2 * Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright Nokia 2007-2019
4 * Copyright Siemens AG 2015-2019
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
12 #include "cmp_local.h"
13 #include "internal/cryptlib.h"
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>
22 #include "openssl/cmp_util.h"
24 #define IS_CREP(t) ((t) == OSSL_CMP_PKIBODY_IP || (t) == OSSL_CMP_PKIBODY_CP \
25 || (t) == OSSL_CMP_PKIBODY_KUP)
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.
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 */)
37 int rcvd_type = ossl_cmp_msg_get_bodytype(rep /* may be NULL */);
38 const char *msg_type = NULL;
40 if (!ossl_assert(ctx != NULL && rep != NULL))
43 if (!ctx->unprotectedErrors)
47 case OSSL_CMP_PKIBODY_ERROR:
48 msg_type = "error response";
50 case OSSL_CMP_PKIBODY_RP:
53 ossl_cmp_revrepcontent_get_pkisi(rep->body->value.rp,
58 if (ossl_cmp_pkisi_get_status(si) == OSSL_CMP_PKISTATUS_rejection)
59 msg_type = "revocation response message with rejection status";
62 case OSSL_CMP_PKIBODY_PKICONF:
63 msg_type = "PKI Confirmation message";
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,
72 if (sk_OSSL_CMP_CERTRESPONSE_num(crepmsg->response) > 1)
74 /* TODO: handle potentially multiple CertResponses in CertRepMsg */
77 if (ossl_cmp_pkisi_get_status(crep->status)
78 == OSSL_CMP_PKISTATUS_rejection)
79 msg_type = "CertRepMessage with rejection status";
84 ossl_cmp_log2(WARN, ctx, "ignoring %s protection of %s",
85 invalid_protection ? "invalid" : "missing", msg_type);
90 /* Save error info from PKIStatusInfo field of a certresponse into ctx */
91 static int save_statusInfo(OSSL_CMP_CTX *ctx, OSSL_CMP_PKISI *si)
94 OSSL_CMP_PKIFREETEXT *ss;
96 if (!ossl_assert(ctx != NULL && si != NULL))
99 if ((ctx->status = ossl_cmp_pkisi_get_status(si)) < 0)
102 ctx->failInfoCode = 0;
103 if (si->failInfo != NULL) {
104 for (i = 0; i <= OSSL_CMP_PKIFAILUREINFO_MAX; i++) {
105 if (ASN1_BIT_STRING_get_bit(si->failInfo, i))
106 ctx->failInfoCode |= (1 << i);
110 if (!ossl_cmp_ctx_set0_statusString(ctx, sk_ASN1_UTF8STRING_new_null())
111 || (ctx->statusString == NULL))
114 ss = si->statusString; /* may be NULL */
115 for (i = 0; i < sk_ASN1_UTF8STRING_num(ss); i++) {
116 ASN1_UTF8STRING *str = sk_ASN1_UTF8STRING_value(ss, i);
118 if (!sk_ASN1_UTF8STRING_push(ctx->statusString, ASN1_STRING_dup(str)))
125 * Perform the generic aspects of sending a request and receiving a response.
126 * Returns 1 on success and provides the received PKIMESSAGE in *rep.
127 * Returns 0 on error.
128 * Regardless of success, caller is responsible for freeing *rep (unless NULL).
