crypto/cmp/cmp_ctx.c

   1 /*
   2  * Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
   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 <openssl/trace.h>
  13 #include <openssl/bio.h>
  14 #include <openssl/ocsp.h> /* for OCSP_REVOKED_STATUS_* */
  15
  16 #include "cmp_local.h"
  17
  18 /* explicit #includes not strictly needed since implied by the above: */
  19 #include <openssl/cmp.h>
  20 #include <openssl/crmf.h>
  21 #include <openssl/err.h>
  22
  23 /*
  24  * Get current certificate store containing trusted root CA certs
  25  */
  26 X509_STORE *OSSL_CMP_CTX_get0_trustedStore(const OSSL_CMP_CTX *ctx)
  27 {
  28     if (ctx == NULL) {
  29         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
  30         return NULL;
  31     }
  32     return ctx->trusted;
  33 }
  34
  35 /*
  36  * Set certificate store containing trusted (root) CA certs and possibly CRLs
  37  * and a cert verification callback function used for CMP server authentication.
  38  * Any already existing store entry is freed. Given NULL, the entry is reset.
  39  */
  40 int OSSL_CMP_CTX_set0_trustedStore(OSSL_CMP_CTX *ctx, X509_STORE *store)
  41 {
  42     if (ctx == NULL) {
  43         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
  44         return 0;
  45     }
  46     X509_STORE_free(ctx->trusted);
  47     ctx->trusted = store;
  48     return 1;
  49 }
  50
  51 /* Get current list of non-trusted intermediate certs */
  52 STACK_OF(X509) *OSSL_CMP_CTX_get0_untrusted(const OSSL_CMP_CTX *ctx)
  53 {
  54     if (ctx == NULL) {
  55         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
  56         return NULL;
  57     }
  58     return ctx->untrusted;
  59 }
  60
  61 /*
  62  * Set untrusted certificates for path construction in authentication of
  63  * the CMP server and potentially others (TLS server, newly enrolled cert).
  64  */
  65 int OSSL_CMP_CTX_set1_untrusted(OSSL_CMP_CTX *ctx, STACK_OF(X509) *certs)
  66 {
  67     STACK_OF(X509) *untrusted = NULL;
  68
  69     if (ctx == NULL) {
  70         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
  71         return 0;
  72     }
  73     if (!ossl_x509_add_certs_new(&untrusted, certs,
  74                                  X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
  75         goto err;
  76     sk_X509_pop_free(ctx->untrusted, X509_free);
  77     ctx->untrusted = untrusted;
  78     return 1;
  79  err:
  80     sk_X509_pop_free(untrusted, X509_free);
  81     return 0;
  82 }
  83
  84 static int cmp_ctx_set_md(OSSL_CMP_CTX *ctx, EVP_MD **pmd, int nid)
  85 {
  86     EVP_MD *md = EVP_MD_fetch(ctx->libctx, OBJ_nid2sn(nid), ctx->propq);
  87     /* fetching in advance to be able to throw error early if unsupported */
  88
  89     if (md == NULL) {
  90         ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_ALGORITHM);
  91         return 0;
  92     }
  93     EVP_MD_free(*pmd);
  94     *pmd = md;
  95     return 1;
  96 }
  97
  98 /*
  99  * Allocates and initializes OSSL_CMP_CTX context structure with default values.
 100  * Returns new context on success, NULL on error
 101  */
 102 OSSL_CMP_CTX *OSSL_CMP_CTX_new(OSSL_LIB_CTX *libctx, const char *propq)
 103 {
 104     OSSL_CMP_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
 105
 106     if (ctx == NULL)
 107         goto err;
 108
 109     ctx->libctx = libctx;
 110     if (propq != NULL && (ctx->propq = OPENSSL_strdup(propq)) == NULL)
 111         goto oom;
 112
 113     ctx->log_verbosity = OSSL_CMP_LOG_INFO;
 114
 115     ctx->status = -1;
 116     ctx->failInfoCode = -1;
 117
 118     ctx->keep_alive = 1;
 119     ctx->msg_timeout = -1;
 120
 121     if ((ctx->untrusted = sk_X509_new_null()) == NULL)
 122         goto oom;
 123
 124     ctx->pbm_slen = 16;
 125     if (!cmp_ctx_set_md(ctx, &ctx->pbm_owf, NID_sha256))
 126         goto err;
 127     ctx->pbm_itercnt = 500;
 128     ctx->pbm_mac = NID_hmac_sha1;
 129
 130     if (!cmp_ctx_set_md(ctx, &ctx->digest, NID_sha256))
 131         goto err;
 132     ctx->popoMethod = OSSL_CRMF_POPO_SIGNATURE;
 133     ctx->revocationReason = CRL_REASON_NONE;
 134
 135     /* all other elements are initialized to 0 or NULL, respectively */
 136     return ctx;
 137
 138  oom:
 139     ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
 140  err:
 141     OSSL_CMP_CTX_free(ctx);
 142     return NULL;
 143 }
 144
 145 /* Prepare the OSSL_CMP_CTX for next use, partly re-initializing OSSL_CMP_CTX */
 146 int OSSL_CMP_CTX_reinit(OSSL_CMP_CTX *ctx)
 147 {
 148     if (ctx == NULL) {
 149         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 150         return 0;
 151     }
 152
 153     if (ctx->http_ctx != NULL) {
 154         (void)OSSL_HTTP_close(ctx->http_ctx, 1);
 155         ossl_cmp_debug(ctx, "disconnected from CMP server");
 156         ctx->http_ctx = NULL;
 157     }
 158     ctx->status = -1;
 159     ctx->failInfoCode = -1;
 160
