crypto/provider_core.c

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/core.h>
  11 #include <openssl/core_numbers.h>
  12 #include <openssl/params.h>
  13 #include <openssl/opensslv.h>
  14 #include "internal/cryptlib.h"
  15 #include "internal/nelem.h"
  16 #include "internal/thread_once.h"
  17 #include "internal/provider.h"
  18 #include "internal/refcount.h"
  19 #include "provider_local.h"
  20
  21 static OSSL_PROVIDER *provider_new(const char *name,
  22                                    OSSL_provider_init_fn *init_function);
  23
  24 /*-
  25  * Provider Object structure
  26  * =========================
  27  */
  28
  29 typedef struct {
  30     char *name;
  31     char *value;
  32 } INFOPAIR;
  33 DEFINE_STACK_OF(INFOPAIR)
  34
  35 struct provider_store_st;        /* Forward declaration */
  36
  37 struct ossl_provider_st {
  38     /* Flag bits */
  39     unsigned int flag_initialized:1;
  40     unsigned int flag_fallback:1;
  41
  42     /* OpenSSL library side data */
  43     CRYPTO_REF_COUNT refcnt;
  44     CRYPTO_RWLOCK *refcnt_lock;  /* For the ref counter */
  45     char *name;
  46     char *path;
  47     DSO *module;
  48     OSSL_provider_init_fn *init_function;
  49     STACK_OF(INFOPAIR) *parameters;
  50     OPENSSL_CTX *libctx; /* The library context this instance is in */
  51     struct provider_store_st *store; /* The store this instance belongs to */
  52
  53     /* Provider side functions */
  54     OSSL_provider_teardown_fn *teardown;
  55     OSSL_provider_get_param_types_fn *get_param_types;
  56     OSSL_provider_get_params_fn *get_params;
  57     OSSL_provider_query_operation_fn *query_operation;
  58
  59     /* Provider side data */
  60     void *provctx;
  61 };
  62 DEFINE_STACK_OF(OSSL_PROVIDER)
  63
  64 static int ossl_provider_cmp(const OSSL_PROVIDER * const *a,
  65                              const OSSL_PROVIDER * const *b)
  66 {
  67     return strcmp((*a)->name, (*b)->name);
  68 }
  69
  70 /*-
  71  * Provider Object store
  72  * =====================
  73  *
  74  * The Provider Object store is a library context object, and therefore needs
  75  * an index.
  76  */
  77
  78 struct provider_store_st {
  79     STACK_OF(OSSL_PROVIDER) *providers;
  80     CRYPTO_RWLOCK *lock;
  81     unsigned int use_fallbacks:1;
  82 };
  83
  84 static void provider_store_free(void *vstore)
  85 {
  86     struct provider_store_st *store = vstore;
  87
  88     if (store == NULL)
  89         return;
  90     sk_OSSL_PROVIDER_pop_free(store->providers, ossl_provider_free);
  91     CRYPTO_THREAD_lock_free(store->lock);
  92     OPENSSL_free(store);
  93 }
  94
  95 static void *provider_store_new(OPENSSL_CTX *ctx)
  96 {
  97     struct provider_store_st *store = OPENSSL_zalloc(sizeof(*store));
  98     const struct predefined_providers_st *p = NULL;
  99
 100     if (store == NULL
 101         || (store->providers = sk_OSSL_PROVIDER_new(ossl_provider_cmp)) == NULL
 102         || (store->lock = CRYPTO_THREAD_lock_new()) == NULL) {
 103         provider_store_free(store);
 104         return NULL;
 105     }
 106     store->use_fallbacks = 1;
 107
 108     for (p = predefined_providers; p->name != NULL; p++) {
 109         OSSL_PROVIDER *prov = NULL;
 110
 111         /*
 112          * We use the internal constructor directly here,
 113          * otherwise we get a call loop
 114          */
 115         prov = provider_new(p->name, p->init);
 116
 117         if (prov == NULL
 118             || sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
 119             ossl_provider_free(prov);
 120             provider_store_free(store);
 121             CRYPTOerr(CRYPTO_F_PROVIDER_STORE_NEW, ERR_R_INTERNAL_ERROR);
 122             return NULL;
 123         }
 124         prov->libctx = ctx;
 125         prov->store = store;
 126         if(p->is_fallback)
 127             ossl_provider_set_fallback(prov);
 128     }
 129
 130     return store;
 131 }
 132
 133 static const OPENSSL_CTX_METHOD provider_store_method = {
