2 * Copyright 2007-2023 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 /* general CMP server functions */
14 #include <openssl/asn1t.h>
16 #include "cmp_local.h"
18 /* explicit #includes not strictly needed since implied by the above: */
19 #include <openssl/cmp.h>
20 #include <openssl/err.h>
22 /* the context for the generic CMP server */
23 struct ossl_cmp_srv_ctx_st
25 OSSL_CMP_CTX *ctx; /* CMP client context reused for transactionID etc. */
26 void *custom_ctx; /* application-specific server context */
27 int certReqId; /* of ir/cr/kur, OSSL_CMP_CERTREQID_NONE for p10cr */
28 int polling; /* current transaction is in polling mode */
30 OSSL_CMP_SRV_cert_request_cb_t process_cert_request;
31 OSSL_CMP_SRV_rr_cb_t process_rr;
32 OSSL_CMP_SRV_genm_cb_t process_genm;
33 OSSL_CMP_SRV_error_cb_t process_error;
34 OSSL_CMP_SRV_certConf_cb_t process_certConf;
35 OSSL_CMP_SRV_pollReq_cb_t process_pollReq;
36 OSSL_CMP_SRV_delayed_delivery_cb_t delayed_delivery;
37 OSSL_CMP_SRV_clean_transaction_cb_t clean_transaction;
39 int sendUnprotectedErrors; /* Send error and rejection msgs unprotected */
40 int acceptUnprotected; /* Accept requests with no/invalid prot. */
41 int acceptRAVerified; /* Accept ir/cr/kur with POPO RAVerified */
42 int grantImplicitConfirm; /* Grant implicit confirmation if requested */
44 }; /* OSSL_CMP_SRV_CTX */
46 void OSSL_CMP_SRV_CTX_free(OSSL_CMP_SRV_CTX *srv_ctx)
51 OSSL_CMP_CTX_free(srv_ctx->ctx);
52 OPENSSL_free(srv_ctx);
55 OSSL_CMP_SRV_CTX *OSSL_CMP_SRV_CTX_new(OSSL_LIB_CTX *libctx, const char *propq)
57 OSSL_CMP_SRV_CTX *ctx = OPENSSL_zalloc(sizeof(OSSL_CMP_SRV_CTX));
62 if ((ctx->ctx = OSSL_CMP_CTX_new(libctx, propq)) == NULL)
64 ctx->certReqId = OSSL_CMP_CERTREQID_INVALID;
67 /* all other elements are initialized to 0 or NULL, respectively */
70 OSSL_CMP_SRV_CTX_free(ctx);
74 int OSSL_CMP_SRV_CTX_init(OSSL_CMP_SRV_CTX *srv_ctx, void *custom_ctx,
75 OSSL_CMP_SRV_cert_request_cb_t process_cert_request,
76 OSSL_CMP_SRV_rr_cb_t process_rr,
77 OSSL_CMP_SRV_genm_cb_t process_genm,
78 OSSL_CMP_SRV_error_cb_t process_error,
79 OSSL_CMP_SRV_certConf_cb_t process_certConf,
80 OSSL_CMP_SRV_pollReq_cb_t process_pollReq)
82 if (srv_ctx == NULL) {
83 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
86 srv_ctx->custom_ctx = custom_ctx;
87 srv_ctx->process_cert_request = process_cert_request;
88 srv_ctx->process_rr = process_rr;
89 srv_ctx->process_genm = process_genm;
90 srv_ctx->process_error = process_error;
91 srv_ctx->process_certConf = process_certConf;
92 srv_ctx->process_pollReq = process_pollReq;