130 static int send_receive_check(OSSL_CMP_CTX *ctx, const OSSL_CMP_MSG *req,
131 OSSL_CMP_MSG **rep, int expected_type)
133 const char *req_type_str =
134 ossl_cmp_bodytype_to_string(ossl_cmp_msg_get_bodytype(req));
135 const char *expected_type_str = ossl_cmp_bodytype_to_string(expected_type);
138 time_t now = time(NULL);
140 OSSL_CMP_transfer_cb_t transfer_cb = ctx->transfer_cb;
142 if (transfer_cb == NULL)
143 transfer_cb = OSSL_CMP_MSG_http_perform;
146 msg_timeout = ctx->msg_timeout; /* backup original value */
147 if ((IS_CREP(expected_type) || expected_type == OSSL_CMP_PKIBODY_POLLREP)
148 && ctx->total_timeout > 0 /* timeout is not infinite */) {
149 if (now >= ctx->end_time) {
150 CMPerr(0, CMP_R_TOTAL_TIMEOUT);
153 if (!ossl_assert(ctx->end_time - time(NULL) < INT_MAX)) {
154 /* cannot really happen due to the assignment in do_certreq_seq() */
155 CMPerr(0, CMP_R_INVALID_ARGS);
158 time_left = (int)(ctx->end_time - now);
159 if (ctx->msg_timeout == 0 || time_left < ctx->msg_timeout)
160 ctx->msg_timeout = time_left;
163 /* should print error queue since transfer_cb may call ERR_clear_error() */
164 OSSL_CMP_CTX_print_errors(ctx);
166 ossl_cmp_log1(INFO, ctx, "sending %s", req_type_str);
168 *rep = (*transfer_cb)(ctx, req);
169 ctx->msg_timeout = msg_timeout; /* restore original value */
172 CMPerr(0, CMP_R_TRANSFER_ERROR); /* or receiving response */
173 ERR_add_error_data(1, req_type_str);
174 ERR_add_error_data(2, ", expected response: ", expected_type_str);
178 bt = ossl_cmp_msg_get_bodytype(*rep);
180 * The body type in the 'bt' variable is not yet verified.
181 * Still we use this preliminary value already for a progress report because
182 * the following msg verification may also produce log entries and may fail.
184 ossl_cmp_log1(INFO, ctx, "received %s", ossl_cmp_bodytype_to_string(bt));
186 if ((bt = ossl_cmp_msg_check_received(ctx, *rep, unprotected_exception,
190 if (bt == expected_type
191 /* as an answer to polling, there could be IP/CP/KUP: */
192 || (IS_CREP(bt) && expected_type == OSSL_CMP_PKIBODY_POLLREP))
195 /* received message type is not one of the expected ones (e.g., error) */
196 CMPerr(0, bt == OSSL_CMP_PKIBODY_ERROR ? CMP_R_RECEIVED_ERROR :
197 CMP_R_UNEXPECTED_PKIBODY); /* in next line for mkerr.pl */
199 if (bt != OSSL_CMP_PKIBODY_ERROR) {
200 ERR_add_error_data(3, "message type is '",
201 ossl_cmp_bodytype_to_string(bt), "'");
203 OSSL_CMP_ERRORMSGCONTENT *emc = (*rep)->body->value.error;
204 OSSL_CMP_PKISI *si = emc->pKIStatusInfo;
205 char buf[OSSL_CMP_PKISI_BUFLEN];
207 if (save_statusInfo(ctx, si)
208 && OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, sizeof(buf)) != NULL)
209 ERR_add_error_data(1, buf);
210 if (emc->errorCode != NULL
211 && BIO_snprintf(buf, sizeof(buf), "; errorCode: %ld",
212 ASN1_INTEGER_get(emc->errorCode)) > 0)
213 ERR_add_error_data(1, buf);
214 if (emc->errorDetails != NULL) {
215 char *text = sk_ASN1_UTF8STRING2text(emc->errorDetails, ", ",
216 OSSL_CMP_PKISI_BUFLEN - 1);
219 ERR_add_error_data(2, "; errorDetails: ", text);
222 if (ctx->status != OSSL_CMP_PKISTATUS_rejection) {
223 CMPerr(0, CMP_R_UNEXPECTED_PKISTATUS);
224 if (ctx->status == OSSL_CMP_PKISTATUS_waiting)
225 ctx->status = OSSL_CMP_PKISTATUS_rejection;
232 * When a 'waiting' PKIStatus has been received, this function is used to
233 * poll, which should yield a pollRep or finally a CertRepMessage in ip/cp/kup.
234 * On receiving a pollRep, which includes a checkAfter value, it return this
235 * value if sleep == 0, else it sleeps as long as indicated and retries.
237 * A transaction timeout is enabled if ctx->total_timeout is > 0.
238 * In this case polling will continue until the timeout is reached and then
239 * polling is done a last time even if this is before the "checkAfter" time.