 134     provider_store_new,
 135     provider_store_free,
 136 };
 137
 138 static struct provider_store_st *get_provider_store(OPENSSL_CTX *libctx)
 139 {
 140     struct provider_store_st *store = NULL;
 141
 142     store = openssl_ctx_get_data(libctx, OPENSSL_CTX_PROVIDER_STORE_INDEX,
 143                                  &provider_store_method);
 144     if (store == NULL)
 145         CRYPTOerr(CRYPTO_F_GET_PROVIDER_STORE, ERR_R_INTERNAL_ERROR);
 146     return store;
 147 }
 148
 149 OSSL_PROVIDER *ossl_provider_find(OPENSSL_CTX *libctx, const char *name)
 150 {
 151     struct provider_store_st *store = NULL;
 152     OSSL_PROVIDER *prov = NULL;
 153
 154     if ((store = get_provider_store(libctx)) != NULL) {
 155         OSSL_PROVIDER tmpl = { 0, };
 156         int i;
 157
 158         tmpl.name = (char *)name;
 159         CRYPTO_THREAD_write_lock(store->lock);
 160         if ((i = sk_OSSL_PROVIDER_find(store->providers, &tmpl)) == -1
 161             || (prov = sk_OSSL_PROVIDER_value(store->providers, i)) == NULL
 162             || !ossl_provider_upref(prov))
 163             prov = NULL;
 164         CRYPTO_THREAD_unlock(store->lock);
 165     }
 166
 167     return prov;
 168 }
 169
 170 /*-
 171  * Provider Object methods
 172  * =======================
 173  */
 174
 175 static OSSL_PROVIDER *provider_new(const char *name,
 176                                    OSSL_provider_init_fn *init_function)
 177 {
 178     OSSL_PROVIDER *prov = NULL;
 179
 180     if ((prov = OPENSSL_zalloc(sizeof(*prov))) == NULL
 181 #ifndef HAVE_ATOMICS
 182         || (prov->refcnt_lock = CRYPTO_THREAD_lock_new()) == NULL
 183 #endif
 184         || !ossl_provider_upref(prov) /* +1 One reference to be returned */
 185         || (prov->name = OPENSSL_strdup(name)) == NULL) {
 186         ossl_provider_free(prov);
 187         CRYPTOerr(CRYPTO_F_PROVIDER_NEW, ERR_R_MALLOC_FAILURE);
 188         return NULL;
 189     }
 190
 191     prov->init_function = init_function;
 192     return prov;
 193 }
 194
 195 int ossl_provider_upref(OSSL_PROVIDER *prov)
 196 {
 197     int ref = 0;
 198
 199     if (CRYPTO_UP_REF(&prov->refcnt, &ref, prov->refcnt_lock) <= 0)
 200         return 0;
 201     return ref;
 202 }
 203
 204 OSSL_PROVIDER *ossl_provider_new(OPENSSL_CTX *libctx, const char *name,
 205                                  OSSL_provider_init_fn *init_function)
 206 {
 207     struct provider_store_st *store = NULL;
 208     OSSL_PROVIDER *prov = NULL;
 209
 210     if ((store = get_provider_store(libctx)) == NULL)
 211         return NULL;
 212
 213     if ((prov = ossl_provider_find(libctx, name)) != NULL) { /* refcount +1 */
 214         ossl_provider_free(prov); /* refcount -1 */
 215         CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_NEW,
 216                   CRYPTO_R_PROVIDER_ALREADY_EXISTS);
 217         ERR_add_error_data(2, "name=", name);
 218         return NULL;
 219     }
 220
 221     /* provider_new() generates an error, so no need here */
 222     if ((prov = provider_new(name, init_function)) == NULL)
 223         return NULL;
 224
 225     CRYPTO_THREAD_write_lock(store->lock);
 226     if (!ossl_provider_upref(prov)) { /* +1 One reference for the store */
 227         ossl_provider_free(prov); /* -1 Reference that was to be returned */
 228         prov = NULL;
 229     } else if (sk_OSSL_PROVIDER_push(store->providers, prov) == 0) {
 230         ossl_provider_free(prov); /* -1 Store reference */
 231         ossl_provider_free(prov); /* -1 Reference that was to be returned */
 232         prov = NULL;
 233     } else {
 234         prov->libctx = libctx;
 235         prov->store = store;
 236     }
 237     CRYPTO_THREAD_unlock(store->lock);
 238
 239     if (prov == NULL)
 240         CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_NEW, ERR_R_MALLOC_FAILURE);
 241
 242     /*
 243      * At this point, the provider is only partially "loaded".  To be
 244      * fully "loaded", ossl_provider_activate() must also be called.