 161     return ossl_cmp_ctx_set0_statusString(ctx, NULL)
 162         && ossl_cmp_ctx_set0_newCert(ctx, NULL)
 163         && ossl_cmp_ctx_set1_newChain(ctx, NULL)
 164         && ossl_cmp_ctx_set1_caPubs(ctx, NULL)
 165         && ossl_cmp_ctx_set1_extraCertsIn(ctx, NULL)
 166         && ossl_cmp_ctx_set0_validatedSrvCert(ctx, NULL)
 167         && OSSL_CMP_CTX_set1_transactionID(ctx, NULL)
 168         && OSSL_CMP_CTX_set1_senderNonce(ctx, NULL)
 169         && ossl_cmp_ctx_set1_recipNonce(ctx, NULL);
 170 }
 171
 172 /* Frees OSSL_CMP_CTX variables allocated in OSSL_CMP_CTX_new() */
 173 void OSSL_CMP_CTX_free(OSSL_CMP_CTX *ctx)
 174 {
 175     if (ctx == NULL)
 176         return;
 177
 178     if (ctx->http_ctx != NULL) {
 179         (void)OSSL_HTTP_close(ctx->http_ctx, 1);
 180         ossl_cmp_debug(ctx, "disconnected from CMP server");
 181     }
 182     OPENSSL_free(ctx->propq);
 183     OPENSSL_free(ctx->serverPath);
 184     OPENSSL_free(ctx->server);
 185     OPENSSL_free(ctx->proxy);
 186     OPENSSL_free(ctx->no_proxy);
 187
 188     X509_free(ctx->srvCert);
 189     X509_free(ctx->validatedSrvCert);
 190     X509_NAME_free(ctx->expected_sender);
 191     X509_STORE_free(ctx->trusted);
 192     sk_X509_pop_free(ctx->untrusted, X509_free);
 193
 194     X509_free(ctx->cert);
 195     sk_X509_pop_free(ctx->chain, X509_free);
 196     EVP_PKEY_free(ctx->pkey);
 197     ASN1_OCTET_STRING_free(ctx->referenceValue);
 198     if (ctx->secretValue != NULL)
 199         OPENSSL_cleanse(ctx->secretValue->data, ctx->secretValue->length);
 200     ASN1_OCTET_STRING_free(ctx->secretValue);
 201     EVP_MD_free(ctx->pbm_owf);
 202
 203     X509_NAME_free(ctx->recipient);
 204     EVP_MD_free(ctx->digest);
 205     ASN1_OCTET_STRING_free(ctx->transactionID);
 206     ASN1_OCTET_STRING_free(ctx->senderNonce);
 207     ASN1_OCTET_STRING_free(ctx->recipNonce);
 208     sk_OSSL_CMP_ITAV_pop_free(ctx->geninfo_ITAVs, OSSL_CMP_ITAV_free);
 209     sk_X509_pop_free(ctx->extraCertsOut, X509_free);
 210
 211     EVP_PKEY_free(ctx->newPkey);
 212     X509_NAME_free(ctx->issuer);
 213     X509_NAME_free(ctx->subjectName);
 214     sk_GENERAL_NAME_pop_free(ctx->subjectAltNames, GENERAL_NAME_free);
 215     sk_X509_EXTENSION_pop_free(ctx->reqExtensions, X509_EXTENSION_free);
 216     sk_POLICYINFO_pop_free(ctx->policies, POLICYINFO_free);
 217     X509_free(ctx->oldCert);
 218     X509_REQ_free(ctx->p10CSR);
 219
 220     sk_OSSL_CMP_ITAV_pop_free(ctx->genm_ITAVs, OSSL_CMP_ITAV_free);
 221
 222     sk_ASN1_UTF8STRING_pop_free(ctx->statusString, ASN1_UTF8STRING_free);
 223     X509_free(ctx->newCert);
 224     sk_X509_pop_free(ctx->newChain, X509_free);
 225     sk_X509_pop_free(ctx->caPubs, X509_free);
 226     sk_X509_pop_free(ctx->extraCertsIn, X509_free);
 227
 228     OPENSSL_free(ctx);
 229 }
 230
 231 int ossl_cmp_ctx_set_status(OSSL_CMP_CTX *ctx, int status)
 232 {
 233     if (!ossl_assert(ctx != NULL))
 234         return 0;
 235     ctx->status = status;
 236     return 1;
 237 }
 238
 239 /*
 240  * Returns the PKIStatus from the last CertRepMessage
 241  * or Revocation Response or error message, -1 on error
 242  */
 243 int OSSL_CMP_CTX_get_status(const OSSL_CMP_CTX *ctx)
 244 {
 245     if (ctx == NULL) {
 246         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 247         return -1;
 248     }
 249     return ctx->status;
 250 }
 251
 252 /*
 253  * Returns the statusString from the last CertRepMessage
 254  * or Revocation Response or error message, NULL on error
 255  */
 256 OSSL_CMP_PKIFREETEXT *OSSL_CMP_CTX_get0_statusString(const OSSL_CMP_CTX *ctx)
 257 {
 258     if (ctx == NULL) {
 259         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 260         return NULL;
 261     }
 262     return ctx->statusString;
 263 }
 264
 265 int ossl_cmp_ctx_set0_statusString(OSSL_CMP_CTX *ctx,
 266                                    OSSL_CMP_PKIFREETEXT *text)
 267 {
 268     if (!ossl_assert(ctx != NULL))
 269         return 0;
 270     sk_ASN1_UTF8STRING_pop_free(ctx->statusString, ASN1_UTF8STRING_free);
 271     ctx->statusString = text;
 272     return 1;
 273 }
 274
 275 int ossl_cmp_ctx_set0_validatedSrvCert(OSSL_CMP_CTX *ctx, X509 *cert)
 276 {
 277     if (!ossl_assert(ctx != NULL))
 278         return 0;
 279     X509_free(ctx->validatedSrvCert);
 280     ctx->validatedSrvCert = cert;
 281     return 1;
 282 }
 283
 284 /* Set callback function for checking if the cert is ok or should be rejected */
 285 int OSSL_CMP_CTX_set_certConf_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_certConf_cb_t cb)
 286 {
 287     if (ctx == NULL) {
 288         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 289         return 0;
 290     }
 291     ctx->certConf_cb = cb;
 292     return 1;
 293 }
 294
 295 /*
 296  * Set argument, respectively a pointer to a structure containing arguments,
 297  * optionally to be used by the certConf callback.
