #include "openssl/cmp_util.h" | |
23 | ||
24 | #define IS_CREP(t) ((t) == OSSL_CMP_PKIBODY_IP || (t) == OSSL_CMP_PKIBODY_CP \ | |
25 | || (t) == OSSL_CMP_PKIBODY_KUP) | |
26 | ||
27 | /*- | |
28 | * Evaluate whether there's an exception (violating the standard) configured for | |
29 | * handling negative responses without protection or with invalid protection. | |
30 | * Returns 1 on acceptance, 0 on rejection, or -1 on (internal) error. | |
31 | */ | |
32 | static int unprotected_exception(const OSSL_CMP_CTX *ctx, | |
33 | const OSSL_CMP_MSG *rep, | |
34 | int invalid_protection, | |
35 | int expected_type /* ignored here */) | |
36 | { | |
37 | int rcvd_type = ossl_cmp_msg_get_bodytype(rep /* may be NULL */); | |
38 | const char *msg_type = NULL; | |
39 | ||
40 | if (!ossl_assert(ctx != NULL && rep != NULL)) | |
41 | return -1; | |
42 | ||
43 | if (!ctx->unprotectedErrors) | |
44 | return 0; | |
45 | ||
46 | switch (rcvd_type) { | |
47 | case OSSL_CMP_PKIBODY_ERROR: | |
48 | msg_type = "error response"; | |
49 | break; | |
50 | case OSSL_CMP_PKIBODY_RP: | |
51 | { | |
52 | OSSL_CMP_PKISI *si = | |
53 | ossl_cmp_revrepcontent_get_pkisi(rep->body->value.rp, | |
54 | OSSL_CMP_REVREQSID); | |
55 | ||
56 | if (si == NULL) | |
57 | return -1; | |
58 | if (ossl_cmp_pkisi_get_status(si) == OSSL_CMP_PKISTATUS_rejection) | |
59 | msg_type = "revocation response message with rejection status"; | |
60 | break; | |
61 | } | |
62 | case OSSL_CMP_PKIBODY_PKICONF: | |
63 | msg_type = "PKI Confirmation message"; | |
64 | break; | |
65 | default: | |
66 | if (IS_CREP(rcvd_type)) { | |
67 | OSSL_CMP_CERTREPMESSAGE *crepmsg = rep->body->value.ip; | |
68 | OSSL_CMP_CERTRESPONSE *crep = | |
69 | ossl_cmp_certrepmessage_get0_certresponse(crepmsg, | |
70 | -1 /* any rid */); | |
71 | ||
72 | if (sk_OSSL_CMP_CERTRESPONSE_num(crepmsg->response) > 1) | |
73 | return -1; | |
74 | /* TODO: handle potentially multiple CertResponses in CertRepMsg */ | |
75 | if (crep == NULL) | |
76 | return -1; | |
77 | if (ossl_cmp_pkisi_get_status(crep->status) | |
78 | == OSSL_CMP_PKISTATUS_rejection) | |
79 | msg_type = "CertRepMessage with rejection status"; | |
80 | } | |
81 | } | |
82 | if (msg_type == NULL) | |
83 | return 0; | |
84 | ossl_cmp_log2(WARN, ctx, "ignoring %s protection of %s", | |
85 | invalid_protection ? "invalid" : "missing", msg_type); | |
86 | return 1; | |
87 | } | |
88 | ||
7e765f46 DDO |
89 | /* Save error info from PKIStatusInfo field of a certresponse into ctx */ |
90 | static int save_statusInfo(OSSL_CMP_CTX *ctx, OSSL_CMP_PKISI *si) | |
91 | { | |
92 | int i; | |
93 | OSSL_CMP_PKIFREETEXT *ss; | |
94 | ||
95 | if (!ossl_assert(ctx != NULL && si != NULL)) | |
96 | return 0; | |
97 | ||
98 | if ((ctx->status = ossl_cmp_pkisi_get_status(si)) < 0) | |
99 | return 0; | |
100 | ||
101 | ctx->failInfoCode = 0; | |
102 | if (si->failInfo != NULL) { | |
103 | for (i = 0; i <= OSSL_CMP_PKIFAILUREINFO_MAX; i++) { | |
104 | if (ASN1_BIT_STRING_get_bit(si->failInfo, i)) | |
105 | ctx->failInfoCode |= (1 << i); | |
106 | } | |
107 | } | |
108 | ||
109 | if (!ossl_cmp_ctx_set0_statusString(ctx, sk_ASN1_UTF8STRING_new_null()) | |
110 | || (ctx->statusString == NULL)) | |
111 | return 0; | |
112 | ||
113 | ss = si->statusString; /* may be NULL */ | |
114 | for (i = 0; i < sk_ASN1_UTF8STRING_num(ss); i++) { | |
115 | ASN1_UTF8STRING *str = sk_ASN1_UTF8STRING_value(ss, i); | |
116 | ||
117 | if (!sk_ASN1_UTF8STRING_push(ctx->statusString, ASN1_STRING_dup(str))) | |
118 | return 0; | |
119 | } | |
120 | return 1; | |
121 | } | |
122 | ||
123 | /*- | |
124 | * Perform the generic aspects of sending a request and receiving a response. | |
125 | * Returns 1 on success and provides the received PKIMESSAGE in *rep. | |
126 | * Returns 0 on error. | |
127 | * Regardless of success, caller is responsible for freeing *rep (unless NULL). | |
128 | */ | |
129 | static int send_receive_check(OSSL_CMP_CTX *ctx, const OSSL_CMP_MSG *req, | |
130 | OSSL_CMP_MSG **rep, int expected_type) | |
131 | { | |
132 | const char *req_type_str = | |
133 | ossl_cmp_bodytype_to_string(ossl_cmp_msg_get_bodytype(req)); | |
134 | const char *expected_type_str = ossl_cmp_bodytype_to_string(expected_type); | |
135 | int msg_timeout; | |
136 | int bt; | |
137 | time_t now = time(NULL); | |
138 | int time_left; | |
139 | OSSL_CMP_transfer_cb_t transfer_cb = ctx->transfer_cb; | |
140 | ||
141 | if (transfer_cb == NULL) | |
afe554c2 | 142 | transfer_cb = OSSL_CMP_MSG_http_perform; |
7e765f46 DDO |
143 | |
144 | *rep = NULL; | |
145 | msg_timeout = ctx->msg_timeout; /* backup original value */ | |
