crypto/engine/eng_list.c

   1 /* crypto/engine/engine_list.c */
   2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <openssl/crypto.h>
  60 #include "cryptlib.h"
  61 #include "eng_int.h"
  62 #include <openssl/engine.h>
  63
  64 /* The linked-list of pointers to engine types. engine_list_head
  65  * incorporates an implicit structural reference but engine_list_tail
  66  * does not - the latter is a computational niceity and only points
  67  * to something that is already pointed to by its predecessor in the
  68  * list (or engine_list_head itself). In the same way, the use of the
  69  * "prev" pointer in each ENGINE is to save excessive list iteration,
  70  * it doesn't correspond to an extra structural reference. Hence,
  71  * engine_list_head, and each non-null "next" pointer account for
  72  * the list itself assuming exactly 1 structural reference on each
  73  * list member. */
  74 static ENGINE *engine_list_head = NULL;
  75 static ENGINE *engine_list_tail = NULL;
  76 /* A boolean switch, used to ensure we only initialise once. This
  77  * is needed because the engine list may genuinely become empty during
  78  * use (so we can't use engine_list_head as an indicator for example. */
  79 static int engine_list_flag = 0;
  80 static int ENGINE_free_util(ENGINE *e, int locked);
  81
  82 /* These static functions starting with a lower case "engine_" always
  83  * take place when CRYPTO_LOCK_ENGINE has been locked up. */
  84 static int engine_list_add(ENGINE *e)
  85         {
  86         int conflict = 0;
  87         ENGINE *iterator = NULL;
  88
  89         if(e == NULL)
  90                 {
  91                 ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
  92                         ERR_R_PASSED_NULL_PARAMETER);
  93                 return 0;
  94                 }
  95         iterator = engine_list_head;
  96         while(iterator && !conflict)
  97                 {
  98                 conflict = (strcmp(iterator->id, e->id) == 0);
  99                 iterator = iterator->next;
 100                 }
 101         if(conflict)
 102                 {
 103                 ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
 104                         ENGINE_R_CONFLICTING_ENGINE_ID);
 105                 return 0;
 106                 }
 107         if(engine_list_head == NULL)
 108                 {
 109                 /* We are adding to an empty list. */
 110                 if(engine_list_tail)
 111                         {
 112                         ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
 113                                 ENGINE_R_INTERNAL_LIST_ERROR);
 114                         return 0;
 115                         }
 116                 engine_list_head = e;
 117                 e->prev = NULL;
 118                 }
 119         else
 120                 {
 121                 /* We are adding to the tail of an existing list. */
 122                 if((engine_list_tail == NULL) ||
 123                                 (engine_list_tail->next != NULL))
 124                         {
 125                         ENGINEerr(ENGINE_F_ENGINE_LIST_ADD,
 126                                 ENGINE_R_INTERNAL_LIST_ERROR);
 127                         return 0;
 128                         }
 129                 engine_list_tail->next = e;
 130                 e->prev = engine_list_tail;
 131                 }
 132         /* Having the engine in the list assumes a structural
 133          * reference. */
 134         e->struct_ref++;
 135         engine_ref_debug(e, 0, 1)
 136         /* However it came to be, e is the last item in the list. */
 137         engine_list_tail = e;
 138         e->next = NULL;
 139         return 1;
 140         }
 141
 142 static int engine_list_remove(ENGINE *e)
 143         {
 144         ENGINE *iterator;
 145
 146         if(e == NULL)
 147                 {
 148                 ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE,
 149                         ERR_R_PASSED_NULL_PARAMETER);
 150                 return 0;
 151                 }
 152         /* We need to check that e is in our linked list! */
 153         iterator = engine_list_head;
 154         while(iterator && (iterator != e))
 155                 iterator = iterator->next;
 156         if(iterator == NULL)
 157                 {
 158                 ENGINEerr(ENGINE_F_ENGINE_LIST_REMOVE,
 159                         ENGINE_R_ENGINE_IS_NOT_IN_LIST);
 160                 return 0;
 161                 }
 162         /* un-link e from the chain. */
 163         if(e->next)
 164                 e->next->prev = e->prev;
 165         if(e->prev)
 166                 e->prev->next = e->next;
 167         /* Correct our head/tail if necessary. */
 168         if(engine_list_head == e)
 169                 engine_list_head = e->next;
 170         if(engine_list_tail == e)
 171                 engine_list_tail = e->prev;