 298  */
 299 int OSSL_CMP_CTX_set_certConf_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
 300 {
 301     if (ctx == NULL) {
 302         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 303         return 0;
 304     }
 305     ctx->certConf_cb_arg = arg;
 306     return 1;
 307 }
 308
 309 /*
 310  * Get argument, respectively the pointer to a structure containing arguments,
 311  * optionally to be used by certConf callback.
 312  * Returns callback argument set previously (NULL if not set or on error)
 313  */
 314 void *OSSL_CMP_CTX_get_certConf_cb_arg(const OSSL_CMP_CTX *ctx)
 315 {
 316     if (ctx == NULL) {
 317         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 318         return NULL;
 319     }
 320     return ctx->certConf_cb_arg;
 321 }
 322
 323 #ifndef OPENSSL_NO_TRACE
 324 static size_t ossl_cmp_log_trace_cb(const char *buf, size_t cnt,
 325                                     int category, int cmd, void *vdata)
 326 {
 327     OSSL_CMP_CTX *ctx = vdata;
 328     const char *msg;
 329     OSSL_CMP_severity level = -1;
 330     char *func = NULL;
 331     char *file = NULL;
 332     int line = 0;
 333
 334     if (buf == NULL || cnt == 0 || cmd != OSSL_TRACE_CTRL_WRITE || ctx == NULL)
 335         return 0;
 336     if (ctx->log_cb == NULL)
 337         return 1; /* silently drop message */
 338
 339     msg = ossl_cmp_log_parse_metadata(buf, &level, &func, &file, &line);
 340
 341     if (level > ctx->log_verbosity) /* excludes the case level is unknown */
 342         goto end; /* suppress output since severity is not sufficient */
 343
 344     if (!ctx->log_cb(func != NULL ? func : "(no func)",
 345                      file != NULL ? file : "(no file)",
 346                      line, level, msg))
 347         cnt = 0;
 348
 349  end:
 350     OPENSSL_free(func);
 351     OPENSSL_free(file);
 352     return cnt;
 353 }
 354 #endif
 355
 356 /* Print CMP log messages (i.e., diagnostic info) via the log cb of the ctx */
 357 int ossl_cmp_print_log(OSSL_CMP_severity level, const OSSL_CMP_CTX *ctx,
 358                        const char *func, const char *file, int line,
 359                        const char *level_str, const char *format, ...)
 360 {
 361     va_list args;
 362     char hugebuf[1024 * 2];
 363     int res = 0;
 364
 365     if (ctx == NULL || ctx->log_cb == NULL)
 366         return 1; /* silently drop message */
 367
 368     if (level > ctx->log_verbosity) /* excludes the case level is unknown */
 369         return 1; /* suppress output since severity is not sufficient */
 370
 371     if (format == NULL)
 372         return 0;
 373
 374     va_start(args, format);
 375
 376     if (func == NULL)
 377         func = "(unset function name)";
 378     if (file == NULL)
 379         file = "(unset file name)";
 380     if (level_str == NULL)
 381         level_str = "(unset level string)";
 382
 383 #ifndef OPENSSL_NO_TRACE
 384     if (OSSL_TRACE_ENABLED(CMP)) {
 385         OSSL_TRACE_BEGIN(CMP) {
 386             int printed =
 387                 BIO_snprintf(hugebuf, sizeof(hugebuf),
 388                              "%s:%s:%d:" OSSL_CMP_LOG_PREFIX "%s: ",
 389                              func, file, line, level_str);
 390             if (printed > 0 && (size_t)printed < sizeof(hugebuf)) {
 391                 if (BIO_vsnprintf(hugebuf + printed,
 392                                   sizeof(hugebuf) - printed, format, args) > 0)
 393                     res = BIO_puts(trc_out, hugebuf) > 0;
 394             }
 395         } OSSL_TRACE_END(CMP);
 396     }
 397 #else /* compensate for disabled trace API */
 398     {
 399         if (BIO_vsnprintf(hugebuf, sizeof(hugebuf), format, args) > 0)
 400             res = ctx->log_cb(func, file, line, level, hugebuf);
 401     }
 402 #endif
 403     va_end(args);
 404     return res;
 405 }
 406
 407 /* Set a callback function for error reporting and logging messages */
 408 int OSSL_CMP_CTX_set_log_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_log_cb_t cb)
 409 {
 410     if (ctx == NULL) {
 411         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 412         return 0;
 413     }
 414     ctx->log_cb = cb;
 415
 416 #ifndef OPENSSL_NO_TRACE
 417     /* do also in case cb == NULL, to switch off logging output: */
 418     if (!OSSL_trace_set_callback(OSSL_TRACE_CATEGORY_CMP,
 419                                  ossl_cmp_log_trace_cb, ctx))
 420         return 0;
 421 #endif
 422
 423     return 1;
 424 }
 425
 426 /* Print OpenSSL and CMP errors via the log cb of the ctx or ERR_print_errors */
 427 void OSSL_CMP_CTX_print_errors(const OSSL_CMP_CTX *ctx)
 428 {
 429     if (ctx != NULL && OSSL_CMP_LOG_ERR > ctx->log_verbosity)
 430         return; /* suppress output since severity is not sufficient */
 431     OSSL_CMP_print_errors_cb(ctx == NULL ? NULL : ctx->log_cb);
 432 }
 433
 434 /*
 435  * Set or clear the reference value to be used for identification
 436  * (i.e., the user name) when using PBMAC.