96 int OSSL_CMP_SRV_CTX_init_trans(OSSL_CMP_SRV_CTX *srv_ctx,
97 OSSL_CMP_SRV_delayed_delivery_cb_t delay,
98 OSSL_CMP_SRV_clean_transaction_cb_t clean)
100 if (srv_ctx == NULL) {
101 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
104 srv_ctx->delayed_delivery = delay;
105 srv_ctx->clean_transaction = clean;
109 OSSL_CMP_CTX *OSSL_CMP_SRV_CTX_get0_cmp_ctx(const OSSL_CMP_SRV_CTX *srv_ctx)
111 if (srv_ctx == NULL) {
112 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
118 void *OSSL_CMP_SRV_CTX_get0_custom_ctx(const OSSL_CMP_SRV_CTX *srv_ctx)
120 if (srv_ctx == NULL) {
121 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
124 return srv_ctx->custom_ctx;
127 int OSSL_CMP_SRV_CTX_set_send_unprotected_errors(OSSL_CMP_SRV_CTX *srv_ctx,
130 if (srv_ctx == NULL) {
131 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
134 srv_ctx->sendUnprotectedErrors = val != 0;
138 int OSSL_CMP_SRV_CTX_set_accept_unprotected(OSSL_CMP_SRV_CTX *srv_ctx, int val)
140 if (srv_ctx == NULL) {
141 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
144 srv_ctx->acceptUnprotected = val != 0;
148 int OSSL_CMP_SRV_CTX_set_accept_raverified(OSSL_CMP_SRV_CTX *srv_ctx, int val)
150 if (srv_ctx == NULL) {
151 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
154 srv_ctx->acceptRAVerified = val != 0;
158 int OSSL_CMP_SRV_CTX_set_grant_implicit_confirm(OSSL_CMP_SRV_CTX *srv_ctx,
161 if (srv_ctx == NULL) {
162 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
165 srv_ctx->grantImplicitConfirm = val != 0;
169 /* return error msg with waiting status if polling is initiated, else NULL */
170 static OSSL_CMP_MSG *delayed_delivery(OSSL_CMP_SRV_CTX *srv_ctx,
171 const OSSL_CMP_MSG *req)
175 int status = OSSL_CMP_PKISTATUS_waiting,
176 fail_info = 0, errorCode = 0;
177 const char *txt = NULL, *details = NULL;
181 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL
182 && srv_ctx->delayed_delivery != NULL))
185 ret = srv_ctx->delayed_delivery(srv_ctx, req);
189 srv_ctx->polling = 1;
191 status = OSSL_CMP_PKISTATUS_rejection;
192 fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_systemFailure;
193 txt = "server application error";
194 err = ERR_peek_error();
195 errorCode = ERR_GET_REASON(err);
196 details = ERR_reason_error_string(err);
199 si = OSSL_CMP_STATUSINFO_new(status, fail_info, txt);
203 msg = ossl_cmp_error_new(srv_ctx->ctx, si, errorCode, details,
204 srv_ctx->sendUnprotectedErrors);
205 OSSL_CMP_PKISI_free(si);
210 * Processes an ir/cr/p10cr/kur and returns a certification response.