241 * Returns -1 on receiving pollRep if sleep == 0, setting the checkAfter value.
242 * Returns 1 on success and provides the received PKIMESSAGE in *rep.
243 * In this case the caller is responsible for freeing *rep.
244 * Returns 0 on error (which includes the case that timeout has been reached).
246 static int poll_for_response(OSSL_CMP_CTX *ctx, int sleep, int rid,
247 OSSL_CMP_MSG **rep, int *checkAfter)
249 OSSL_CMP_MSG *preq = NULL;
250 OSSL_CMP_MSG *prep = NULL;
253 "received 'waiting' PKIStatus, starting to poll for response");
256 /* TODO: handle potentially multiple poll requests per message */
257 if ((preq = ossl_cmp_pollReq_new(ctx, rid)) == NULL)
260 if (!send_receive_check(ctx, preq, &prep, OSSL_CMP_PKIBODY_POLLREP))
263 /* handle potential pollRep */
264 if (ossl_cmp_msg_get_bodytype(prep) == OSSL_CMP_PKIBODY_POLLREP) {
265 OSSL_CMP_POLLREPCONTENT *prc = prep->body->value.pollRep;
266 OSSL_CMP_POLLREP *pollRep = NULL;
268 char str[OSSL_CMP_PKISI_BUFLEN];
271 /* TODO: handle potentially multiple elements in pollRep */
272 if (sk_OSSL_CMP_POLLREP_num(prc) > 1) {
273 CMPerr(0, CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED);
276 pollRep = ossl_cmp_pollrepcontent_get0_pollrep(prc, rid);
280 if (!ASN1_INTEGER_get_int64(&check_after, pollRep->checkAfter)) {
281 CMPerr(0, CMP_R_BAD_CHECKAFTER_IN_POLLREP);
284 if (check_after < 0 || (uint64_t)check_after
285 > (sleep ? ULONG_MAX / 1000 : INT_MAX)) {
286 CMPerr(0, CMP_R_CHECKAFTER_OUT_OF_RANGE);
287 if (BIO_snprintf(str, OSSL_CMP_PKISI_BUFLEN, "value = %jd",
289 ERR_add_error_data(1, str);
292 if (ctx->total_timeout > 0) { /* timeout is not infinite */
293 const int exp = 5; /* expected max time per msg round trip */
294 int64_t time_left = (int64_t)(ctx->end_time - exp - time(NULL));
296 if (time_left <= 0) {
297 CMPerr(0, CMP_R_TOTAL_TIMEOUT);
300 if (time_left < check_after)
301 check_after = time_left;
302 /* poll one last time just when timeout was reached */
305 if (pollRep->reason == NULL
306 || (len = BIO_snprintf(str, OSSL_CMP_PKISI_BUFLEN,
307 " with reason = '")) < 0) {
310 char *text = sk_ASN1_UTF8STRING2text(pollRep->reason, ", ",
311 sizeof(str) - len - 2);
314 || BIO_snprintf(str + len, sizeof(str) - len,
319 ossl_cmp_log2(INFO, ctx,
320 "received polling response%s; checkAfter = %ld seconds",
323 OSSL_CMP_MSG_free(preq);
325 OSSL_CMP_MSG_free(prep);
328 ossl_sleep((unsigned long)(1000 * check_after));
330 if (checkAfter != NULL)
331 *checkAfter = (int)check_after;
332 return -1; /* exits the loop */
335 ossl_cmp_info(ctx, "received ip/cp/kup after polling");
336 /* any other body type has been rejected by send_receive_check() */
343 OSSL_CMP_MSG_free(preq);
348 OSSL_CMP_MSG_free(preq);
349 OSSL_CMP_MSG_free(prep);
353 /* Send certConf for IR, CR or KUR sequences and check response */
354 int ossl_cmp_exchange_certConf(OSSL_CMP_CTX *ctx, int fail_info,
357 OSSL_CMP_MSG *certConf;
358 OSSL_CMP_MSG *PKIconf = NULL;
361 /* OSSL_CMP_certConf_new() also checks if all necessary options are set */
362 if ((certConf = ossl_cmp_certConf_new(ctx, fail_info, txt)) == NULL)
365 res = send_receive_check(ctx, certConf, &PKIconf, OSSL_CMP_PKIBODY_PKICONF);