146 | if ((IS_CREP(expected_type) || expected_type == OSSL_CMP_PKIBODY_POLLREP) | |
147 | && ctx->total_timeout > 0 /* timeout is not infinite */) { | |
148 | if (now >= ctx->end_time) { | |
9311d0c4 | 149 | ERR_raise(ERR_LIB_CMP, CMP_R_TOTAL_TIMEOUT); |
7e765f46 DDO |
150 | return 0; |
151 | } | |
152 | if (!ossl_assert(ctx->end_time - time(NULL) < INT_MAX)) { | |
153 | /* cannot really happen due to the assignment in do_certreq_seq() */ | |
9311d0c4 | 154 | ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS); |
7e765f46 DDO |
155 | return 0; |
156 | } | |
157 | time_left = (int)(ctx->end_time - now); | |
158 | if (ctx->msg_timeout == 0 || time_left < ctx->msg_timeout) | |
159 | ctx->msg_timeout = time_left; | |
160 | } | |
161 | ||
162 | /* should print error queue since transfer_cb may call ERR_clear_error() */ | |
163 | OSSL_CMP_CTX_print_errors(ctx); | |
164 | ||
165 | ossl_cmp_log1(INFO, ctx, "sending %s", req_type_str); | |
166 | ||
167 | *rep = (*transfer_cb)(ctx, req); | |
168 | ctx->msg_timeout = msg_timeout; /* restore original value */ | |
169 | ||
170 | if (*rep == NULL) { | |
a150f8e1 RL |
171 | ERR_raise_data(ERR_LIB_CMP, CMP_R_TRANSFER_ERROR, /* or receiving response */ |
172 | "request sent: %s, expected response: %s", | |
173 | req_type_str, expected_type_str); | |
7e765f46 DDO |
174 | return 0; |
175 | } | |
176 | ||
177 | bt = ossl_cmp_msg_get_bodytype(*rep); | |
178 | /* | |
179 | * The body type in the 'bt' variable is not yet verified. | |
180 | * Still we use this preliminary value already for a progress report because | |
181 | * the following msg verification may also produce log entries and may fail. | |
182 | */ | |
183 | ossl_cmp_log1(INFO, ctx, "received %s", ossl_cmp_bodytype_to_string(bt)); | |
184 | ||
bb30bce2 DDO |
185 | /* copy received extraCerts to ctx->extraCertsIn so they can be retrieved */ |
186 | if (bt != OSSL_CMP_PKIBODY_POLLREP && bt != OSSL_CMP_PKIBODY_PKICONF | |
187 | && !ossl_cmp_ctx_set1_extraCertsIn(ctx, (*rep)->extraCerts)) | |
188 | return 0; | |
189 | ||
430efff1 DDO |
190 | if (!ossl_cmp_msg_check_update(ctx, *rep, unprotected_exception, |
191 | expected_type)) | |
7e765f46 DDO |
192 | return 0; |
193 | ||
194 | if (bt == expected_type | |
195 | /* as an answer to polling, there could be IP/CP/KUP: */ | |
196 | || (IS_CREP(bt) && expected_type == OSSL_CMP_PKIBODY_POLLREP)) | |
197 | return 1; | |
198 | ||
199 | /* received message type is not one of the expected ones (e.g., error) */ | |
9311d0c4 | 200 | ERR_raise(ERR_LIB_CMP, bt == OSSL_CMP_PKIBODY_ERROR ? CMP_R_RECEIVED_ERROR : |
4c0d49ed | 201 | CMP_R_UNEXPECTED_PKIBODY); /* in next line for mkerr.pl */ |
7e765f46 DDO |
202 | |
203 | if (bt != OSSL_CMP_PKIBODY_ERROR) { | |
204 | ERR_add_error_data(3, "message type is '", | |
205 | ossl_cmp_bodytype_to_string(bt), "'"); | |
206 | } else { | |
207 | OSSL_CMP_ERRORMSGCONTENT *emc = (*rep)->body->value.error; | |
208 | OSSL_CMP_PKISI *si = emc->pKIStatusInfo; | |
209 | char buf[OSSL_CMP_PKISI_BUFLEN]; | |
210 | ||
211 | if (save_statusInfo(ctx, si) | |
143be474 DDO |
212 | && OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, |
213 | sizeof(buf)) != NULL) | |
7e765f46 DDO |
214 | ERR_add_error_data(1, buf); |
215 | if (emc->errorCode != NULL | |
216 | && BIO_snprintf(buf, sizeof(buf), "; errorCode: %ld", | |
217 | ASN1_INTEGER_get(emc->errorCode)) > 0) | |
218 | ERR_add_error_data(1, buf); | |
219 | if (emc->errorDetails != NULL) { | |
220 | char *text = sk_ASN1_UTF8STRING2text(emc->errorDetails, ", ", | |
221 | OSSL_CMP_PKISI_BUFLEN - 1); | |
222 | ||
223 | if (text != NULL) | |
224 | ERR_add_error_data(2, "; errorDetails: ", text); | |
225 | OPENSSL_free(text); | |
226 | } | |
227 | if (ctx->status != OSSL_CMP_PKISTATUS_rejection) { | |
9311d0c4 | 228 | ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKISTATUS); |
7e765f46 DDO |
229 | if (ctx->status == OSSL_CMP_PKISTATUS_waiting) |
230 | ctx->status = OSSL_CMP_PKISTATUS_rejection; | |
231 | } | |
232 | } | |
233 | return 0; | |
234 | } | |
235 | ||
236 | /*- | |
237 | * When a 'waiting' PKIStatus has been received, this function is used to | |
238 | * poll, which should yield a pollRep or finally a CertRepMessage in ip/cp/kup. | |
239 | * On receiving a pollRep, which includes a checkAfter value, it return this | |
240 | * value if sleep == 0, else it sleeps as long as indicated and retries. | |
241 | * | |
242 | * A transaction timeout is enabled if ctx->total_timeout is > 0. | |
243 | * In this case polling will continue until the timeout is reached and then | |