211 * Only handles the first certification request contained in req
212 * returns an ip/cp/kup on success and NULL on error
214 static OSSL_CMP_MSG *process_cert_request(OSSL_CMP_SRV_CTX *srv_ctx,
215 const OSSL_CMP_MSG *req)
217 OSSL_CMP_MSG *msg = NULL;
218 OSSL_CMP_PKISI *si = NULL;
219 X509 *certOut = NULL;
220 STACK_OF(X509) *chainOut = NULL, *caPubs = NULL;
221 const OSSL_CRMF_MSG *crm = NULL;
222 const X509_REQ *p10cr = NULL;
226 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
229 switch (OSSL_CMP_MSG_get_bodytype(req)) {
230 case OSSL_CMP_PKIBODY_P10CR:
231 case OSSL_CMP_PKIBODY_CR:
232 bodytype = OSSL_CMP_PKIBODY_CP;
234 case OSSL_CMP_PKIBODY_IR:
235 bodytype = OSSL_CMP_PKIBODY_IP;
237 case OSSL_CMP_PKIBODY_KUR:
238 bodytype = OSSL_CMP_PKIBODY_KUP;
241 ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
245 if (OSSL_CMP_MSG_get_bodytype(req) == OSSL_CMP_PKIBODY_P10CR) {
246 certReqId = OSSL_CMP_CERTREQID_NONE; /* p10cr does not include an Id */
247 p10cr = req->body->value.p10cr;
249 OSSL_CRMF_MSGS *reqs = req->body->value.ir; /* same for cr and kur */
251 if (sk_OSSL_CRMF_MSG_num(reqs) != 1) {
252 ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED);
255 if ((crm = sk_OSSL_CRMF_MSG_value(reqs, 0)) == NULL) {
256 ERR_raise(ERR_LIB_CMP, CMP_R_CERTREQMSG_NOT_FOUND);
259 certReqId = OSSL_CRMF_MSG_get_certReqId(crm);
260 if (certReqId != OSSL_CMP_CERTREQID) { /* so far, only possible value */
261 ERR_raise(ERR_LIB_CMP, CMP_R_BAD_REQUEST_ID);
265 srv_ctx->certReqId = certReqId;
267 if (!ossl_cmp_verify_popo(srv_ctx->ctx, req, srv_ctx->acceptRAVerified)) {
268 /* Proof of possession could not be verified */
269 si = OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_rejection,
270 1 << OSSL_CMP_PKIFAILUREINFO_badPOP,
271 ERR_reason_error_string(ERR_peek_error()));
275 OSSL_CMP_PKIHEADER *hdr = OSSL_CMP_MSG_get0_header(req);
277 si = srv_ctx->process_cert_request(srv_ctx, req, certReqId, crm, p10cr,
278 &certOut, &chainOut, &caPubs);
281 if (ossl_cmp_pkisi_get_status(si) == OSSL_CMP_PKISTATUS_waiting)
282 srv_ctx->polling = 1;
283 /* set OSSL_CMP_OPT_IMPLICIT_CONFIRM if and only if transaction ends */
284 if (!OSSL_CMP_CTX_set_option(srv_ctx->ctx,
285 OSSL_CMP_OPT_IMPLICIT_CONFIRM,
286 ossl_cmp_hdr_has_implicitConfirm(hdr)
287 && srv_ctx->grantImplicitConfirm
288 /* do not set if polling starts: */
293 msg = ossl_cmp_certrep_new(srv_ctx->ctx, bodytype, certReqId, si,
294 certOut, NULL /* enc */, chainOut, caPubs,
295 srv_ctx->sendUnprotectedErrors);
296 /* When supporting OSSL_CRMF_POPO_KEYENC, "enc" will need to be set */
298 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_CERTREP);
301 OSSL_CMP_PKISI_free(si);
303 OSSL_STACK_OF_X509_free(chainOut);
304 OSSL_STACK_OF_X509_free(caPubs);
308 static OSSL_CMP_MSG *process_rr(OSSL_CMP_SRV_CTX *srv_ctx,
309 const OSSL_CMP_MSG *req)
311 OSSL_CMP_MSG *msg = NULL;
312 OSSL_CMP_REVDETAILS *details;
313 OSSL_CRMF_CERTID *certId = NULL;
314 OSSL_CRMF_CERTTEMPLATE *tmpl;
315 const X509_NAME *issuer;
316 const ASN1_INTEGER *serial;