368 OSSL_CMP_MSG_free(certConf);
369 OSSL_CMP_MSG_free(PKIconf);
373 /* Send given error and check response */
374 int ossl_cmp_exchange_error(OSSL_CMP_CTX *ctx, int status, int fail_info,
375 const char *txt, int errorCode, const char *details)
377 OSSL_CMP_MSG *error = NULL;
378 OSSL_CMP_PKISI *si = NULL;
379 OSSL_CMP_MSG *PKIconf = NULL;
382 if ((si = OSSL_CMP_STATUSINFO_new(status, fail_info, txt)) == NULL)
384 /* ossl_cmp_error_new() also checks if all necessary options are set */
385 if ((error = ossl_cmp_error_new(ctx, si, errorCode, details, 0)) == NULL)
388 res = send_receive_check(ctx, error, &PKIconf, OSSL_CMP_PKIBODY_PKICONF);
391 OSSL_CMP_MSG_free(error);
392 OSSL_CMP_PKISI_free(si);
393 OSSL_CMP_MSG_free(PKIconf);
398 * Retrieve a copy of the certificate, if any, from the given CertResponse.
399 * Take into account PKIStatusInfo of CertResponse in ctx, report it on error.
400 * Returns NULL if not found or on error.
402 static X509 *get1_cert_status(OSSL_CMP_CTX *ctx, int bodytype,
403 OSSL_CMP_CERTRESPONSE *crep)
405 char buf[OSSL_CMP_PKISI_BUFLEN];
409 if (!ossl_assert(ctx != NULL && crep != NULL))
412 privkey = OSSL_CMP_CTX_get0_newPkey(ctx, 1);
413 switch (ossl_cmp_pkisi_get_status(crep->status)) {
414 case OSSL_CMP_PKISTATUS_waiting:
416 "received \"waiting\" status for cert when actually aiming to extract cert");
417 CMPerr(0, CMP_R_ENCOUNTERED_WAITING);
419 case OSSL_CMP_PKISTATUS_grantedWithMods:
420 ossl_cmp_warn(ctx, "received \"grantedWithMods\" for certificate");
421 crt = ossl_cmp_certresponse_get1_certificate(privkey, crep);
423 case OSSL_CMP_PKISTATUS_accepted:
424 crt = ossl_cmp_certresponse_get1_certificate(privkey, crep);
426 /* get all information in case of a rejection before going to error */
427 case OSSL_CMP_PKISTATUS_rejection:
428 ossl_cmp_err(ctx, "received \"rejection\" status rather than cert");
429 CMPerr(0, CMP_R_REQUEST_REJECTED_BY_SERVER);
431 case OSSL_CMP_PKISTATUS_revocationWarning:
433 "received \"revocationWarning\" - a revocation of the cert is imminent");
434 crt = ossl_cmp_certresponse_get1_certificate(privkey, crep);
436 case OSSL_CMP_PKISTATUS_revocationNotification:
438 "received \"revocationNotification\" - a revocation of the cert has occurred");
439 crt = ossl_cmp_certresponse_get1_certificate(privkey, crep);
441 case OSSL_CMP_PKISTATUS_keyUpdateWarning:
442 if (bodytype != OSSL_CMP_PKIBODY_KUR) {
443 CMPerr(0, CMP_R_ENCOUNTERED_KEYUPDATEWARNING);
446 crt = ossl_cmp_certresponse_get1_certificate(privkey, crep);
449 ossl_cmp_log1(ERROR, ctx,
450 "received unsupported PKIStatus %d for certificate",
452 CMPerr(0, CMP_R_UNKNOWN_PKISTATUS);
455 if (crt == NULL) /* according to PKIStatus, we can expect a cert */
456 CMPerr(0, CMP_R_CERTIFICATE_NOT_FOUND);
461 if (OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, sizeof(buf)) != NULL)
462 ERR_add_error_data(1, buf);
467 * Callback fn validating that the new certificate can be verified, using
468 * ctx->certConf_cb_arg, which has been initialized using opt_out_trusted, and
469 * ctx->untrusted_certs, which at this point already contains ctx->extraCertsIn.