244 | * polling is done a last time even if this is before the "checkAfter" time. | |
245 | * | |
246 | * Returns -1 on receiving pollRep if sleep == 0, setting the checkAfter value. | |
247 | * Returns 1 on success and provides the received PKIMESSAGE in *rep. | |
248 | * In this case the caller is responsible for freeing *rep. | |
249 | * Returns 0 on error (which includes the case that timeout has been reached). | |
250 | */ | |
251 | static int poll_for_response(OSSL_CMP_CTX *ctx, int sleep, int rid, | |
252 | OSSL_CMP_MSG **rep, int *checkAfter) | |
253 | { | |
254 | OSSL_CMP_MSG *preq = NULL; | |
255 | OSSL_CMP_MSG *prep = NULL; | |
256 | ||
257 | ossl_cmp_info(ctx, | |
258 | "received 'waiting' PKIStatus, starting to poll for response"); | |
259 | *rep = NULL; | |
260 | for (;;) { | |
261 | /* TODO: handle potentially multiple poll requests per message */ | |
262 | if ((preq = ossl_cmp_pollReq_new(ctx, rid)) == NULL) | |
263 | goto err; | |
264 | ||
265 | if (!send_receive_check(ctx, preq, &prep, OSSL_CMP_PKIBODY_POLLREP)) | |
266 | goto err; | |
267 | ||
268 | /* handle potential pollRep */ | |
269 | if (ossl_cmp_msg_get_bodytype(prep) == OSSL_CMP_PKIBODY_POLLREP) { | |
270 | OSSL_CMP_POLLREPCONTENT *prc = prep->body->value.pollRep; | |
271 | OSSL_CMP_POLLREP *pollRep = NULL; | |
272 | int64_t check_after; | |
273 | char str[OSSL_CMP_PKISI_BUFLEN]; | |
274 | int len; | |
275 | ||
276 | /* TODO: handle potentially multiple elements in pollRep */ | |
277 | if (sk_OSSL_CMP_POLLREP_num(prc) > 1) { | |
9311d0c4 | 278 | ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED); |
7e765f46 DDO |
279 | goto err; |
280 | } | |
281 | pollRep = ossl_cmp_pollrepcontent_get0_pollrep(prc, rid); | |
282 | if (pollRep == NULL) | |
283 | goto err; | |
284 | ||
285 | if (!ASN1_INTEGER_get_int64(&check_after, pollRep->checkAfter)) { | |
9311d0c4 | 286 | ERR_raise(ERR_LIB_CMP, CMP_R_BAD_CHECKAFTER_IN_POLLREP); |
7e765f46 DDO |
287 | goto err; |
288 | } | |
289 | if (check_after < 0 || (uint64_t)check_after | |
290 | > (sleep ? ULONG_MAX / 1000 : INT_MAX)) { | |
9311d0c4 | 291 | ERR_raise(ERR_LIB_CMP, CMP_R_CHECKAFTER_OUT_OF_RANGE); |
b5f7aa5c | 292 | if (BIO_snprintf(str, OSSL_CMP_PKISI_BUFLEN, "value = %jd", |
7e765f46 DDO |
293 | check_after) >= 0) |
294 | ERR_add_error_data(1, str); | |
295 | goto err; | |
296 | } | |
297 | if (ctx->total_timeout > 0) { /* timeout is not infinite */ | |
298 | const int exp = 5; /* expected max time per msg round trip */ | |
299 | int64_t time_left = (int64_t)(ctx->end_time - exp - time(NULL)); | |
300 | ||
301 | if (time_left <= 0) { | |
9311d0c4 | 302 | ERR_raise(ERR_LIB_CMP, CMP_R_TOTAL_TIMEOUT); |
7e765f46 DDO |
303 | goto err; |
304 | } | |
305 | if (time_left < check_after) | |
306 | check_after = time_left; | |
307 | /* poll one last time just when timeout was reached */ | |
308 | } | |
309 | ||
310 | if (pollRep->reason == NULL | |
311 | || (len = BIO_snprintf(str, OSSL_CMP_PKISI_BUFLEN, | |
312 | " with reason = '")) < 0) { | |
313 | *str = '\0'; | |
314 | } else { | |
315 | char *text = sk_ASN1_UTF8STRING2text(pollRep->reason, ", ", | |
316 | sizeof(str) - len - 2); | |
317 | ||
318 | if (text == NULL | |
319 | || BIO_snprintf(str + len, sizeof(str) - len, | |
320 | "%s'", text) < 0) | |
321 | *str = '\0'; | |
322 | OPENSSL_free(text); | |
323 | } | |
324 | ossl_cmp_log2(INFO, ctx, | |
325 | "received polling response%s; checkAfter = %ld seconds", | |
326 | str, check_after); | |
327 | ||
328 | OSSL_CMP_MSG_free(preq); | |
329 | preq = NULL; | |
330 | OSSL_CMP_MSG_free(prep); | |
331 | prep = NULL; | |
332 | if (sleep) { | |
333 | ossl_sleep((unsigned long)(1000 * check_after)); | |
334 | } else { | |
335 | if (checkAfter != NULL) | |
336 | *checkAfter = (int)check_after; | |
337 | return -1; /* exits the loop */ | |
338 | } | |
339 | } else { | |
340 | ossl_cmp_info(ctx, "received ip/cp/kup after polling"); | |
341 | /* any other body type has been rejected by send_receive_check() */ | |
342 | break; | |
343 | } | |
344 | } | |
345 | if (prep == NULL) | |
346 | goto err; | |
347 | ||
348 | OSSL_CMP_MSG_free(preq); | |
349 | *rep = prep; | |
350 | ||
351 | return 1; | |
352 | err: | |
353 | OSSL_CMP_MSG_free(preq); | |
354 | OSSL_CMP_MSG_free(prep); | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /* Send certConf for IR, CR or KUR sequences and check response */ | |
359 | int ossl_cmp_exchange_certConf(OSSL_CMP_CTX *ctx, int fail_info, | |
360 | const char *txt) | |
361 | { | |
362 | OSSL_CMP_MSG *certConf; | |
363 | OSSL_CMP_MSG *PKIconf = NULL; | |