 245      */
 246
 247     return prov;
 248 }
 249
 250 static void free_infopair(INFOPAIR *pair)
 251 {
 252     OPENSSL_free(pair->name);
 253     OPENSSL_free(pair->value);
 254     OPENSSL_free(pair);
 255 }
 256
 257 void ossl_provider_free(OSSL_PROVIDER *prov)
 258 {
 259     if (prov != NULL) {
 260         int ref = 0;
 261
 262         CRYPTO_DOWN_REF(&prov->refcnt, &ref, prov->refcnt_lock);
 263
 264         /*
 265          * When the refcount drops below two, the store is the only
 266          * possible reference, or it has already been taken away from
 267          * the store (this may happen if a provider was activated
 268          * because it's a fallback, but isn't currently used)
 269          * When that happens, the provider is inactivated.
 270          */
 271         if (ref < 2 && prov->flag_initialized) {
 272             if (prov->teardown != NULL)
 273                 prov->teardown(prov->provctx);
 274             prov->flag_initialized = 0;
 275         }
 276
 277         /*
 278          * When the refcount drops to zero, it has been taken out of
 279          * the store.  All we have to do here is clean it out.
 280          */
 281         if (ref == 0) {
 282 #ifndef FIPS_MODE
 283             DSO_free(prov->module);
 284 #endif
 285             OPENSSL_free(prov->name);
 286             OPENSSL_free(prov->path);
 287             sk_INFOPAIR_pop_free(prov->parameters, free_infopair);
 288 #ifndef HAVE_ATOMICS
 289             CRYPTO_THREAD_lock_free(prov->refcnt_lock);
 290 #endif
 291             OPENSSL_free(prov);
 292         }
 293     }
 294 }
 295
 296 /* Setters */
 297 int ossl_provider_set_module_path(OSSL_PROVIDER *prov, const char *module_path)
 298 {
 299     OPENSSL_free(prov->path);
 300     if (module_path == NULL)
 301         return 1;
 302     if ((prov->path = OPENSSL_strdup(module_path)) != NULL)
 303         return 1;
 304     CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_SET_MODULE_PATH, ERR_R_MALLOC_FAILURE);
 305     return 0;
 306 }
 307
 308 int ossl_provider_add_parameter(OSSL_PROVIDER *prov,
 309                                 const char *name, const char *value)
 310 {
 311     INFOPAIR *pair = NULL;
 312
 313     if ((pair = OPENSSL_zalloc(sizeof(*pair))) != NULL
 314         && (prov->parameters != NULL
 315             || (prov->parameters = sk_INFOPAIR_new_null()) != NULL)
 316         && (pair->name = OPENSSL_strdup(name)) != NULL
 317         && (pair->value = OPENSSL_strdup(value)) != NULL
 318         && sk_INFOPAIR_push(prov->parameters, pair) > 0)
 319         return 1;
 320
 321     if (pair != NULL) {
 322         OPENSSL_free(pair->name);
 323         OPENSSL_free(pair->value);
 324         OPENSSL_free(pair);
 325     }
 326     CRYPTOerr(CRYPTO_F_OSSL_PROVIDER_ADD_PARAMETER, ERR_R_MALLOC_FAILURE);
 327     return 0;
 328 }
 329
 330 /*
 331  * Provider activation.
 332  *
 333  * What "activation" means depends on the provider form; for built in
 334  * providers (in the library or the application alike), the provider
 335  * can already be considered to be loaded, all that's needed is to
 336  * initialize it.  However, for dynamically loadable provider modules,
 337  * we must first load that module.