470 * Returns 0 on acceptance, else a bit field reflecting PKIFailureInfo.
471 * Quoting from RFC 4210 section 5.1. Overall PKI Message:
472 * The extraCerts field can contain certificates that may be useful to
473 * the recipient. For example, this can be used by a CA or RA to
474 * present an end entity with certificates that it needs to verify its
475 * own new certificate (if, for example, the CA that issued the end
476 * entity's certificate is not a root CA for the end entity). Note that
477 * this field does not necessarily contain a certification path; the
478 * recipient may have to sort, select from, or otherwise process the
479 * extra certificates in order to use them.
480 * Note: While often handy, there is no hard requirement by CMP that
481 * an EE must be able to validate the certificates it gets enrolled.
483 int OSSL_CMP_certConf_cb(OSSL_CMP_CTX *ctx, X509 *cert, int fail_info,
486 X509_STORE *out_trusted = OSSL_CMP_CTX_get_certConf_cb_arg(ctx);
487 (void)text; /* make (artificial) use of var to prevent compiler warning */
489 if (fail_info != 0) /* accept any error flagged by CMP core library */
492 if (out_trusted != NULL
493 && !OSSL_CMP_validate_cert_path(ctx, out_trusted, cert))
494 fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_incorrectData;
500 * Perform the generic handling of certificate responses for IR/CR/KUR/P10CR.
501 * Returns -1 on receiving pollRep if sleep == 0, setting the checkAfter value.
502 * Returns 1 on success and provides the received PKIMESSAGE in *resp.
503 * Returns 0 on error (which includes the case that timeout has been reached).
504 * Regardless of success, caller is responsible for freeing *resp (unless NULL).
506 static int cert_response(OSSL_CMP_CTX *ctx, int sleep, int rid,
507 OSSL_CMP_MSG **resp, int *checkAfter,
508 int req_type, int expected_type)
510 EVP_PKEY *rkey = OSSL_CMP_CTX_get0_newPkey(ctx /* may be NULL */, 0);
511 int fail_info = 0; /* no failure */
512 const char *txt = NULL;
513 OSSL_CMP_CERTREPMESSAGE *crepmsg;
514 OSSL_CMP_CERTRESPONSE *crep;
520 crepmsg = (*resp)->body->value.ip; /* same for cp and kup */
521 if (sk_OSSL_CMP_CERTRESPONSE_num(crepmsg->response) > 1) {
522 CMPerr(0, CMP_R_MULTIPLE_RESPONSES_NOT_SUPPORTED);
525 /* TODO: handle potentially multiple CertResponses in CertRepMsg */
526 crep = ossl_cmp_certrepmessage_get0_certresponse(crepmsg, rid);
529 if (!save_statusInfo(ctx, crep->status))
532 /* for OSSL_CMP_PKIBODY_P10CR learn CertReqId from response */
533 rid = ossl_cmp_asn1_get_int(crep->certReqId);
535 CMPerr(0, CMP_R_BAD_REQUEST_ID);
540 if (ossl_cmp_pkisi_get_status(crep->status) == OSSL_CMP_PKISTATUS_waiting) {
541 OSSL_CMP_MSG_free(*resp);
543 if ((ret = poll_for_response(ctx, sleep, rid, resp, checkAfter)) != 0) {
544 if (ret == -1) /* at this point implies sleep == 0 */
545 return ret; /* waiting */
546 goto retry; /* got ip/cp/kup, which may still indicate 'waiting' */
548 CMPerr(0, CMP_R_POLLING_FAILED);
553 cert = get1_cert_status(ctx, (*resp)->body->type, crep);
555 ERR_add_error_data(1, "; cannot extract certificate from response");
558 if (!ossl_cmp_ctx_set0_newCert(ctx, cert))
562 * if the CMP server returned certificates in the caPubs field, copy them
563 * to the context so that they can be retrieved if necessary
565 if (crepmsg->caPubs != NULL
566 && !ossl_cmp_ctx_set1_caPubs(ctx, crepmsg->caPubs))
569 /* copy received extraCerts to ctx->extraCertsIn so they can be retrieved */
570 if (!ossl_cmp_ctx_set1_extraCertsIn(ctx, (*resp)->extraCerts))
573 subj = X509_NAME_oneline(X509_get_subject_name(cert), NULL, 0);
575 /* X509_check_private_key() also works if rkey is just public key */
576 && !(X509_check_private_key(ctx->newCert, rkey))) {
577 fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_incorrectData;
578 txt = "public key in new certificate does not match our enrollment key";
580 * not callling (void)ossl_cmp_exchange_error(ctx,
581 * OSSL_CMP_PKISTATUS_rejection, fail_info, txt)
582 * not throwing CMP_R_CERTIFICATE_NOT_ACCEPTED with txt
584 * since we better leave this for any ctx->certConf_cb to decide
589 * Execute the certification checking callback function possibly set in ctx,
590 * which can determine whether to accept a newly enrolled certificate.