364 | int res = 0; | |
365 | ||
366 | /* OSSL_CMP_certConf_new() also checks if all necessary options are set */ | |
367 | if ((certConf = ossl_cmp_certConf_new(ctx, fail_info, txt)) == NULL) | |
368 | goto err; | |
369 | ||
370 | res = send_receive_check(ctx, certConf, &PKIconf, OSSL_CMP_PKIBODY_PKICONF); | |
371 | ||
372 | err: | |
373 | OSSL_CMP_MSG_free(certConf); | |
374 | OSSL_CMP_MSG_free(PKIconf); | |
375 | return res; | |
376 | } | |
377 | ||
378 | /* Send given error and check response */ | |
379 | int ossl_cmp_exchange_error(OSSL_CMP_CTX *ctx, int status, int fail_info, | |
380 | const char *txt, int errorCode, const char *details) | |
381 | { | |
382 | OSSL_CMP_MSG *error = NULL; | |
383 | OSSL_CMP_PKISI *si = NULL; | |
384 | OSSL_CMP_MSG *PKIconf = NULL; | |
385 | int res = 0; | |
386 | ||
387 | if ((si = OSSL_CMP_STATUSINFO_new(status, fail_info, txt)) == NULL) | |
388 | goto err; | |
389 | /* ossl_cmp_error_new() also checks if all necessary options are set */ | |
390 | if ((error = ossl_cmp_error_new(ctx, si, errorCode, details, 0)) == NULL) | |
391 | goto err; | |
392 | ||
393 | res = send_receive_check(ctx, error, &PKIconf, OSSL_CMP_PKIBODY_PKICONF); | |
394 | ||
395 | err: | |
396 | OSSL_CMP_MSG_free(error); | |
397 | OSSL_CMP_PKISI_free(si); | |
398 | OSSL_CMP_MSG_free(PKIconf); | |
399 | return res; | |
400 | } | |
401 | ||
402 | /*- | |
403 | * Retrieve a copy of the certificate, if any, from the given CertResponse. | |
404 | * Take into account PKIStatusInfo of CertResponse in ctx, report it on error. | |
405 | * Returns NULL if not found or on error. | |
406 | */ | |
407 | static X509 *get1_cert_status(OSSL_CMP_CTX *ctx, int bodytype, | |
408 | OSSL_CMP_CERTRESPONSE *crep) | |
409 | { | |
410 | char buf[OSSL_CMP_PKISI_BUFLEN]; | |
411 | X509 *crt = NULL; | |
412 | EVP_PKEY *privkey; | |
413 | ||
414 | if (!ossl_assert(ctx != NULL && crep != NULL)) | |
415 | return NULL; | |
416 | ||
417 | privkey = OSSL_CMP_CTX_get0_newPkey(ctx, 1); | |
418 | switch (ossl_cmp_pkisi_get_status(crep->status)) { | |
419 | case OSSL_CMP_PKISTATUS_waiting: | |
420 | ossl_cmp_err(ctx, | |
421 | "received \"waiting\" status for cert when actually aiming to extract cert"); | |
9311d0c4 | 422 | ERR_raise(ERR_LIB_CMP, CMP_R_ENCOUNTERED_WAITING); |
7e765f46 DDO |
423 | goto err; |
424 | case OSSL_CMP_PKISTATUS_grantedWithMods: | |
425 | ossl_cmp_warn(ctx, "received \"grantedWithMods\" for certificate"); | |
7e765f46 DDO |
426 | break; |
427 | case OSSL_CMP_PKISTATUS_accepted: | |
7e765f46 DDO |
428 | break; |
429 | /* get all information in case of a rejection before going to error */ | |
430 | case OSSL_CMP_PKISTATUS_rejection: | |
431 | ossl_cmp_err(ctx, "received \"rejection\" status rather than cert"); | |
9311d0c4 | 432 | ERR_raise(ERR_LIB_CMP, CMP_R_REQUEST_REJECTED_BY_SERVER); |
7e765f46 DDO |
433 | goto err; |
434 | case OSSL_CMP_PKISTATUS_revocationWarning: | |
435 | ossl_cmp_warn(ctx, | |
436 | "received \"revocationWarning\" - a revocation of the cert is imminent"); | |
7e765f46 DDO |
437 | break; |
438 | case OSSL_CMP_PKISTATUS_revocationNotification: | |
439 | ossl_cmp_warn(ctx, | |
440 | "received \"revocationNotification\" - a revocation of the cert has occurred"); | |
7e765f46 DDO |
441 | break; |
442 | case OSSL_CMP_PKISTATUS_keyUpdateWarning: | |
443 | if (bodytype != OSSL_CMP_PKIBODY_KUR) { | |
9311d0c4 | 444 | ERR_raise(ERR_LIB_CMP, CMP_R_ENCOUNTERED_KEYUPDATEWARNING); |
7e765f46 DDO |
445 | goto err; |
446 | } | |
7e765f46 DDO |
447 | break; |
448 | default: | |
449 | ossl_cmp_log1(ERROR, ctx, | |
450 | "received unsupported PKIStatus %d for certificate", | |
451 | ctx->status); | |
9311d0c4 | 452 | ERR_raise(ERR_LIB_CMP, CMP_R_UNKNOWN_PKISTATUS); |
7e765f46 DDO |
453 | goto err; |
454 | } | |
6d1f50b5 | 455 | crt = ossl_cmp_certresponse_get1_cert(crep, ctx, privkey); |
7e765f46 | 456 | if (crt == NULL) /* according to PKIStatus, we can expect a cert */ |
9311d0c4 | 457 | ERR_raise(ERR_LIB_CMP, CMP_R_CERTIFICATE_NOT_FOUND); |
7e765f46 DDO |
458 | |
459 | return crt; | |
460 | ||
461 | err: | |
462 | if (OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, sizeof(buf)) != NULL) | |
463 | ERR_add_error_data(1, buf); | |
464 | return NULL; | |
465 | } | |
466 | ||
467 | /*- | |
468 | * Callback fn validating that the new certificate can be verified, using | |
469 | * ctx->certConf_cb_arg, which has been initialized using opt_out_trusted, and | |
bb30bce2 | 470 | * ctx->untrusted, which at this point already contains msg->extraCerts. |
7e765f46 DDO |