 172         ENGINE_free_util(e, 0);
 173         return 1;
 174         }
 175
 176 /* This check always takes place with CRYPTO_LOCK_ENGINE locked up
 177  * so we're synchronised, but we can't call anything that tries to
 178  * lock it again! :-) NB: For convenience (and code-clarity) we
 179  * don't output errors for failures of the engine_list_add function
 180  * as it will generate errors itself. */
 181 static int engine_internal_check(void)
 182         {
 183         int toret = 1;
 184         ENGINE *def_engine1, *def_engine2;
 185         if(engine_list_flag)
 186                 return 1;
 187         /* This is our first time up, we need to populate the list
 188          * with our statically compiled-in engines. */
 189         def_engine1 = ENGINE_openssl();
 190         def_engine2 = ENGINE_dynamic();
 191         if(!engine_list_add(def_engine1) ||
 192                         !engine_list_add(def_engine2))
 193                 toret = 0;
 194         else
 195                 engine_list_flag = 1;
 196         ENGINE_free_util(def_engine1, 0);
 197         ENGINE_free_util(def_engine2, 0);
 198         return 1;
 199         }
 200
 201 /* Get the first/last "ENGINE" type available. */
 202 ENGINE *ENGINE_get_first(void)
 203         {
 204         ENGINE *ret = NULL;
 205
 206         CRYPTO_r_lock(CRYPTO_LOCK_ENGINE);
 207         if(engine_internal_check())
 208                 {
 209                 ret = engine_list_head;
 210                 if(ret)
 211                         {
 212                         ret->struct_ref++;
 213                         engine_ref_debug(ret, 0, 1)
 214                         }
 215                 }
 216         CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE);
 217         return ret;
 218         }
 219 ENGINE *ENGINE_get_last(void)
 220         {
 221         ENGINE *ret = NULL;
 222
 223         CRYPTO_r_lock(CRYPTO_LOCK_ENGINE);
 224         if(engine_internal_check())
 225                 {
 226                 ret = engine_list_tail;
 227                 if(ret)
 228                         {
 229                         ret->struct_ref++;
 230                         engine_ref_debug(ret, 0, 1)
 231                         }
 232                 }
 233         CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE);
 234         return ret;
 235         }
 236
 237 /* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */
 238 ENGINE *ENGINE_get_next(ENGINE *e)
 239         {
 240         ENGINE *ret = NULL;
 241         if(e == NULL)
 242                 {
 243                 ENGINEerr(ENGINE_F_ENGINE_GET_NEXT,
 244                         ERR_R_PASSED_NULL_PARAMETER);
 245                 return 0;
 246                 }
 247         CRYPTO_r_lock(CRYPTO_LOCK_ENGINE);
 248         ret = e->next;
 249         if(ret)
 250                 {
 251                 /* Return a valid structural refernce to the next ENGINE */
 252                 ret->struct_ref++;
 253                 engine_ref_debug(ret, 0, 1)
 254                 }
 255         CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE);
 256         /* Release the structural reference to the previous ENGINE */
 257         ENGINE_free(e);
 258         return ret;
 259         }
 260 ENGINE *ENGINE_get_prev(ENGINE *e)
 261         {
 262         ENGINE *ret = NULL;
 263         if(e == NULL)
 264                 {
 265                 ENGINEerr(ENGINE_F_ENGINE_GET_PREV,
 266                         ERR_R_PASSED_NULL_PARAMETER);
 267                 return 0;
 268                 }
 269         CRYPTO_r_lock(CRYPTO_LOCK_ENGINE);
 270         ret = e->prev;
 271         if(ret)
 272                 {
 273                 /* Return a valid structural reference to the next ENGINE */
 274                 ret->struct_ref++;
 275                 engine_ref_debug(ret, 0, 1)
 276                 }
 277         CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE);
 278         /* Release the structural reference to the previous ENGINE */
 279         ENGINE_free(e);
 280         return ret;
 281         }
 282
 283 /* Add another "ENGINE" type into the list. */
 284 int ENGINE_add(ENGINE *e)
 285         {
 286         int to_return = 1;
 287         if(e == NULL)
 288                 {
 289                 ENGINEerr(ENGINE_F_ENGINE_ADD,
 290                         ERR_R_PASSED_NULL_PARAMETER);
 291                 return 0;
 292                 }
 293         if((e->id == NULL) || (e->name == NULL))
 294                 {
 295                 ENGINEerr(ENGINE_F_ENGINE_ADD,
 296                         ENGINE_R_ID_OR_NAME_MISSING);
 297                 }
 298         CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
 299         if(!engine_internal_check() || !engine_list_add(e))
 300                 {
 301                 ENGINEerr(ENGINE_F_ENGINE_ADD,
 302                         ENGINE_R_INTERNAL_LIST_ERROR);
 303                 to_return = 0;