 338  *
 339  * Built in modules are distinguished from dynamically loaded modules
 340  * with an already assigned init function.
 341  */
 342 static const OSSL_DISPATCH *core_dispatch; /* Define further down */
 343
 344 /*
 345  * Internal version that doesn't affect the store flags, and thereby avoid
 346  * locking.  Direct callers must remember to set the store flags when
 347  * appropriate.
 348  */
 349 static int provider_activate(OSSL_PROVIDER *prov)
 350 {
 351     const OSSL_DISPATCH *provider_dispatch = NULL;
 352
 353     if (prov->flag_initialized)
 354         return 1;
 355
 356     /*
 357      * If the init function isn't set, it indicates that this provider is
 358      * a loadable module.
 359      */
 360     if (prov->init_function == NULL) {
 361 #ifdef FIPS_MODE
 362         return 0;
 363 #else
 364         if (prov->module == NULL) {
 365             char *allocated_path = NULL;
 366             const char *module_path = NULL;
 367             char *merged_path = NULL;
 368             const char *load_dir = ossl_safe_getenv("OPENSSL_MODULES");
 369
 370             if ((prov->module = DSO_new()) == NULL) {
 371                 /* DSO_new() generates an error already */
 372                 return 0;
 373             }
 374
 375             if (load_dir == NULL)
 376                 load_dir = MODULESDIR;
 377
 378             DSO_ctrl(prov->module, DSO_CTRL_SET_FLAGS,
 379                      DSO_FLAG_NAME_TRANSLATION_EXT_ONLY, NULL);
 380
 381             module_path = prov->path;
 382             if (module_path == NULL)
 383                 module_path = allocated_path =
 384                     DSO_convert_filename(prov->module, prov->name);
 385             if (module_path != NULL)
 386                 merged_path = DSO_merge(prov->module, module_path, load_dir);
 387
 388             if (merged_path == NULL
 389                 || (DSO_load(prov->module, merged_path, NULL, 0)) == NULL) {
 390                 DSO_free(prov->module);
 391                 prov->module = NULL;
 392             }
 393
 394             OPENSSL_free(merged_path);
 395             OPENSSL_free(allocated_path);
 396         }
 397
 398         if (prov->module != NULL)
 399             prov->init_function = (OSSL_provider_init_fn *)
 400                 DSO_bind_func(prov->module, "OSSL_provider_init");
 401 #endif
 402     }
 403
 404     /* Call the initialise function for the provider. */
 405     if (prov->init_function == NULL
 406         || !prov->init_function(prov, core_dispatch, &provider_dispatch,
 407                                 &prov->provctx)) {
 408         CRYPTOerr(CRYPTO_F_PROVIDER_ACTIVATE, ERR_R_INIT_FAIL);
 409         ERR_add_error_data(2, "name=", prov->name);
 410 #ifndef FIPS_MODE
 411         DSO_free(prov->module);
 412         prov->module = NULL;
 413 #endif
 414         return 0;
 415     }
 416
 417     for (; provider_dispatch->function_id != 0; provider_dispatch++) {
 418         switch (provider_dispatch->function_id) {
 419         case OSSL_FUNC_PROVIDER_TEARDOWN:
 420             prov->teardown =
 421                 OSSL_get_provider_teardown(provider_dispatch);
 422             break;
 423         case OSSL_FUNC_PROVIDER_GET_PARAM_TYPES:
 424             prov->get_param_types =
 425                 OSSL_get_provider_get_param_types(provider_dispatch);
 426             break;
 427         case OSSL_FUNC_PROVIDER_GET_PARAMS:
 428             prov->get_params =
 429                 OSSL_get_provider_get_params(provider_dispatch);
 430             break;
 431         case OSSL_FUNC_PROVIDER_QUERY_OPERATION:
 432             prov->query_operation =
 433                 OSSL_get_provider_query_operation(provider_dispatch);
 434             break;
 435         }
 436     }
 437
 438     /* With this flag set, this provider has become fully "loaded". */
 439     prov->flag_initialized = 1;
 440
 441     return 1;
 442 }
 443
 444 int ossl_provider_activate(OSSL_PROVIDER *prov)
 445 {
 446     if (provider_activate(prov)) {
 447         CRYPTO_THREAD_write_lock(prov->store->lock);
 448         prov->store->use_fallbacks = 0;
 449         CRYPTO_THREAD_unlock(prov->store->lock);
 450         return 1;
 451     }
 452
 453     return 0;
 454 }
 455
 456 void *ossl_provider_ctx(const OSSL_PROVIDER *prov)
 457 {
 458     return prov->provctx;
 459 }
 460
 461
 462 static int provider_forall_loaded(struct provider_store_st *store,
 463                                   int *found_activated,
 464                                   int (*cb)(OSSL_PROVIDER *provider,
 465                                             void *cbdata),
 466                                   void *cbdata)
 467 {
 468     int i;
 469     int ret = 1;
 470     int num_provs = sk_OSSL_PROVIDER_num(store->providers);
 471
 472     if (found_activated != NULL)
 473         *found_activated = 0;
 474     for (i = 0; i < num_provs; i++) {
 475         OSSL_PROVIDER *prov =
 476             sk_OSSL_PROVIDER_value(store->providers, i);
 477
 478         if (prov->flag_initialized) {
 479             if (found_activated != NULL)
 480                 *found_activated = 1;
 481             if (!(ret = cb(prov, cbdata)))
 482                 break;
 483         }
 484     }
 485
 486     return ret;
 487 }
 488
 489 int ossl_provider_forall_loaded(OPENSSL_CTX *ctx,
 490                                 int (*cb)(OSSL_PROVIDER *provider,
 491                                           void *cbdata),
 492                                 void *cbdata)
 493 {
 494     int ret = 1;
 495     int i;
 496     struct provider_store_st *store = get_provider_store(ctx);
 497
 498     if (store != NULL) {
 499         int found_activated = 0;
 500
 501         CRYPTO_THREAD_read_lock(store->lock);
 502         ret = provider_forall_loaded(store, &found_activated, cb, cbdata);
 503
 504         /*
 505          * If there's nothing activated ever in this store, try to activate
 506          * all fallbacks.
 507          */
 508         if (!found_activated && store->use_fallbacks) {
 509             int num_provs = sk_OSSL_PROVIDER_num(store->providers);
 510             int activated_fallback_count = 0;
 511
 512             for (i = 0; i < num_provs; i++) {
 513                 OSSL_PROVIDER *prov =
 514                     sk_OSSL_PROVIDER_value(store->providers, i);
 515
 516                 /*
 517                  * Note that we don't care if the activation succeeds or
 518                  * not.  If it doesn't succeed, then the next loop will
 519                  * fail anyway.
 520                  */
 521                 if (prov->flag_fallback) {
 522                     activated_fallback_count++;
 523                     provider_activate(prov);
 524                 }
 525             }
 526
 527             if (activated_fallback_count > 0) {
 528                 /*
 529                  * We assume that all fallbacks have been added to the store
 530                  * before any fallback is activated.
 531                  * TODO: We may have to reconsider this, IF we find ourselves
 532                  * adding fallbacks after any previous fallback has been
 533                  * activated.