471 | * Returns 0 on acceptance, else a bit field reflecting PKIFailureInfo. |
472 | * Quoting from RFC 4210 section 5.1. Overall PKI Message: | |
473 | * The extraCerts field can contain certificates that may be useful to | |
474 | * the recipient. For example, this can be used by a CA or RA to | |
475 | * present an end entity with certificates that it needs to verify its | |
476 | * own new certificate (if, for example, the CA that issued the end | |
477 | * entity's certificate is not a root CA for the end entity). Note that | |
478 | * this field does not necessarily contain a certification path; the | |
479 | * recipient may have to sort, select from, or otherwise process the | |
480 | * extra certificates in order to use them. | |
481 | * Note: While often handy, there is no hard requirement by CMP that | |
482 | * an EE must be able to validate the certificates it gets enrolled. | |
483 | */ | |
484 | int OSSL_CMP_certConf_cb(OSSL_CMP_CTX *ctx, X509 *cert, int fail_info, | |
485 | const char **text) | |
486 | { | |
487 | X509_STORE *out_trusted = OSSL_CMP_CTX_get_certConf_cb_arg(ctx); | |
a0745e2b | 488 | STACK_OF(X509) *chain = NULL; |
7e765f46 DDO |
489 | (void)text; /* make (artificial) use of var to prevent compiler warning */ |
490 | ||
491 | if (fail_info != 0) /* accept any error flagged by CMP core library */ | |
492 | return fail_info; | |
493 | ||
a0745e2b DDO |
494 | ossl_cmp_debug(ctx, "trying to build chain for newly enrolled cert"); |
495 | chain = ossl_cmp_build_cert_chain(ctx->libctx, ctx->propq, | |
496 | out_trusted /* may be NULL */, | |
497 | ctx->untrusted, cert); | |
498 | if (sk_X509_num(chain) > 0) | |
499 | X509_free(sk_X509_shift(chain)); /* remove leaf (EE) cert */ | |
500 | if (out_trusted != NULL) { | |
501 | if (chain == NULL) { | |
502 | ossl_cmp_err(ctx, "failed building chain for newly enrolled cert"); | |
503 | fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_incorrectData; | |
504 | } else { | |
505 | ossl_cmp_debug(ctx, | |
506 | "succeeded building proper chain for newly enrolled cert"); | |
507 | } | |
508 | } else if (chain == NULL) { | |
509 | ossl_cmp_warn(ctx, "could not build approximate chain for newly enrolled cert, resorting to received extraCerts"); | |
510 | chain = OSSL_CMP_CTX_get1_extraCertsIn(ctx); | |
511 | } else { | |
512 | ossl_cmp_debug(ctx, | |
513 | "success building approximate chain for newly enrolled cert"); | |
514 | } | |
515 | (void)ossl_cmp_ctx_set1_newChain(ctx, chain); | |
516 | sk_X509_pop_free(chain, X509_free); | |
7e765f46 DDO |
517 | |
518 | return fail_info; | |
519 | } | |
520 | ||
521 | /*- | |
522 | * Perform the generic handling of certificate responses for IR/CR/KUR/P10CR. | |
523 | * Returns -1 on receiving pollRep if sleep == 0, setting the checkAfter value. | |
524 | * Returns 1 on success and provides the received PKIMESSAGE in *resp. | |
525 | * Returns 0 on error (which includes the case that timeout has been reached). | |
526 | * Regardless of success, caller is responsible for freeing *resp (unless NULL). | |
527 | */ | |
528 | static int cert_response(OSSL_CMP_CTX *ctx, int sleep, int rid, | |
529 | OSSL_CMP_MSG **resp, int *checkAfter, | |
530 | int req_type, int expected_type) | |
531 | { | |
532 | EVP_PKEY *rkey = OSSL_CMP_CTX_get0_newPkey(ctx /* may be NULL */, 0); | |
533 | int fail_info = 0; /* no failure */ | |
534 | const char *txt = NULL; | |
535 | OSSL_CMP_CERTREPMESSAGE *crepmsg; | |
536 | OSSL_CMP_CERTRESPONSE *crep; | |
a0745e2b | 537 | OSSL_CMP_certConf_cb_t cb; |
7e765f46 DDO |
538 | X509 *cert; |
539 | char *subj = NULL; | |
540 | int ret = 1; | |
541 | ||
a0745e2b DDO |
542 | if (!ossl_assert(ctx != NULL)) |
543 | return 0; | |
544 | ||
7e765f46 DDO |
545 | retry: |
546 | crepmsg = (*resp)->body->value.ip; /* same for cp and kup */ | |
547 | if (sk_OSSL_CMP_CERTRESPONSE_num(crepmsg->response) > 1) { | |
9311d0c4 | 548 | ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED); |
7e765f46 DDO |
549 | return 0; |
550 | } | |
551 | /* TODO: handle potentially multiple CertResponses in CertRepMsg */ | |
552 | crep = ossl_cmp_certrepmessage_get0_certresponse(crepmsg, rid); | |
553 | if (crep == NULL) | |
554 | return 0; | |
555 | if (!save_statusInfo(ctx, crep->status)) | |
556 | return 0; | |
557 | if (rid == -1) { | |
558 | /* for OSSL_CMP_PKIBODY_P10CR learn CertReqId from response */ | |
559 | rid = ossl_cmp_asn1_get_int(crep->certReqId); | |
560 | if (rid == -1) { | |
9311d0c4 | 561 | ERR_raise(ERR_LIB_CMP, CMP_R_BAD_REQUEST_ID); |
7e765f46 DDO |
562 | return 0; |
563 | } | |
564 | } | |
565 | ||