591 * It may overrule the pre-decision reflected in 'fail_info' and '*txt'.
594 && (fail_info = ctx->certConf_cb(ctx, ctx->newCert,
595 fail_info, &txt)) != 0) {
597 txt = "CMP client application did not accept it";
599 if (fail_info != 0) /* immediately log error before any certConf exchange */
600 ossl_cmp_log1(ERROR, ctx,
601 "rejecting newly enrolled cert with subject: %s", subj);
604 * TODO: better move certConf exchange to do_certreq_seq() such that
605 * also more low-level errors with CertReqMessages get reported to server
607 if (!ctx->disableConfirm
608 && !ossl_cmp_hdr_has_implicitConfirm((*resp)->header)) {
609 if (!ossl_cmp_exchange_certConf(ctx, fail_info, txt))
613 /* not throwing failure earlier as transfer_cb may call ERR_clear_error() */
614 if (fail_info != 0) {
615 CMPerr(0, CMP_R_CERTIFICATE_NOT_ACCEPTED);
616 ERR_add_error_data(2, "rejecting newly enrolled cert with subject: ",
619 ERR_add_error_txt("; ", txt);
626 int OSSL_CMP_try_certreq(OSSL_CMP_CTX *ctx, int req_type, int *checkAfter)
628 OSSL_CMP_MSG *req = NULL;
629 OSSL_CMP_MSG *rep = NULL;
630 int is_p10 = req_type == OSSL_CMP_PKIBODY_P10CR;
631 int rid = is_p10 ? -1 : OSSL_CMP_CERTREQID;
632 int rep_type = is_p10 ? OSSL_CMP_PKIBODY_CP : req_type + 1;
636 CMPerr(0, CMP_R_NULL_ARGUMENT);
640 if (ctx->status != OSSL_CMP_PKISTATUS_waiting) { /* not polling already */
642 if (!ossl_cmp_ctx_set0_newCert(ctx, NULL))
645 if (ctx->total_timeout > 0) /* else ctx->end_time is not used */
646 ctx->end_time = time(NULL) + ctx->total_timeout;
648 req = ossl_cmp_certReq_new(ctx, req_type, 0 /* req_err */);
649 if (req == NULL) /* also checks if all necessary options are set */
652 if (!send_receive_check(ctx, req, &rep, rep_type))
656 return ossl_cmp_exchange_error(ctx, OSSL_CMP_PKISTATUS_rejection,
657 0 /* TODO better fail_info value? */,
658 "polling aborted", 0 /* errorCode */,
660 res = poll_for_response(ctx, 0 /* no sleep */, rid, &rep, checkAfter);
661 if (res <= 0) /* waiting or error */
664 res = cert_response(ctx, 0 /* no sleep */, rid, &rep, checkAfter,
668 OSSL_CMP_MSG_free(req);
669 OSSL_CMP_MSG_free(rep);
674 * Do the full sequence CR/IR/KUR/P10CR, CP/IP/KUP/CP,
675 * certConf, PKIconf, and polling if required.
676 * Will sleep as long as indicated by the server (according to checkAfter).
677 * All enrollment options need to be present in the context.
678 * TODO: another function to request two certificates at once should be created.