319 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
322 if (sk_OSSL_CMP_REVDETAILS_num(req->body->value.rr) != 1) {
323 ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED);
326 details = sk_OSSL_CMP_REVDETAILS_value(req->body->value.rr, 0);
327 if (details == NULL) {
328 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_PROCESSING_MESSAGE);
332 tmpl = details->certDetails;
333 issuer = OSSL_CRMF_CERTTEMPLATE_get0_issuer(tmpl);
334 serial = OSSL_CRMF_CERTTEMPLATE_get0_serialNumber(tmpl);
335 if (issuer != NULL && serial != NULL
336 && (certId = OSSL_CRMF_CERTID_gen(issuer, serial)) == NULL)
338 if ((si = srv_ctx->process_rr(srv_ctx, req, issuer, serial)) == NULL)
341 if ((msg = ossl_cmp_rp_new(srv_ctx->ctx, si, certId,
342 srv_ctx->sendUnprotectedErrors)) == NULL)
343 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_RR);
346 OSSL_CRMF_CERTID_free(certId);
347 OSSL_CMP_PKISI_free(si);
352 * Processes genm and creates a genp message mirroring the contents of the
355 static OSSL_CMP_MSG *process_genm(OSSL_CMP_SRV_CTX *srv_ctx,
356 const OSSL_CMP_MSG *req)
358 OSSL_CMP_GENMSGCONTENT *itavs;
361 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
364 if (!srv_ctx->process_genm(srv_ctx, req, req->body->value.genm, &itavs))
367 msg = ossl_cmp_genp_new(srv_ctx->ctx, itavs);
368 sk_OSSL_CMP_ITAV_pop_free(itavs, OSSL_CMP_ITAV_free);
372 static OSSL_CMP_MSG *process_error(OSSL_CMP_SRV_CTX *srv_ctx,
373 const OSSL_CMP_MSG *req)
375 OSSL_CMP_ERRORMSGCONTENT *errorContent;
378 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
380 errorContent = req->body->value.error;
381 srv_ctx->process_error(srv_ctx, req, errorContent->pKIStatusInfo,
382 errorContent->errorCode, errorContent->errorDetails);
384 if ((msg = ossl_cmp_pkiconf_new(srv_ctx->ctx)) == NULL)
385 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_PKICONF);
389 static OSSL_CMP_MSG *process_certConf(OSSL_CMP_SRV_CTX *srv_ctx,
390 const OSSL_CMP_MSG *req)
393 OSSL_CMP_CERTCONFIRMCONTENT *ccc;
395 OSSL_CMP_MSG *msg = NULL;
396 OSSL_CMP_CERTSTATUS *status = NULL;
398 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
402 ccc = req->body->value.certConf;
403 num = sk_OSSL_CMP_CERTSTATUS_num(ccc);
405 if (OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_IMPLICIT_CONFIRM) == 1
406 || ctx->status != OSSL_CMP_PKISTATUS_trans) {
407 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_UNEXPECTED_CERTCONF);
412 ossl_cmp_err(ctx, "certificate rejected by client");
415 ossl_cmp_warn(ctx, "All CertStatus but the first will be ignored");
416 status = sk_OSSL_CMP_CERTSTATUS_value(ccc, 0);
419 if (status != NULL) {
420 int certReqId = ossl_cmp_asn1_get_int(status->certReqId);
421 ASN1_OCTET_STRING *certHash = status->certHash;
422 OSSL_CMP_PKISI *si = status->statusInfo;
424 if (certReqId != srv_ctx->certReqId) {
425 ERR_raise(ERR_LIB_CMP, CMP_R_BAD_REQUEST_ID);
428 if (!srv_ctx->process_certConf(srv_ctx, req, certReqId, certHash, si))
429 return NULL; /* reason code may be: CMP_R_CERTHASH_UNMATCHED */