 437  */
 438 int OSSL_CMP_CTX_set1_referenceValue(OSSL_CMP_CTX *ctx,
 439                                      const unsigned char *ref, int len)
 440 {
 441     if (ctx == NULL) {
 442         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 443         return 0;
 444     }
 445     return ossl_cmp_asn1_octet_string_set1_bytes(&ctx->referenceValue, ref,
 446                                                  len);
 447 }
 448
 449 /* Set or clear the password to be used for protecting messages with PBMAC */
 450 int OSSL_CMP_CTX_set1_secretValue(OSSL_CMP_CTX *ctx, const unsigned char *sec,
 451                                   const int len)
 452 {
 453     ASN1_OCTET_STRING *secretValue = NULL;
 454     if (ctx == NULL) {
 455         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 456         return 0;
 457     }
 458     if (ossl_cmp_asn1_octet_string_set1_bytes(&secretValue, sec, len) != 1)
 459         return 0;
 460     if (ctx->secretValue != NULL) {
 461         OPENSSL_cleanse(ctx->secretValue->data, ctx->secretValue->length);
 462         ASN1_OCTET_STRING_free(ctx->secretValue);
 463     }
 464     ctx->secretValue = secretValue;
 465     return 1;
 466 }
 467
 468 /* Returns the cert chain computed by OSSL_CMP_certConf_cb(), NULL on error */
 469 STACK_OF(X509) *OSSL_CMP_CTX_get1_newChain(const OSSL_CMP_CTX *ctx)
 470 {
 471     if (ctx == NULL) {
 472         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 473         return NULL;
 474     }
 475     return X509_chain_up_ref(ctx->newChain);
 476 }
 477
 478 /*
 479  * Copies any given stack of inbound X509 certificates to newChain
 480  * of the OSSL_CMP_CTX structure so that they may be retrieved later.
 481  */
 482 int ossl_cmp_ctx_set1_newChain(OSSL_CMP_CTX *ctx, STACK_OF(X509) *newChain)
 483 {
 484     if (!ossl_assert(ctx != NULL))
 485         return 0;
 486
 487     sk_X509_pop_free(ctx->newChain, X509_free);
 488     ctx->newChain = NULL;
 489     return newChain == NULL ||
 490         (ctx->newChain = X509_chain_up_ref(newChain)) != NULL;
 491 }
 492
 493 /* Returns the stack of extraCerts received in CertRepMessage, NULL on error */
 494 STACK_OF(X509) *OSSL_CMP_CTX_get1_extraCertsIn(const OSSL_CMP_CTX *ctx)
 495 {
 496     if (ctx == NULL) {
 497         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 498         return NULL;
 499     }
 500     return X509_chain_up_ref(ctx->extraCertsIn);
 501 }
 502
 503 /*
 504  * Copies any given stack of inbound X509 certificates to extraCertsIn
 505  * of the OSSL_CMP_CTX structure so that they may be retrieved later.
 506  */
 507 int ossl_cmp_ctx_set1_extraCertsIn(OSSL_CMP_CTX *ctx,
 508                                    STACK_OF(X509) *extraCertsIn)
 509 {
 510     if (!ossl_assert(ctx != NULL))
 511         return 0;
 512
 513     sk_X509_pop_free(ctx->extraCertsIn, X509_free);
 514     ctx->extraCertsIn = NULL;
 515     return extraCertsIn == NULL
 516         || (ctx->extraCertsIn = X509_chain_up_ref(extraCertsIn)) != NULL;
 517 }
 518
 519 /*
 520  * Copies any given stack as the new stack of X509
 521  * certificates to send out in the extraCerts field.
 522  */
 523 int OSSL_CMP_CTX_set1_extraCertsOut(OSSL_CMP_CTX *ctx,
 524                                     STACK_OF(X509) *extraCertsOut)
 525 {
 526     if (ctx == NULL) {
 527         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 528         return 0;
 529     }
 530
 531     sk_X509_pop_free(ctx->extraCertsOut, X509_free);
 532     ctx->extraCertsOut = NULL;
 533     return extraCertsOut == NULL
 534         || (ctx->extraCertsOut = X509_chain_up_ref(extraCertsOut)) != NULL;
 535 }
 536
 537 /*
 538  * Add the given policy info object
 539  * to the X509_EXTENSIONS of the requested certificate template.
 540  */
 541 int OSSL_CMP_CTX_push0_policy(OSSL_CMP_CTX *ctx, POLICYINFO *pinfo)
 542 {
 543     if (ctx == NULL || pinfo == NULL) {
 544         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 545         return 0;
 546     }
 547
 548     if (ctx->policies == NULL
 549             && (ctx->policies = CERTIFICATEPOLICIES_new()) == NULL)
 550         return 0;
 551
 552     return sk_POLICYINFO_push(ctx->policies, pinfo);
 553 }
 554
 555 /* Add an ITAV for geninfo of the PKI message header */
 556 int OSSL_CMP_CTX_push0_geninfo_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav)
 557 {
 558     if (ctx == NULL) {
 559         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 560         return 0;
 561     }
 562     return OSSL_CMP_ITAV_push0_stack_item(&ctx->geninfo_ITAVs, itav);
 563 }
 564
 565 /* Add an itav for the body of outgoing general messages */
 566 int OSSL_CMP_CTX_push0_genm_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav)
 567 {
 568     if (ctx == NULL) {
 569         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 570         return 0;
 571     }
 572     return OSSL_CMP_ITAV_push0_stack_item(&ctx->genm_ITAVs, itav);
 573 }
 574
 575 /*
 576  * Returns a duplicate of the stack of X509 certificates that
 577  * were received in the caPubs field of the last CertRepMessage.