 304                 }
 305         CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
 306         return to_return;
 307         }
 308
 309 /* Remove an existing "ENGINE" type from the array. */
 310 int ENGINE_remove(ENGINE *e)
 311         {
 312         int to_return = 1;
 313         if(e == NULL)
 314                 {
 315                 ENGINEerr(ENGINE_F_ENGINE_REMOVE,
 316                         ERR_R_PASSED_NULL_PARAMETER);
 317                 return 0;
 318                 }
 319         CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
 320         if(!engine_internal_check() || !engine_list_remove(e))
 321                 {
 322                 ENGINEerr(ENGINE_F_ENGINE_REMOVE,
 323                         ENGINE_R_INTERNAL_LIST_ERROR);
 324                 to_return = 0;
 325                 }
 326         CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
 327         return to_return;
 328         }
 329
 330 ENGINE *ENGINE_by_id(const char *id)
 331         {
 332         ENGINE *iterator = NULL, *cp = NULL;
 333         if(id == NULL)
 334                 {
 335                 ENGINEerr(ENGINE_F_ENGINE_BY_ID,
 336                         ERR_R_PASSED_NULL_PARAMETER);
 337                 return NULL;
 338                 }
 339         CRYPTO_r_lock(CRYPTO_LOCK_ENGINE);
 340         if(!engine_internal_check())
 341                 ENGINEerr(ENGINE_F_ENGINE_BY_ID,
 342                         ENGINE_R_INTERNAL_LIST_ERROR);
 343         else
 344                 {
 345                 iterator = engine_list_head;
 346                 while(iterator && (strcmp(id, iterator->id) != 0))
 347                         iterator = iterator->next;
 348                 if(iterator)
 349                         {
 350                         /* We need to return a structural reference. If this is
 351                          * a "dynamic" ENGINE type, make a duplicate - otherwise
 352                          * increment the existing ENGINE's reference count. */
 353                         if(iterator->flags & ENGINE_FLAGS_BY_ID_COPY)
 354                                 {
 355                                 cp = ENGINE_new();
 356                                 if(!cp)
 357                                         iterator = NULL;
 358                                 else
 359                                         {
 360                                         ENGINE_cpy(cp, iterator);
 361                                         iterator = cp;
 362                                         }
 363                                 }
 364                         else
 365                                 {
 366                                 iterator->struct_ref++;
 367                                 engine_ref_debug(iterator, 0, 1)
 368                                 }
 369                         }
 370                 }
 371         CRYPTO_r_unlock(CRYPTO_LOCK_ENGINE);
 372         if(iterator == NULL)
 373                 ENGINEerr(ENGINE_F_ENGINE_BY_ID,
 374                         ENGINE_R_NO_SUCH_ENGINE);
 375         return iterator;
 376         }
 377
 378 ENGINE *ENGINE_new(void)
 379         {
 380         ENGINE *ret;
 381
 382         ret = (ENGINE *)OPENSSL_malloc(sizeof(ENGINE));
 383         if(ret == NULL)
 384                 {
 385                 ENGINEerr(ENGINE_F_ENGINE_NEW, ERR_R_MALLOC_FAILURE);
 386                 return NULL;
 387                 }
 388         memset(ret, 0, sizeof(ENGINE));
 389         ret->struct_ref = 1;
 390         engine_ref_debug(ret, 0, 1)
 391         CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ENGINE, ret, &ret->ex_data);
 392         return ret;
 393         }
 394
 395 static int ENGINE_free_util(ENGINE *e, int locked)
 396         {
 397         int i;
 398
 399         if(e == NULL)
 400                 {
 401                 ENGINEerr(ENGINE_F_ENGINE_FREE,
 402                         ERR_R_PASSED_NULL_PARAMETER);
 403                 return 0;
 404                 }
 405         if(locked)
 406                 i = CRYPTO_add(&e->struct_ref,-1,CRYPTO_LOCK_ENGINE);
 407         else
 408                 i = --e->struct_ref;
 409         engine_ref_debug(e, 0, -1)
 410         if (i > 0) return 1;
 411 #ifdef REF_CHECK
 412         if (i < 0)
 413                 {
 414                 fprintf(stderr,"ENGINE_free, bad structural reference count\n");
 415                 abort();
 416                 }
 417 #endif
 418         /* Give the ENGINE a chance to do any structural cleanup corresponding
 419          * to allocation it did in its constructor (eg. unload error strings) */
 420         if(e->destroy)
 421                 e->destroy(e);
 422         sk_ENGINE_EVP_CIPHER_pop_free(e->ciphers,ENGINE_free_engine_cipher);
 423         CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ENGINE, e, &e->ex_data);
 424         OPENSSL_free(e);
 425         return 1;
 426         }
 427