 534                  */
 535                 store->use_fallbacks = 0;
 536
 537                 /*
 538                  * Now that we've activated available fallbacks, try a
 539                  * second sweep
 540                  */
 541                 ret = provider_forall_loaded(store, NULL, cb, cbdata);
 542             }
 543         }
 544         CRYPTO_THREAD_unlock(store->lock);
 545     }
 546
 547     return ret;
 548 }
 549
 550 /* Setters of Provider Object data */
 551 int ossl_provider_set_fallback(OSSL_PROVIDER *prov)
 552 {
 553     if (prov == NULL)
 554         return 0;
 555
 556     prov->flag_fallback = 1;
 557     return 1;
 558 }
 559
 560 /* Getters of Provider Object data */
 561 const char *ossl_provider_name(const OSSL_PROVIDER *prov)
 562 {
 563     return prov->name;
 564 }
 565
 566 const DSO *ossl_provider_dso(const OSSL_PROVIDER *prov)
 567 {
 568     return prov->module;
 569 }
 570
 571 const char *ossl_provider_module_name(const OSSL_PROVIDER *prov)
 572 {
 573 #ifdef FIPS_MODE
 574     return NULL;
 575 #else
 576     return DSO_get_filename(prov->module);
 577 #endif
 578 }
 579
 580 const char *ossl_provider_module_path(const OSSL_PROVIDER *prov)
 581 {
 582 #ifdef FIPS_MODE
 583     return NULL;
 584 #else
 585     /* FIXME: Ensure it's a full path */
 586     return DSO_get_filename(prov->module);
 587 #endif
 588 }
 589
 590 /* Wrappers around calls to the provider */
 591 void ossl_provider_teardown(const OSSL_PROVIDER *prov)
 592 {
 593     if (prov->teardown != NULL)
 594         prov->teardown(prov->provctx);
 595 }
 596
 597 const OSSL_ITEM *ossl_provider_get_param_types(const OSSL_PROVIDER *prov)
 598 {
 599     return prov->get_param_types == NULL
 600         ? NULL : prov->get_param_types(prov->provctx);
 601 }
 602
 603 int ossl_provider_get_params(const OSSL_PROVIDER *prov,
 604                              const OSSL_PARAM params[])
 605 {
 606     return prov->get_params == NULL
 607         ? 0 : prov->get_params(prov->provctx, params);
 608 }
 609
 610
 611 const OSSL_ALGORITHM *ossl_provider_query_operation(const OSSL_PROVIDER *prov,
 612                                                     int operation_id,
 613                                                     int *no_cache)
 614 {
 615     return prov->query_operation(prov->provctx, operation_id, no_cache);
 616 }
 617
 618 /*-
 619  * Core functions for the provider
 620  * ===============================
 621  *
 622  * This is the set of functions that the core makes available to the provider
 623  */
 624
 625 /*
 626  * This returns a list of Provider Object parameters with their types, for
 627  * discovery.  We do not expect that many providers will use this, but one
 628  * never knows.
 629  */
 630 static const OSSL_ITEM param_types[] = {
 631     { OSSL_PARAM_UTF8_PTR, "openssl-version" },
 632     { OSSL_PARAM_UTF8_PTR, "provider-name" },
 633     { 0, NULL }
 634 };
 635
 636 static const OSSL_ITEM *core_get_param_types(const OSSL_PROVIDER *prov)
 637 {
 638     return param_types;
 639 }
 640
 641 static int core_get_params(const OSSL_PROVIDER *prov, const OSSL_PARAM params[])
 642 {
 643     int i;
 644     const OSSL_PARAM *p;
 645
 646     if ((p = OSSL_PARAM_locate(params, "openssl-version")) != NULL)
 647         OSSL_PARAM_set_utf8_ptr(p, OPENSSL_VERSION_STR);
 648     if ((p = OSSL_PARAM_locate(params, "provider-name")) != NULL)
 649         OSSL_PARAM_set_utf8_ptr(p, prov->name);
 650
 651     if (prov->parameters == NULL)
 652         return 1;
 653
 654     for (i = 0; i < sk_INFOPAIR_num(prov->parameters); i++) {
 655         INFOPAIR *pair = sk_INFOPAIR_value(prov->parameters, i);
 656
 657         if ((p = OSSL_PARAM_locate(params, pair->name)) != NULL)
 658             OSSL_PARAM_set_utf8_ptr(p, pair->value);
 659     }
 660
 661     return 1;
 662 }
 663
 664 static OSSL_core_get_library_context_fn core_get_libctx; /* Check */
 665 static OPENSSL_CTX *core_get_libctx(const OSSL_PROVIDER *prov)
 666 {
 667     return prov->libctx;
 668 }
 669
 670 static const OSSL_DISPATCH core_dispatch_[] = {
 671     { OSSL_FUNC_CORE_GET_PARAM_TYPES, (void (*)(void))core_get_param_types },
 672     { OSSL_FUNC_CORE_GET_PARAMS, (void (*)(void))core_get_params },
 673     { OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT, (void (*)(void))core_get_libctx },
 674     { OSSL_FUNC_CORE_PUT_ERROR, (void (*)(void))ERR_put_error },
 675     { OSSL_FUNC_CORE_ADD_ERROR_VDATA, (void (*)(void))ERR_add_error_vdata },
 676     { 0, NULL }
 677 };
 678 static const OSSL_DISPATCH *core_dispatch = core_dispatch_;