566 | if (ossl_cmp_pkisi_get_status(crep->status) == OSSL_CMP_PKISTATUS_waiting) { | |
567 | OSSL_CMP_MSG_free(*resp); | |
568 | *resp = NULL; | |
569 | if ((ret = poll_for_response(ctx, sleep, rid, resp, checkAfter)) != 0) { | |
570 | if (ret == -1) /* at this point implies sleep == 0 */ | |
571 | return ret; /* waiting */ | |
572 | goto retry; /* got ip/cp/kup, which may still indicate 'waiting' */ | |
573 | } else { | |
9311d0c4 | 574 | ERR_raise(ERR_LIB_CMP, CMP_R_POLLING_FAILED); |
7e765f46 DDO |
575 | return 0; |
576 | } | |
577 | } | |
578 | ||
579 | cert = get1_cert_status(ctx, (*resp)->body->type, crep); | |
580 | if (cert == NULL) { | |
581 | ERR_add_error_data(1, "; cannot extract certificate from response"); | |
582 | return 0; | |
583 | } | |
584 | if (!ossl_cmp_ctx_set0_newCert(ctx, cert)) | |
585 | return 0; | |
586 | ||
587 | /* | |
588 | * if the CMP server returned certificates in the caPubs field, copy them | |
589 | * to the context so that they can be retrieved if necessary | |
590 | */ | |
591 | if (crepmsg->caPubs != NULL | |
592 | && !ossl_cmp_ctx_set1_caPubs(ctx, crepmsg->caPubs)) | |
593 | return 0; | |
594 | ||
7e765f46 DDO |
595 | subj = X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0); |
596 | if (rkey != NULL | |
597 | /* X509_check_private_key() also works if rkey is just public key */ | |
598 | && !(X509_check_private_key(ctx->newCert, rkey))) { | |
599 | fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_incorrectData; | |
600 | txt = "public key in new certificate does not match our enrollment key"; | |
601 | /*- | |
bb30bce2 DDO |
602 | * not calling (void)ossl_cmp_exchange_error(ctx, |
603 | * OSSL_CMP_PKISTATUS_rejection, fail_info, txt) | |
7e765f46 DDO |
604 | * not throwing CMP_R_CERTIFICATE_NOT_ACCEPTED with txt |
605 | * not returning 0 | |
a0745e2b | 606 | * since we better leave this for the certConf_cb to decide |
7e765f46 DDO |
607 | */ |
608 | } | |
609 | ||
610 | /* | |
a0745e2b | 611 | * Execute the certification checking callback function, |
7e765f46 DDO |
612 | * which can determine whether to accept a newly enrolled certificate. |
613 | * It may overrule the pre-decision reflected in 'fail_info' and '*txt'. | |
614 | */ | |
a0745e2b DDO |
615 | cb = ctx->certConf_cb != NULL ? ctx->certConf_cb : OSSL_CMP_certConf_cb; |
616 | if ((fail_info = cb(ctx, ctx->newCert, fail_info, &txt)) != 0 | |
617 | && txt == NULL) | |
618 | txt = "CMP client did not accept it"; | |
7e765f46 DDO |
619 | if (fail_info != 0) /* immediately log error before any certConf exchange */ |
620 | ossl_cmp_log1(ERROR, ctx, | |
621 | "rejecting newly enrolled cert with subject: %s", subj); | |
622 | ||
623 | /* | |
624 | * TODO: better move certConf exchange to do_certreq_seq() such that | |
625 | * also more low-level errors with CertReqMessages get reported to server | |
626 | */ | |
627 | if (!ctx->disableConfirm | |
628 | && !ossl_cmp_hdr_has_implicitConfirm((*resp)->header)) { | |
629 | if (!ossl_cmp_exchange_certConf(ctx, fail_info, txt)) | |
630 | ret = 0; | |
631 | } | |
632 | ||
633 | /* not throwing failure earlier as transfer_cb may call ERR_clear_error() */ | |
634 | if (fail_info != 0) { | |
a676c53c | 635 | ERR_raise_data(ERR_LIB_CMP, CMP_R_CERTIFICATE_NOT_ACCEPTED, |
4c0d49ed AS |
636 | "rejecting newly enrolled cert with subject: %s; %s", |
637 | subj, txt); | |
7e765f46 DDO |
638 | ret = 0; |
639 | } | |
640 | OPENSSL_free(subj); | |
641 | return ret; | |
642 | } | |
643 | ||
299e0f1e DDO |
644 | int OSSL_CMP_try_certreq(OSSL_CMP_CTX *ctx, int req_type, |
645 | const OSSL_CRMF_MSG *crm, int *checkAfter) | |
7e765f46 DDO |
646 | { |
647 | OSSL_CMP_MSG *req = NULL; | |
648 | OSSL_CMP_MSG *rep = NULL; | |
649 | int is_p10 = req_type == OSSL_CMP_PKIBODY_P10CR; | |
650 | int rid = is_p10 ? -1 : OSSL_CMP_CERTREQID; | |
651 | int rep_type = is_p10 ? OSSL_CMP_PKIBODY_CP : req_type + 1; | |
652 | int res = 0; | |
653 | ||
654 | if (ctx == NULL) { | |
9311d0c4 | 655 | ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); |
7e765f46 DDO |
656 | return 0; |
657 | } | |
658 | ||
659 | if (ctx->status != OSSL_CMP_PKISTATUS_waiting) { /* not polling already */ | |
660 | ctx->status = -1; | |
661 | if (!ossl_cmp_ctx_set0_newCert(ctx, NULL)) | |
662 | return 0; | |
663 | ||
664 | if (ctx->total_timeout > 0) /* else ctx->end_time is not used */ | |
665 | ctx->end_time = time(NULL) + ctx->total_timeout; | |
666 | ||
299e0f1e | 667 | req = ossl_cmp_certreq_new(ctx, req_type, crm); |
7e765f46 DDO |
668 | if (req == NULL) /* also checks if all necessary options are set */ |
669 | return 0; | |