432 && ossl_cmp_pkisi_get_status(si) != OSSL_CMP_PKISTATUS_accepted) {
433 int pki_status = ossl_cmp_pkisi_get_status(si);
434 const char *str = ossl_cmp_PKIStatus_to_string(pki_status);
436 ossl_cmp_log2(INFO, ctx, "certificate rejected by client %s %s",
437 str == NULL ? "without" : "with",
438 str == NULL ? "PKIStatus" : str);
442 if ((msg = ossl_cmp_pkiconf_new(ctx)) == NULL)
443 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_PKICONF);
447 /* pollReq is handled separately, to avoid recursive call */
448 static OSSL_CMP_MSG *process_non_polling_request(OSSL_CMP_SRV_CTX *srv_ctx,
449 const OSSL_CMP_MSG *req)
451 OSSL_CMP_MSG *rsp = NULL;
453 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL
454 && req->body != NULL))
457 switch (OSSL_CMP_MSG_get_bodytype(req)) {
458 case OSSL_CMP_PKIBODY_IR:
459 case OSSL_CMP_PKIBODY_CR:
460 case OSSL_CMP_PKIBODY_P10CR:
461 case OSSL_CMP_PKIBODY_KUR:
462 if (srv_ctx->process_cert_request == NULL)
463 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
465 rsp = process_cert_request(srv_ctx, req);
467 case OSSL_CMP_PKIBODY_RR:
468 if (srv_ctx->process_rr == NULL)
469 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
471 rsp = process_rr(srv_ctx, req);
473 case OSSL_CMP_PKIBODY_GENM:
474 if (srv_ctx->process_genm == NULL)
475 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
477 rsp = process_genm(srv_ctx, req);
479 case OSSL_CMP_PKIBODY_ERROR:
480 if (srv_ctx->process_error == NULL)
481 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
483 rsp = process_error(srv_ctx, req);
485 case OSSL_CMP_PKIBODY_CERTCONF:
486 if (srv_ctx->process_certConf == NULL)
487 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
489 rsp = process_certConf(srv_ctx, req);
492 case OSSL_CMP_PKIBODY_POLLREQ:
493 ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
496 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
503 static OSSL_CMP_MSG *process_pollReq(OSSL_CMP_SRV_CTX *srv_ctx,
504 const OSSL_CMP_MSG *req)
506 OSSL_CMP_POLLREQCONTENT *prc;
507 OSSL_CMP_POLLREQ *pr;
509 OSSL_CMP_MSG *orig_req;
510 int64_t check_after = 0;
511 OSSL_CMP_MSG *msg = NULL;
513 if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL))
516 if (!srv_ctx->polling) {
517 ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
521 prc = req->body->value.pollReq;
522 if (sk_OSSL_CMP_POLLREQ_num(prc) != 1) {
523 ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED);
527 pr = sk_OSSL_CMP_POLLREQ_value(prc, 0);
528 certReqId = ossl_cmp_asn1_get_int(pr->certReqId);
529 if (!srv_ctx->process_pollReq(srv_ctx, req, certReqId,
530 &orig_req, &check_after))
533 if (orig_req != NULL) {
534 srv_ctx->polling = 0;
535 msg = process_non_polling_request(srv_ctx, orig_req);
536 OSSL_CMP_MSG_free(orig_req);
538 if ((msg = ossl_cmp_pollRep_new(srv_ctx->ctx, certReqId,
539 check_after)) == NULL)
540 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_CREATING_POLLREP);
546 * Determine whether missing/invalid protection of request message is allowed.
547 * Return 1 on acceptance, 0 on rejection, or -1 on (internal) error.