 578  * Returns NULL on error
 579  */
 580 STACK_OF(X509) *OSSL_CMP_CTX_get1_caPubs(const OSSL_CMP_CTX *ctx)
 581 {
 582     if (ctx == NULL) {
 583         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 584         return NULL;
 585     }
 586     return X509_chain_up_ref(ctx->caPubs);
 587 }
 588
 589 /*
 590  * Copies any given stack of certificates to the given
 591  * OSSL_CMP_CTX structure so that they may be retrieved later.
 592  */
 593 int ossl_cmp_ctx_set1_caPubs(OSSL_CMP_CTX *ctx, STACK_OF(X509) *caPubs)
 594 {
 595     if (!ossl_assert(ctx != NULL))
 596         return 0;
 597
 598     sk_X509_pop_free(ctx->caPubs, X509_free);
 599     ctx->caPubs = NULL;
 600     return caPubs == NULL || (ctx->caPubs = X509_chain_up_ref(caPubs)) != NULL;
 601 }
 602
 603 #define char_dup OPENSSL_strdup
 604 #define char_free OPENSSL_free
 605 #define DEFINE_OSSL_CMP_CTX_set1(FIELD, TYPE) /* this uses _dup */ \
 606 int OSSL_CMP_CTX_set1_##FIELD(OSSL_CMP_CTX *ctx, const TYPE *val) \
 607 { \
 608     TYPE *val_dup = NULL; \
 609     \
 610     if (ctx == NULL) { \
 611         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); \
 612         return 0; \
 613     } \
 614     \
 615     if (val != NULL && (val_dup = TYPE##_dup(val)) == NULL) \
 616         return 0; \
 617     TYPE##_free(ctx->FIELD); \
 618     ctx->FIELD = val_dup; \
 619     return 1; \
 620 }
 621
 622 #define X509_invalid(cert) (!ossl_x509v3_cache_extensions(cert))
 623 #define EVP_PKEY_invalid(key) 0
 624 #define DEFINE_OSSL_CMP_CTX_set1_up_ref(FIELD, TYPE) \
 625 int OSSL_CMP_CTX_set1_##FIELD(OSSL_CMP_CTX *ctx, TYPE *val) \
 626 { \
 627     if (ctx == NULL) { \
 628         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); \
 629         return 0; \
 630     } \
 631     \
 632     /* prevent misleading error later on malformed cert or provider issue */ \
 633     if (val != NULL && TYPE##_invalid(val)) { \
 634         ERR_raise(ERR_LIB_CMP, CMP_R_POTENTIALLY_INVALID_CERTIFICATE); \
 635         return 0; \
 636     } \
 637     if (val != NULL && !TYPE##_up_ref(val)) \
 638         return 0; \
 639     TYPE##_free(ctx->FIELD); \
 640     ctx->FIELD = val; \
 641     return 1; \
 642 }
 643
 644 /*
 645  * Pins the server certificate to be directly trusted (even if it is expired)
 646  * for verifying response messages.
 647  * Cert pointer is not consumed. It may be NULL to clear the entry.
 648  */
 649 DEFINE_OSSL_CMP_CTX_set1_up_ref(srvCert, X509)
 650
 651 /* Set the X509 name of the recipient. Set in the PKIHeader */
 652 DEFINE_OSSL_CMP_CTX_set1(recipient, X509_NAME)
 653
 654 /* Store the X509 name of the expected sender in the PKIHeader of responses */
 655 DEFINE_OSSL_CMP_CTX_set1(expected_sender, X509_NAME)
 656
 657 /* Set the X509 name of the issuer. Set in the PKIHeader */
 658 DEFINE_OSSL_CMP_CTX_set1(issuer, X509_NAME)
 659
 660 /*
 661  * Set the subject name that will be placed in the certificate
 662  * request. This will be the subject name on the received certificate.
 663  */
 664 DEFINE_OSSL_CMP_CTX_set1(subjectName, X509_NAME)
 665
 666 /* Set the X.509v3 certificate request extensions to be used in IR/CR/KUR */
 667 int OSSL_CMP_CTX_set0_reqExtensions(OSSL_CMP_CTX *ctx, X509_EXTENSIONS *exts)
 668 {
 669     if (ctx == NULL) {
 670         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 671         return 0;
 672     }
 673
 674     if (sk_GENERAL_NAME_num(ctx->subjectAltNames) > 0 && exts != NULL
 675             && X509v3_get_ext_by_NID(exts, NID_subject_alt_name, -1) >= 0) {
 676         ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_SAN_SOURCES);
 677         return 0;
 678     }
 679     sk_X509_EXTENSION_pop_free(ctx->reqExtensions, X509_EXTENSION_free);
 680     ctx->reqExtensions = exts;
 681     return 1;
 682 }
 683
 684 /* returns 1 if ctx contains a Subject Alternative Name extension, else 0 */
 685 int OSSL_CMP_CTX_reqExtensions_have_SAN(OSSL_CMP_CTX *ctx)
 686 {
 687     if (ctx == NULL) {
 688         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 689         return -1;
 690     }
 691     /* if one of the following conditions 'fail' this is not an error */
 692     return ctx->reqExtensions != NULL
 693         && X509v3_get_ext_by_NID(ctx->reqExtensions,
 694                                  NID_subject_alt_name, -1) >= 0;
 695 }
 696
 697 /*
 698  * Add a GENERAL_NAME structure that will be added to the CRMF
 699  * request's extensions field to request subject alternative names.