679 * Returns pointer to received certificate, or NULL if none was received.
681 static X509 *do_certreq_seq(OSSL_CMP_CTX *ctx, int req_type, int req_err,
684 OSSL_CMP_MSG *req = NULL;
685 OSSL_CMP_MSG *rep = NULL;
686 int rid = (req_type == OSSL_CMP_PKIBODY_P10CR) ? -1 : OSSL_CMP_CERTREQID;
690 CMPerr(0, CMP_R_NULL_ARGUMENT);
694 if (!ossl_cmp_ctx_set0_newCert(ctx, NULL))
697 if (ctx->total_timeout > 0) /* else ctx->end_time is not used */
698 ctx->end_time = time(NULL) + ctx->total_timeout;
700 /* OSSL_CMP_certreq_new() also checks if all necessary options are set */
701 if ((req = ossl_cmp_certReq_new(ctx, req_type, req_err)) == NULL)
704 if (!send_receive_check(ctx, req, &rep, rep_type))
707 if (cert_response(ctx, 1 /* sleep */, rid, &rep, NULL, req_type, rep_type)
711 result = ctx->newCert;
713 OSSL_CMP_MSG_free(req);
714 OSSL_CMP_MSG_free(rep);
718 X509 *OSSL_CMP_exec_IR_ses(OSSL_CMP_CTX *ctx)
720 return do_certreq_seq(ctx, OSSL_CMP_PKIBODY_IR,
721 CMP_R_ERROR_CREATING_IR, OSSL_CMP_PKIBODY_IP);
724 X509 *OSSL_CMP_exec_CR_ses(OSSL_CMP_CTX *ctx)
726 return do_certreq_seq(ctx, OSSL_CMP_PKIBODY_CR,
727 CMP_R_ERROR_CREATING_CR, OSSL_CMP_PKIBODY_CP);
730 X509 *OSSL_CMP_exec_KUR_ses(OSSL_CMP_CTX *ctx)
732 return do_certreq_seq(ctx, OSSL_CMP_PKIBODY_KUR,
733 CMP_R_ERROR_CREATING_KUR, OSSL_CMP_PKIBODY_KUP);
736 X509 *OSSL_CMP_exec_P10CR_ses(OSSL_CMP_CTX *ctx)
738 return do_certreq_seq(ctx, OSSL_CMP_PKIBODY_P10CR,
739 CMP_R_ERROR_CREATING_P10CR, OSSL_CMP_PKIBODY_CP);
742 X509 *OSSL_CMP_exec_RR_ses(OSSL_CMP_CTX *ctx)
744 OSSL_CMP_MSG *rr = NULL;
745 OSSL_CMP_MSG *rp = NULL;
746 const int num_RevDetails = 1;
747 const int rsid = OSSL_CMP_REVREQSID;
748 OSSL_CMP_REVREPCONTENT *rrep = NULL;
749 OSSL_CMP_PKISI *si = NULL;
750 char buf[OSSL_CMP_PKISI_BUFLEN];
754 CMPerr(0, CMP_R_INVALID_ARGS);
757 if (ctx->oldCert == NULL) {
758 CMPerr(0, CMP_R_MISSING_REFERENCE_CERT);
763 /* OSSL_CMP_rr_new() also checks if all necessary options are set */
764 if ((rr = ossl_cmp_rr_new(ctx)) == NULL)
767 if (!send_receive_check(ctx, rr, &rp, OSSL_CMP_PKIBODY_RP))
770 rrep = rp->body->value.rp;
771 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
772 if (sk_OSSL_CMP_PKISI_num(rrep->status) != num_RevDetails) {
773 CMPerr(0, CMP_R_WRONG_RP_COMPONENT_COUNT);
777 if (sk_OSSL_CMP_PKISI_num(rrep->status) < 1) {
778 CMPerr(0, CMP_R_WRONG_RP_COMPONENT_COUNT);
783 /* evaluate PKIStatus field */
784 si = ossl_cmp_revrepcontent_get_pkisi(rrep, rsid);
785 if (!save_statusInfo(ctx, si))
787 switch (ossl_cmp_pkisi_get_status(si)) {
788 case OSSL_CMP_PKISTATUS_accepted:
789 ossl_cmp_info(ctx, "revocation accepted (PKIStatus=accepted)");