549 static int unprotected_exception(const OSSL_CMP_CTX *ctx,
550 const OSSL_CMP_MSG *req,
551 int invalid_protection,
552 int accept_unprotected_requests)
554 if (!ossl_assert(ctx != NULL && req != NULL))
557 if (accept_unprotected_requests) {
558 ossl_cmp_log1(WARN, ctx, "ignoring %s protection of request message",
559 invalid_protection ? "invalid" : "missing");
562 if (OSSL_CMP_MSG_get_bodytype(req) == OSSL_CMP_PKIBODY_ERROR
563 && OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_UNPROTECTED_ERRORS) == 1) {
564 ossl_cmp_warn(ctx, "ignoring missing protection of error message");
571 * returns created message and NULL on internal error
573 OSSL_CMP_MSG *OSSL_CMP_SRV_process_request(OSSL_CMP_SRV_CTX *srv_ctx,
574 const OSSL_CMP_MSG *req)
577 ASN1_OCTET_STRING *backup_secret;
578 OSSL_CMP_PKIHEADER *hdr;
579 int req_type, rsp_type;
580 int req_verified = 0;
581 OSSL_CMP_MSG *rsp = NULL;
583 if (srv_ctx == NULL || srv_ctx->ctx == NULL
584 || req == NULL || req->body == NULL
585 || (hdr = OSSL_CMP_MSG_get0_header(req)) == NULL) {
586 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
590 backup_secret = ctx->secretValue;
591 req_type = OSSL_CMP_MSG_get_bodytype(req);
592 ossl_cmp_log1(DEBUG, ctx,
593 "received %s", ossl_cmp_bodytype_to_string(req_type));
596 * Some things need to be done already before validating the message in
597 * order to be able to send an error message as far as needed and possible.
599 if (hdr->sender->type != GEN_DIRNAME) {
600 ERR_raise(ERR_LIB_CMP, CMP_R_SENDER_GENERALNAME_TYPE_NOT_SUPPORTED);
603 if (!OSSL_CMP_CTX_set1_recipient(ctx, hdr->sender->d.directoryName))
606 if (srv_ctx->polling && req_type != OSSL_CMP_PKIBODY_POLLREQ
607 && req_type != OSSL_CMP_PKIBODY_ERROR) {
608 ERR_raise(ERR_LIB_CMP, CMP_R_EXPECTED_POLLREQ);
613 case OSSL_CMP_PKIBODY_IR:
614 case OSSL_CMP_PKIBODY_CR:
615 case OSSL_CMP_PKIBODY_P10CR:
616 case OSSL_CMP_PKIBODY_KUR:
617 case OSSL_CMP_PKIBODY_RR:
618 case OSSL_CMP_PKIBODY_GENM:
619 case OSSL_CMP_PKIBODY_ERROR:
620 if (ctx->transactionID != NULL) {
621 char *tid = i2s_ASN1_OCTET_STRING(NULL, ctx->transactionID);
624 ossl_cmp_log1(WARN, ctx,
625 "Assuming that last transaction with ID=%s got aborted",
629 /* start of a new transaction, reset transactionID and senderNonce */
630 if (!OSSL_CMP_CTX_set1_transactionID(ctx, NULL)
631 || !OSSL_CMP_CTX_set1_senderNonce(ctx, NULL))
634 if (srv_ctx->clean_transaction != NULL
635 && !srv_ctx->clean_transaction(srv_ctx, NULL)) {
636 ERR_raise(ERR_LIB_CMP, CMP_R_ERROR_PROCESSING_MESSAGE);
642 /* transactionID should be already initialized */
643 if (ctx->transactionID == NULL) {
644 #ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
645 ERR_raise(ERR_LIB_CMP, CMP_R_UNEXPECTED_PKIBODY);
651 req_verified = ossl_cmp_msg_check_update(ctx, req, unprotected_exception,
652 srv_ctx->acceptUnprotected);
653 if (ctx->secretValue != NULL && ctx->pkey != NULL
654 && ossl_cmp_hdr_get_protection_nid(hdr) != NID_id_PasswordBasedMAC)
655 ctx->secretValue = NULL; /* use MSG_SIG_ALG when protecting rsp */
659 if (req_type == OSSL_CMP_PKIBODY_POLLREQ) {
660 if (srv_ctx->process_pollReq == NULL)
661 ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_PKIBODY);
663 rsp = process_pollReq(srv_ctx, req);
665 if (srv_ctx->delayed_delivery != NULL
666 && (rsp = delayed_delivery(srv_ctx, req)) != NULL) {
669 rsp = process_non_polling_request(srv_ctx, req);
674 /* on error, try to respond with CMP error message to client */
675 const char *data = NULL, *reason = NULL;
677 unsigned long err = ERR_peek_error_data(&data, &flags);
678 int fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_badRequest;
679 /* fail_info is not very specific */
680 OSSL_CMP_PKISI *si = NULL;
684 * Above ossl_cmp_msg_check_update() was not successfully executed,
685 * which normally would set ctx->transactionID and ctx->recipNonce.