 700  */
 701 int OSSL_CMP_CTX_push1_subjectAltName(OSSL_CMP_CTX *ctx,
 702                                       const GENERAL_NAME *name)
 703 {
 704     GENERAL_NAME *name_dup;
 705
 706     if (ctx == NULL || name == NULL) {
 707         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 708         return 0;
 709     }
 710
 711     if (OSSL_CMP_CTX_reqExtensions_have_SAN(ctx) == 1) {
 712         ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_SAN_SOURCES);
 713         return 0;
 714     }
 715
 716     if (ctx->subjectAltNames == NULL
 717             && (ctx->subjectAltNames = sk_GENERAL_NAME_new_null()) == NULL)
 718         return 0;
 719     if ((name_dup = GENERAL_NAME_dup(name)) == NULL)
 720         return 0;
 721     if (!sk_GENERAL_NAME_push(ctx->subjectAltNames, name_dup)) {
 722         GENERAL_NAME_free(name_dup);
 723         return 0;
 724     }
 725     return 1;
 726 }
 727
 728 /*
 729  * Set our own client certificate, used for example in KUR and when
 730  * doing the IR with existing certificate.
 731  */
 732 DEFINE_OSSL_CMP_CTX_set1_up_ref(cert, X509)
 733
 734 int OSSL_CMP_CTX_build_cert_chain(OSSL_CMP_CTX *ctx, X509_STORE *own_trusted,
 735                                   STACK_OF(X509) *candidates)
 736 {
 737     STACK_OF(X509) *chain;
 738
 739     if (ctx == NULL) {
 740         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 741         return 0;
 742     }
 743
 744     if (!ossl_x509_add_certs_new(&ctx->untrusted, candidates,
 745                                  X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
 746         return 0;
 747
 748     ossl_cmp_debug(ctx, "trying to build chain for own CMP signer cert");
 749     chain = X509_build_chain(ctx->cert, ctx->untrusted, own_trusted, 0,
 750                              ctx->libctx, ctx->propq);
 751     if (chain == NULL) {
 752         ERR_raise(ERR_LIB_CMP, CMP_R_FAILED_BUILDING_OWN_CHAIN);
 753         return 0;
 754     }
 755     ossl_cmp_debug(ctx, "success building chain for own CMP signer cert");
 756     ctx->chain = chain;
 757     return 1;
 758 }
 759
 760 /*
 761  * Set the old certificate that we are updating in KUR
 762  * or the certificate to be revoked in RR, respectively.
 763  * Also used as reference cert (defaulting to cert) for deriving subject DN
 764  * and SANs. Its issuer is used as default recipient in the CMP message header.
 765  */
 766 DEFINE_OSSL_CMP_CTX_set1_up_ref(oldCert, X509)
 767
 768 /* Set the PKCS#10 CSR to be sent in P10CR */
 769 DEFINE_OSSL_CMP_CTX_set1(p10CSR, X509_REQ)
 770
 771 /*
 772  * Set the (newly received in IP/KUP/CP) certificate in the context.
 773  * TODO: this only permits for one cert to be enrolled at a time.
 774  */
 775 int ossl_cmp_ctx_set0_newCert(OSSL_CMP_CTX *ctx, X509 *cert)
 776 {
 777     if (!ossl_assert(ctx != NULL))
 778         return 0;
 779
 780     X509_free(ctx->newCert);
 781     ctx->newCert = cert;
 782     return 1;
 783 }
 784
 785 /*
 786  * Get the (newly received in IP/KUP/CP) client certificate from the context
 787  * TODO: this only permits for one client cert to be received...
 788  */
 789 X509 *OSSL_CMP_CTX_get0_newCert(const OSSL_CMP_CTX *ctx)
 790 {
 791     if (ctx == NULL) {
 792         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 793         return NULL;
 794     }
 795     return ctx->newCert;
 796 }
 797
 798 /* Set the client's current private key */
 799 DEFINE_OSSL_CMP_CTX_set1_up_ref(pkey, EVP_PKEY)
 800
 801 /* Set new key pair. Used e.g. when doing Key Update */
 802 int OSSL_CMP_CTX_set0_newPkey(OSSL_CMP_CTX *ctx, int priv, EVP_PKEY *pkey)
 803 {
 804     if (ctx == NULL) {
 805         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 806         return 0;
 807     }
 808
 809     EVP_PKEY_free(ctx->newPkey);
 810     ctx->newPkey = pkey;
 811     ctx->newPkey_priv = priv;
 812     return 1;
 813 }
 814
 815 /* Get the private/public key to use for cert enrollment, or NULL on error */
 816 EVP_PKEY *OSSL_CMP_CTX_get0_newPkey(const OSSL_CMP_CTX *ctx, int priv)
 817 {
 818     if (ctx == NULL) {
 819         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 820         return NULL;
 821     }
 822
 823     if (ctx->newPkey != NULL)
 824         return priv && !ctx->newPkey_priv ? NULL : ctx->newPkey;
 825     if (ctx->p10CSR != NULL)
 826         return priv ? NULL : X509_REQ_get0_pubkey(ctx->p10CSR);
 827     return ctx->pkey; /* may be NULL */
 828 }
 829
 830 /* Set the given transactionID to the context */