670 | ||
671 | if (!send_receive_check(ctx, req, &rep, rep_type)) | |
672 | goto err; | |
673 | } else { | |
674 | if (req_type < 0) | |
675 | return ossl_cmp_exchange_error(ctx, OSSL_CMP_PKISTATUS_rejection, | |
676 | 0 /* TODO better fail_info value? */, | |
677 | "polling aborted", 0 /* errorCode */, | |
678 | "by application"); | |
679 | res = poll_for_response(ctx, 0 /* no sleep */, rid, &rep, checkAfter); | |
680 | if (res <= 0) /* waiting or error */ | |
681 | return res; | |
682 | } | |
683 | res = cert_response(ctx, 0 /* no sleep */, rid, &rep, checkAfter, | |
684 | req_type, rep_type); | |
685 | ||
686 | err: | |
687 | OSSL_CMP_MSG_free(req); | |
688 | OSSL_CMP_MSG_free(rep); | |
689 | return res; | |
690 | } | |
691 | ||
692 | /*- | |
693 | * Do the full sequence CR/IR/KUR/P10CR, CP/IP/KUP/CP, | |
694 | * certConf, PKIconf, and polling if required. | |
695 | * Will sleep as long as indicated by the server (according to checkAfter). | |
696 | * All enrollment options need to be present in the context. | |
697 | * TODO: another function to request two certificates at once should be created. | |
698 | * Returns pointer to received certificate, or NULL if none was received. | |
699 | */ | |
299e0f1e DDO |
700 | X509 *OSSL_CMP_exec_certreq(OSSL_CMP_CTX *ctx, int req_type, |
701 | const OSSL_CRMF_MSG *crm) | |
7e765f46 | 702 | { |
299e0f1e | 703 | |
7e765f46 DDO |
704 | OSSL_CMP_MSG *req = NULL; |
705 | OSSL_CMP_MSG *rep = NULL; | |
299e0f1e DDO |
706 | int is_p10 = req_type == OSSL_CMP_PKIBODY_P10CR; |
707 | int rid = is_p10 ? -1 : OSSL_CMP_CERTREQID; | |
708 | int rep_type = is_p10 ? OSSL_CMP_PKIBODY_CP : req_type + 1; | |
7e765f46 DDO |
709 | X509 *result = NULL; |
710 | ||
711 | if (ctx == NULL) { | |
9311d0c4 | 712 | ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); |
7e765f46 DDO |
713 | return NULL; |
714 | } | |
299e0f1e | 715 | if (is_p10 && crm != NULL) { |
9311d0c4 | 716 | ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS); |
299e0f1e DDO |
717 | return NULL; |
718 | } | |
719 | ||
7e765f46 DDO |
720 | ctx->status = -1; |
721 | if (!ossl_cmp_ctx_set0_newCert(ctx, NULL)) | |
722 | return NULL; | |
723 | ||
724 | if (ctx->total_timeout > 0) /* else ctx->end_time is not used */ | |
725 | ctx->end_time = time(NULL) + ctx->total_timeout; | |
726 | ||
727 | /* OSSL_CMP_certreq_new() also checks if all necessary options are set */ | |
299e0f1e | 728 | if ((req = ossl_cmp_certreq_new(ctx, req_type, crm)) == NULL) |
7e765f46 DDO |
729 | goto err; |
730 | ||
731 | if (!send_receive_check(ctx, req, &rep, rep_type)) | |
732 | goto err; | |
733 | ||
734 | if (cert_response(ctx, 1 /* sleep */, rid, &rep, NULL, req_type, rep_type) | |
735 | <= 0) | |
736 | goto err; | |
737 | ||
738 | result = ctx->newCert; | |
739 | err: | |
740 | OSSL_CMP_MSG_free(req); | |
741 | OSSL_CMP_MSG_free(rep); | |
742 | return result; | |
743 | } | |
744 | ||
7e765f46 DDO |
745 | X509 *OSSL_CMP_exec_RR_ses(OSSL_CMP_CTX *ctx) |
746 | { | |
747 | OSSL_CMP_MSG *rr = NULL; | |
748 | OSSL_CMP_MSG *rp = NULL; | |
749 | const int num_RevDetails = 1; | |
750 | const int rsid = OSSL_CMP_REVREQSID; | |
751 | OSSL_CMP_REVREPCONTENT *rrep = NULL; | |
752 | OSSL_CMP_PKISI *si = NULL; | |
753 | char buf[OSSL_CMP_PKISI_BUFLEN]; | |
754 | X509 *result = NULL; | |
755 | ||
756 | if (ctx == NULL) { | |
9311d0c4 | 757 | ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS); |
7e765f46 DDO |
758 | return 0; |
759 | } | |
753283cd | 760 | if (ctx->oldCert == NULL) { |
9311d0c4 | 761 | ERR_raise(ERR_LIB_CMP, CMP_R_MISSING_REFERENCE_CERT); |
753283cd DDO |
762 | return 0; |
763 | } | |
7e765f46 DDO |
764 | ctx->status = -1; |
765 | ||
766 | /* OSSL_CMP_rr_new() also checks if all necessary options are set */ | |
767 | if ((rr = ossl_cmp_rr_new(ctx)) == NULL) | |
768 | goto end; | |
769 | ||
770 | if (!send_receive_check(ctx, rr, &rp, OSSL_CMP_PKIBODY_RP)) | |
771 | goto end; | |
772 | ||
773 | rrep = rp->body->value.rp; | |
e599d0ae | 774 | #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION |
7e765f46 | 775 | if (sk_OSSL_CMP_PKISI_num(rrep->status) != num_RevDetails) { |
9311d0c4 | 776 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_RP_COMPONENT_COUNT); |
7e765f46 DDO |
777 | goto end; |
778 | } | |
e599d0ae DDO |
779 | #else |
780 | if (sk_OSSL_CMP_PKISI_num(rrep->status) < 1) { | |
9311d0c4 | 781 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_RP_COMPONENT_COUNT); |
e599d0ae DDO |
782 | goto end; |
783 | } | |
784 | #endif | |
7e765f46 DDO |
785 | |
786 | /* evaluate PKIStatus field */ | |