790 result = ctx->oldCert;
792 case OSSL_CMP_PKISTATUS_grantedWithMods:
793 ossl_cmp_info(ctx, "revocation accepted (PKIStatus=grantedWithMods)");
794 result = ctx->oldCert;
796 case OSSL_CMP_PKISTATUS_rejection:
797 CMPerr(0, CMP_R_REQUEST_REJECTED_BY_SERVER);
799 case OSSL_CMP_PKISTATUS_revocationWarning:
800 ossl_cmp_info(ctx, "revocation accepted (PKIStatus=revocationWarning)");
801 result = ctx->oldCert;
803 case OSSL_CMP_PKISTATUS_revocationNotification:
804 /* interpretation as warning or error depends on CA */
806 "revocation accepted (PKIStatus=revocationNotification)");
807 result = ctx->oldCert;
809 case OSSL_CMP_PKISTATUS_waiting:
810 case OSSL_CMP_PKISTATUS_keyUpdateWarning:
811 CMPerr(0, CMP_R_UNEXPECTED_PKISTATUS);
814 CMPerr(0, CMP_R_UNKNOWN_PKISTATUS);
818 /* check any present CertId in optional revCerts field */
819 if (rrep->revCerts != NULL) {
820 OSSL_CRMF_CERTID *cid;
821 OSSL_CRMF_CERTTEMPLATE *tmpl =
822 sk_OSSL_CMP_REVDETAILS_value(rr->body->value.rr, rsid)->certDetails;
823 const X509_NAME *issuer = OSSL_CRMF_CERTTEMPLATE_get0_issuer(tmpl);
824 ASN1_INTEGER *serial = OSSL_CRMF_CERTTEMPLATE_get0_serialNumber(tmpl);
826 if (sk_OSSL_CRMF_CERTID_num(rrep->revCerts) != num_RevDetails) {
827 CMPerr(0, CMP_R_WRONG_RP_COMPONENT_COUNT);
831 if ((cid = ossl_cmp_revrepcontent_get_CertId(rrep, rsid)) == NULL) {
835 if (X509_NAME_cmp(issuer, OSSL_CRMF_CERTID_get0_issuer(cid)) != 0) {
836 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
837 CMPerr(0, CMP_R_WRONG_CERTID_IN_RP);
842 if (ASN1_INTEGER_cmp(serial,
843 OSSL_CRMF_CERTID_get0_serialNumber(cid)) != 0) {
844 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
845 CMPerr(0, CMP_R_WRONG_SERIAL_IN_RP);
852 /* check number of any optionally present crls */
853 if (rrep->crls != NULL && sk_X509_CRL_num(rrep->crls) != num_RevDetails) {
854 CMPerr(0, CMP_R_WRONG_RP_COMPONENT_COUNT);
861 && OSSL_CMP_CTX_snprint_PKIStatus(ctx, buf, sizeof(buf)) != NULL)
862 ERR_add_error_data(1, buf);
865 OSSL_CMP_MSG_free(rr);
866 OSSL_CMP_MSG_free(rp);
870 STACK_OF(OSSL_CMP_ITAV) *OSSL_CMP_exec_GENM_ses(OSSL_CMP_CTX *ctx)
873 OSSL_CMP_MSG *genp = NULL;
874 STACK_OF(OSSL_CMP_ITAV) *rcvd_itavs = NULL;
877 CMPerr(0, CMP_R_INVALID_ARGS);
881 if ((genm = ossl_cmp_genm_new(ctx)) == NULL)
884 if (!send_receive_check(ctx, genm, &genp, OSSL_CMP_PKIBODY_GENP))
887 /* received stack of itavs not to be freed with the genp */
888 rcvd_itavs = genp->body->value.genp;
889 genp->body->value.genp = NULL;
892 OSSL_CMP_MSG_free(genm);
893 OSSL_CMP_MSG_free(genp);
895 return rcvd_itavs; /* recv_itavs == NULL indicates an error */