 831 int OSSL_CMP_CTX_set1_transactionID(OSSL_CMP_CTX *ctx,
 832                                     const ASN1_OCTET_STRING *id)
 833 {
 834     if (ctx == NULL) {
 835         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 836         return 0;
 837     }
 838     return ossl_cmp_asn1_octet_string_set1(&ctx->transactionID, id);
 839 }
 840
 841 /* Set the nonce to be used for the recipNonce in the message created next */
 842 int ossl_cmp_ctx_set1_recipNonce(OSSL_CMP_CTX *ctx,
 843                                  const ASN1_OCTET_STRING *nonce)
 844 {
 845     if (!ossl_assert(ctx != NULL))
 846         return 0;
 847     return ossl_cmp_asn1_octet_string_set1(&ctx->recipNonce, nonce);
 848 }
 849
 850 /* Stores the given nonce as the last senderNonce sent out */
 851 int OSSL_CMP_CTX_set1_senderNonce(OSSL_CMP_CTX *ctx,
 852                                   const ASN1_OCTET_STRING *nonce)
 853 {
 854     if (ctx == NULL) {
 855         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 856         return 0;
 857     }
 858     return ossl_cmp_asn1_octet_string_set1(&ctx->senderNonce, nonce);
 859 }
 860
 861 /* Set the proxy server to use for HTTP(S) connections */
 862 DEFINE_OSSL_CMP_CTX_set1(proxy, char)
 863
 864 /* Set the (HTTP) host name of the CMP server */
 865 DEFINE_OSSL_CMP_CTX_set1(server, char)
 866
 867 /* Set the server exclusion list of the HTTP proxy server */
 868 DEFINE_OSSL_CMP_CTX_set1(no_proxy, char)
 869
 870 /* Set the http connect/disconnect callback function to be used for HTTP(S) */
 871 int OSSL_CMP_CTX_set_http_cb(OSSL_CMP_CTX *ctx, OSSL_HTTP_bio_cb_t cb)
 872 {
 873     if (ctx == NULL) {
 874         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 875         return 0;
 876     }
 877     ctx->http_cb = cb;
 878     return 1;
 879 }
 880
 881 /* Set argument optionally to be used by the http connect/disconnect callback */
 882 int OSSL_CMP_CTX_set_http_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
 883 {
 884     if (ctx == NULL) {
 885         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 886         return 0;
 887     }
 888     ctx->http_cb_arg = arg;
 889     return 1;
 890 }
 891
 892 /*
 893  * Get argument optionally to be used by the http connect/disconnect callback
 894  * Returns callback argument set previously (NULL if not set or on error)
 895  */
 896 void *OSSL_CMP_CTX_get_http_cb_arg(const OSSL_CMP_CTX *ctx)
 897 {
 898     if (ctx == NULL) {
 899         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 900         return NULL;
 901     }
 902     return ctx->http_cb_arg;
 903 }
 904
 905 /* Set callback function for sending CMP request and receiving response */
 906 int OSSL_CMP_CTX_set_transfer_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_transfer_cb_t cb)
 907 {
 908     if (ctx == NULL) {
 909         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 910         return 0;
 911     }
 912     ctx->transfer_cb = cb;
 913     return 1;
 914 }
 915
 916 /* Set argument optionally to be used by the transfer callback */
 917 int OSSL_CMP_CTX_set_transfer_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
 918 {
 919     if (ctx == NULL) {
 920         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 921         return 0;
 922     }
 923     ctx->transfer_cb_arg = arg;
 924     return 1;
 925 }
 926
 927 /*
 928  * Get argument optionally to be used by the transfer callback.
 929  * Returns callback argument set previously (NULL if not set or on error)
 930  */
 931 void *OSSL_CMP_CTX_get_transfer_cb_arg(const OSSL_CMP_CTX *ctx)
 932 {
 933     if (ctx == NULL) {
 934         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 935         return NULL;
 936     }
 937     return ctx->transfer_cb_arg;
 938 }
 939
 940 /** Set the HTTP server port to be used */
 941 int OSSL_CMP_CTX_set_serverPort(OSSL_CMP_CTX *ctx, int port)
 942 {
 943     if (ctx == NULL) {
 944         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 945         return 0;
 946     }
 947     ctx->serverPort = port;
 948     return 1;
 949 }
 950
 951 /* Set the HTTP path to be used on the server (e.g "pkix/") */
 952 DEFINE_OSSL_CMP_CTX_set1(serverPath, char)
 953
 954 /* Set the failInfo error code as bit encoding in OSSL_CMP_CTX */
 955 int ossl_cmp_ctx_set_failInfoCode(OSSL_CMP_CTX *ctx, int fail_info)
 956 {
 957     if (!ossl_assert(ctx != NULL))
 958         return 0;
 959     ctx->failInfoCode = fail_info;
 960     return 1;
 961 }
 962
 963 /*
 964  * Get the failInfo error code in OSSL_CMP_CTX as bit encoding.