787 | si = ossl_cmp_revrepcontent_get_pkisi(rrep, rsid); | |
788 | if (!save_statusInfo(ctx, si)) | |
789 | goto err; | |
790 | switch (ossl_cmp_pkisi_get_status(si)) { | |
791 | case OSSL_CMP_PKISTATUS_accepted: | |
792 | ossl_cmp_info(ctx, "revocation accepted (PKIStatus=accepted)"); | |
793 | result = ctx->oldCert; | |
794 | break; | |
795 | case OSSL_CMP_PKISTATUS_grantedWithMods: | |
796 | ossl_cmp_info(ctx, "revocation accepted (PKIStatus=grantedWithMods)"); | |
797 | result = ctx->oldCert; | |
798 | break; | |
799 | case OSSL_CMP_PKISTATUS_rejection: | |
9311d0c4 | 800 | ERR_raise(ERR_LIB_CMP, CMP_R_REQUEST_REJECTED_BY_SERVER); |
7e765f46 DDO |
801 | goto err; |
802 | case OSSL_CMP_PKISTATUS_revocationWarning: | |
803 | ossl_cmp_info(ctx, "revocation accepted (PKIStatus=revocationWarning)"); | |
804 | result = ctx->oldCert; | |
805 | break; | |
806 | case OSSL_CMP_PKISTATUS_revocationNotification: | |
807 | /* interpretation as warning or error depends on CA */ | |
808 | ossl_cmp_warn(ctx, | |
809 | "revocation accepted (PKIStatus=revocationNotification)"); | |
810 | result = ctx->oldCert; | |
811 | break; | |
812 | case OSSL_CMP_PKISTATUS_waiting: | |
813 | case OSSL_CMP_PKISTATUS_keyUpdateWarning: | |
9311d0c4 | 814 | ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKISTATUS); |
7e765f46 DDO |
815 | goto err; |
816 | default: | |
9311d0c4 | 817 | ERR_raise(ERR_LIB_CMP, CMP_R_UNKNOWN_PKISTATUS); |
7e765f46 DDO |
818 | goto err; |
819 | } | |
820 | ||
821 | /* check any present CertId in optional revCerts field */ | |
822 | if (rrep->revCerts != NULL) { | |
823 | OSSL_CRMF_CERTID *cid; | |
824 | OSSL_CRMF_CERTTEMPLATE *tmpl = | |
825 | sk_OSSL_CMP_REVDETAILS_value(rr->body->value.rr, rsid)->certDetails; | |
826 | const X509_NAME *issuer = OSSL_CRMF_CERTTEMPLATE_get0_issuer(tmpl); | |
827 | ASN1_INTEGER *serial = OSSL_CRMF_CERTTEMPLATE_get0_serialNumber(tmpl); | |
828 | ||
829 | if (sk_OSSL_CRMF_CERTID_num(rrep->revCerts) != num_RevDetails) { | |
9311d0c4 | 830 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_RP_COMPONENT_COUNT); |
7e765f46 DDO |
831 | result = NULL; |
832 | goto err; | |
833 | } | |
834 | if ((cid = ossl_cmp_revrepcontent_get_CertId(rrep, rsid)) == NULL) { | |
835 | result = NULL; | |
836 | goto err; | |
837 | } | |
838 | if (X509_NAME_cmp(issuer, OSSL_CRMF_CERTID_get0_issuer(cid)) != 0) { | |
e599d0ae | 839 | #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION |
9311d0c4 | 840 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_CERTID_IN_RP); |
7e765f46 DDO |
841 | result = NULL; |
842 | goto err; | |
e599d0ae | 843 | #endif |
7e765f46 DDO |
844 | } |
845 | if (ASN1_INTEGER_cmp(serial, | |
846 | OSSL_CRMF_CERTID_get0_serialNumber(cid)) != 0) { | |
e599d0ae | 847 | #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION |
9311d0c4 | 848 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_SERIAL_IN_RP); |
7e765f46 DDO |
849 | result = NULL; |
850 | goto err; | |
e599d0ae | 851 | #endif |
7e765f46 DDO |
852 | } |
853 | } | |
854 | ||
855 | /* check number of any optionally present crls */ | |
856 | if (rrep->crls != NULL && sk_X509_CRL_num(rrep->crls) != num_RevDetails) { | |
9311d0c4 | 857 | ERR_raise(ERR_LIB_CMP, CMP_R_WRONG_RP_COMPONENT_COUNT); |
7e765f46 DDO |
858 | result = NULL; |
859 | goto err; | |
860 | } | |
861 | ||
862 | err: | |
863 | if (result == NULL | |
864 | && OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, sizeof(buf)) != NULL) | |
865 | ERR_add_error_data(1, buf); | |
866 | ||
867 | end: | |
868 | OSSL_CMP_MSG_free(rr); | |
869 | OSSL_CMP_MSG_free(rp); | |
870 | return result; | |
871 | } | |
872 | ||
873 | STACK_OF(OSSL_CMP_ITAV) *OSSL_CMP_exec_GENM_ses(OSSL_CMP_CTX *ctx) | |
874 | { | |
875 | OSSL_CMP_MSG *genm; | |
876 | OSSL_CMP_MSG *genp = NULL; | |
877 | STACK_OF(OSSL_CMP_ITAV) *rcvd_itavs = NULL; | |
878 | ||
879 | if (ctx == NULL) { | |
9311d0c4 | 880 | ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_ARGS); |
7e765f46 DDO |
881 | return 0; |
882 | } | |
8c5c2fa5 | 883 | ctx->status = -1; |
7e765f46 DDO |
884 | |
885 | if ((genm = ossl_cmp_genm_new(ctx)) == NULL) | |
886 | goto err; | |
887 | ||
888 | if (!send_receive_check(ctx, genm, &genp, OSSL_CMP_PKIBODY_GENP)) | |
889 | goto err; | |
890 | ||
891 | /* received stack of itavs not to be freed with the genp */ | |
892 | rcvd_itavs = genp->body->value.genp; | |
893 | genp->body->value.genp = NULL; | |
894 | ||
895 | err: | |
896 | OSSL_CMP_MSG_free(genm); | |
897 | OSSL_CMP_MSG_free(genp); | |
898 | ||
899 | return rcvd_itavs; /* recv_itavs == NULL indicates an error */ | |
900 | } |