686 * So anyway try to provide the right transactionID and recipNonce,
687 * while ignoring any (extra) error in next two function calls.
689 if (ctx->transactionID == NULL)
690 (void)OSSL_CMP_CTX_set1_transactionID(ctx, hdr->transactionID);
691 (void)ossl_cmp_ctx_set1_recipNonce(ctx, hdr->senderNonce);
694 if ((flags & ERR_TXT_STRING) == 0 || *data == '\0')
696 reason = ERR_reason_error_string(err);
697 if ((si = OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_rejection,
698 fail_info, reason)) != NULL) {
699 rsp = ossl_cmp_error_new(srv_ctx->ctx, si, err,
700 data, srv_ctx->sendUnprotectedErrors);
701 OSSL_CMP_PKISI_free(si);
704 OSSL_CMP_CTX_print_errors(ctx);
705 ctx->secretValue = backup_secret;
708 rsp != NULL ? OSSL_CMP_MSG_get_bodytype(rsp) : OSSL_CMP_PKIBODY_ERROR;
710 ossl_cmp_log1(DEBUG, ctx,
711 "sending %s", ossl_cmp_bodytype_to_string(rsp_type));
713 ossl_cmp_log(ERR, ctx, "cannot send proper CMP response");
715 /* determine whether to keep the transaction open or not */
716 ctx->status = OSSL_CMP_PKISTATUS_trans;
718 case OSSL_CMP_PKIBODY_IP:
719 case OSSL_CMP_PKIBODY_CP:
720 case OSSL_CMP_PKIBODY_KUP:
721 if (OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_IMPLICIT_CONFIRM) == 0)
725 case OSSL_CMP_PKIBODY_ERROR:
726 if (rsp != NULL && ossl_cmp_is_error_with_waiting(rsp))
730 case OSSL_CMP_PKIBODY_RP:
731 case OSSL_CMP_PKIBODY_PKICONF:
732 case OSSL_CMP_PKIBODY_GENP:
733 /* Other terminating response message types are not supported */
734 srv_ctx->certReqId = OSSL_CMP_CERTREQID_INVALID;
735 /* Prepare for next transaction, ignoring any errors here: */
736 if (srv_ctx->clean_transaction != NULL)
737 (void)srv_ctx->clean_transaction(srv_ctx, ctx->transactionID);
738 (void)OSSL_CMP_CTX_set1_transactionID(ctx, NULL);
739 (void)OSSL_CMP_CTX_set1_senderNonce(ctx, NULL);
740 ctx->status = OSSL_CMP_PKISTATUS_unspecified; /* transaction closed */
742 default: /* not closing transaction in other cases */
749 * Server interface that may substitute OSSL_CMP_MSG_http_perform at the client.
750 * The OSSL_CMP_SRV_CTX must be set as client_ctx->transfer_cb_arg.
751 * returns received message on success, else NULL and pushes an element on the
754 OSSL_CMP_MSG *OSSL_CMP_CTX_server_perform(OSSL_CMP_CTX *client_ctx,
755 const OSSL_CMP_MSG *req)
757 OSSL_CMP_SRV_CTX *srv_ctx = NULL;
759 if (client_ctx == NULL || req == NULL) {
760 ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
764 if ((srv_ctx = OSSL_CMP_CTX_get_transfer_cb_arg(client_ctx)) == NULL) {
765 ERR_raise(ERR_LIB_CMP, CMP_R_TRANSFER_ERROR);
769 return OSSL_CMP_SRV_process_request(srv_ctx, req);