 965  * Returns bit string as integer on success, -1 on error
 966  */
 967 int OSSL_CMP_CTX_get_failInfoCode(const OSSL_CMP_CTX *ctx)
 968 {
 969     if (ctx == NULL) {
 970         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 971         return -1;
 972     }
 973     return ctx->failInfoCode;
 974 }
 975
 976 /* Set a Boolean or integer option of the context to the "val" arg */
 977 int OSSL_CMP_CTX_set_option(OSSL_CMP_CTX *ctx, int opt, int val)
 978 {
 979     int min_val;
 980
 981     if (ctx == NULL) {
 982         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
 983         return 0;
 984     }
 985
 986     switch (opt) {
 987     case OSSL_CMP_OPT_REVOCATION_REASON:
 988         min_val = OCSP_REVOKED_STATUS_NOSTATUS;
 989         break;
 990     case OSSL_CMP_OPT_POPO_METHOD:
 991         min_val = OSSL_CRMF_POPO_NONE;
 992         break;
 993     default:
 994         min_val = 0;
 995         break;
 996     }
 997     if (val < min_val) {
 998         ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_SMALL);
 999         return 0;
1000     }
1001
1002     switch (opt) {
1003     case OSSL_CMP_OPT_LOG_VERBOSITY:
1004         if (val > OSSL_CMP_LOG_MAX) {
1005             ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
1006             return 0;
1007         }
1008         ctx->log_verbosity = val;
1009         break;
1010     case OSSL_CMP_OPT_IMPLICIT_CONFIRM:
1011         ctx->implicitConfirm = val;
1012         break;
1013     case OSSL_CMP_OPT_DISABLE_CONFIRM:
1014         ctx->disableConfirm = val;
1015         break;
1016     case OSSL_CMP_OPT_UNPROTECTED_SEND:
1017         ctx->unprotectedSend = val;
1018         break;
1019     case OSSL_CMP_OPT_UNPROTECTED_ERRORS:
1020         ctx->unprotectedErrors = val;
1021         break;
1022     case OSSL_CMP_OPT_VALIDITY_DAYS:
1023         ctx->days = val;
1024         break;
1025     case OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT:
1026         ctx->SubjectAltName_nodefault = val;
1027         break;
1028     case OSSL_CMP_OPT_SUBJECTALTNAME_CRITICAL:
1029         ctx->setSubjectAltNameCritical = val;
1030         break;
1031     case OSSL_CMP_OPT_POLICIES_CRITICAL:
1032         ctx->setPoliciesCritical = val;
1033         break;
1034     case OSSL_CMP_OPT_IGNORE_KEYUSAGE:
1035         ctx->ignore_keyusage = val;
1036         break;
1037     case OSSL_CMP_OPT_POPO_METHOD:
1038         if (val > OSSL_CRMF_POPO_KEYAGREE) {
1039             ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
1040             return 0;
1041         }
1042         ctx->popoMethod = val;
1043         break;
1044     case OSSL_CMP_OPT_DIGEST_ALGNID:
1045         if (!cmp_ctx_set_md(ctx, &ctx->digest, val))
1046             return 0;
1047         break;
1048     case OSSL_CMP_OPT_OWF_ALGNID:
1049         if (!cmp_ctx_set_md(ctx, &ctx->pbm_owf, val))
1050             return 0;
1051         break;
1052     case OSSL_CMP_OPT_MAC_ALGNID:
1053         ctx->pbm_mac = val;
1054         break;
1055     case OSSL_CMP_OPT_KEEP_ALIVE:
1056         ctx->keep_alive = val;
1057         break;
1058     case OSSL_CMP_OPT_MSG_TIMEOUT:
1059         ctx->msg_timeout = val;
1060         break;
1061     case OSSL_CMP_OPT_TOTAL_TIMEOUT:
1062         ctx->total_timeout = val;
1063         break;
1064     case OSSL_CMP_OPT_PERMIT_TA_IN_EXTRACERTS_FOR_IR:
1065         ctx->permitTAInExtraCertsForIR = val;
1066         break;
1067     case OSSL_CMP_OPT_REVOCATION_REASON:
1068         if (val > OCSP_REVOKED_STATUS_AACOMPROMISE) {
1069             ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
1070             return 0;
1071         }
1072         ctx->revocationReason = val;
1073         break;
1074     default:
1075         ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_OPTION);
1076         return 0;
1077     }
1078
1079     return 1;
1080 }
1081
1082 /*
1083  * Reads a Boolean or integer option value from the context.
1084  * Returns -1 on error (which is the default OSSL_CMP_OPT_REVOCATION_REASON)
1085  */
1086 int OSSL_CMP_CTX_get_option(const OSSL_CMP_CTX *ctx, int opt)
1087 {
1088     if (ctx == NULL) {
1089         ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
1090         return -1;
1091     }
1092
1093     switch (opt) {
1094     case OSSL_CMP_OPT_LOG_VERBOSITY:
1095         return ctx->log_verbosity;
1096     case OSSL_CMP_OPT_IMPLICIT_CONFIRM:
1097         return ctx->implicitConfirm;
1098     case OSSL_CMP_OPT_DISABLE_CONFIRM:
1099         return ctx->disableConfirm;
1100     case OSSL_CMP_OPT_UNPROTECTED_SEND:
1101         return ctx->unprotectedSend;
1102     case OSSL_CMP_OPT_UNPROTECTED_ERRORS:
1103         return ctx->unprotectedErrors;
1104     case OSSL_CMP_OPT_VALIDITY_DAYS:
1105         return ctx->days;
1106     case OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT:
1107         return ctx->SubjectAltName_nodefault;
1108     case OSSL_CMP_OPT_SUBJECTALTNAME_CRITICAL:
1109         return ctx->setSubjectAltNameCritical;
1110     case OSSL_CMP_OPT_POLICIES_CRITICAL:
1111         return ctx->setPoliciesCritical;
1112     case OSSL_CMP_OPT_IGNORE_KEYUSAGE:
1113         return ctx->ignore_keyusage;
1114     case OSSL_CMP_OPT_POPO_METHOD:
1115         return ctx->popoMethod;
1116     case OSSL_CMP_OPT_DIGEST_ALGNID:
1117         return EVP_MD_get_type(ctx->digest);
1118     case OSSL_CMP_OPT_OWF_ALGNID:
1119         return EVP_MD_get_type(ctx->pbm_owf);
1120     case OSSL_CMP_OPT_MAC_ALGNID:
1121         return ctx->pbm_mac;
1122     case OSSL_CMP_OPT_KEEP_ALIVE:
1123         return ctx->keep_alive;
1124     case OSSL_CMP_OPT_MSG_TIMEOUT:
1125         return ctx->msg_timeout;
1126     case OSSL_CMP_OPT_TOTAL_TIMEOUT:
1127         return ctx->total_timeout;
1128     case OSSL_CMP_OPT_PERMIT_TA_IN_EXTRACERTS_FOR_IR:
1129         return ctx->permitTAInExtraCertsForIR;
1130     case OSSL_CMP_OPT_REVOCATION_REASON:
1131         return ctx->revocationReason;
1132     default:
1133         ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_OPTION);
1134         return -1;
1135     }
1136 }