 428 int ENGINE_free(ENGINE *e)
 429         {
 430         return ENGINE_free_util(e, 1);
 431         }
 432
 433 int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 434                 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
 435         {
 436         return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ENGINE, argl, argp,
 437                         new_func, dup_func, free_func);
 438         }
 439
 440 int ENGINE_set_ex_data(ENGINE *e, int idx, void *arg)
 441         {
 442         return(CRYPTO_set_ex_data(&e->ex_data, idx, arg));
 443         }
 444
 445 void *ENGINE_get_ex_data(const ENGINE *e, int idx)
 446         {
 447         return(CRYPTO_get_ex_data(&e->ex_data, idx));
 448         }
 449
 450 void ENGINE_cleanup(void)
 451         {
 452         ENGINE *iterator = engine_list_head;
 453
 454         while(iterator != NULL)
 455                 {
 456                 ENGINE_remove(iterator);
 457                 iterator = engine_list_head;
 458                 }
 459         engine_list_flag = 0;
 460         /* Also unset any "default" ENGINEs that may have been set up (a default
 461          * constitutes a functional reference on an ENGINE and there's one for
 462          * each algorithm). */
 463         ENGINE_clear_defaults();
 464         return;
 465         }
 466
 467 int ENGINE_set_id(ENGINE *e, const char *id)
 468         {
 469         if(id == NULL)
 470                 {
 471                 ENGINEerr(ENGINE_F_ENGINE_SET_ID,
 472                         ERR_R_PASSED_NULL_PARAMETER);
 473                 return 0;
 474                 }
 475         e->id = id;
 476         return 1;
 477         }
 478
 479 int ENGINE_set_name(ENGINE *e, const char *name)
 480         {
 481         if(name == NULL)
 482                 {
 483                 ENGINEerr(ENGINE_F_ENGINE_SET_NAME,
 484                         ERR_R_PASSED_NULL_PARAMETER);
 485                 return 0;
 486                 }
 487         e->name = name;
 488         return 1;
 489         }
 490
 491 int ENGINE_set_RSA(ENGINE *e, const RSA_METHOD *rsa_meth)
 492         {
 493 #ifndef OPENSSL_NO_RSA
 494         e->rsa_meth = rsa_meth;
 495         return 1;
 496 #else
 497         return 0;
 498 #endif
 499         }
 500
 501 int ENGINE_set_DSA(ENGINE *e, const DSA_METHOD *dsa_meth)
 502         {
 503 #ifndef OPENSSL_NO_DSA
 504         e->dsa_meth = dsa_meth;
 505         return 1;
 506 #else
 507         return 0;
 508 #endif
 509         }
 510
 511 int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth)
 512         {
 513 #ifndef OPENSSL_NO_DH
 514         e->dh_meth = dh_meth;
 515         return 1;
 516 #else
 517         return 0;
 518 #endif
 519         }
 520
 521 int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth)
 522         {
 523         e->rand_meth = rand_meth;
 524         return 1;
 525         }
 526
 527 int ENGINE_set_BN_mod_exp(ENGINE *e, BN_MOD_EXP bn_mod_exp)
 528         {
 529         e->bn_mod_exp = bn_mod_exp;
 530         return 1;
 531         }
 532
 533 int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt)
 534         {
 535         e->bn_mod_exp_crt = bn_mod_exp_crt;
 536         return 1;
 537         }
 538
 539 int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f)
 540         {
 541         e->destroy = destroy_f;
 542         return 1;
 543         }
 544
 545 int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f)
 546         {
 547         e->init = init_f;
 548         return 1;
 549         }
 550
 551 int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f)
 552         {
 553         e->finish = finish_f;
 554         return 1;
 555         }
 556
 557 int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f)
 558         {
 559         e->ctrl = ctrl_f;
 560         return 1;
 561         }
 562
 563 int ENGINE_set_load_privkey_function(ENGINE *e, ENGINE_LOAD_KEY_PTR loadpriv_f)
 564         {
 565         e->load_privkey = loadpriv_f;
 566         return 1;
 567         }
 568
 569 int ENGINE_set_load_pubkey_function(ENGINE *e, ENGINE_LOAD_KEY_PTR loadpub_f)
 570         {
 571         e->load_pubkey = loadpub_f;
 572         return 1;
 573         }
 574
 575 int ENGINE_set_flags(ENGINE *e, int flags)
 576         {
 577         e->flags = flags;
 578         return 1;
 579         }
 580
 581 int ENGINE_set_cmd_defns(ENGINE *e, const ENGINE_CMD_DEFN *defns)
 582         {
 583         e->cmd_defns = defns;
 584         return 1;
 585         }
 586
 587 int ENGINE_cpy(ENGINE *dest, const ENGINE *src)
 588         {
 589         if(ENGINE_set_id(dest, ENGINE_get_id(src)) &&
 590                         ENGINE_set_name(dest, ENGINE_get_name(src)) &&
 591 #ifndef OPENSSL_NO_RSA
 592                         ENGINE_set_RSA(dest, ENGINE_get_RSA(src)) &&
 593 #endif
 594 #ifndef OPENSSL_NO_DSA
 595                         ENGINE_set_DSA(dest, ENGINE_get_DSA(src)) &&
 596 #endif
 597 #ifndef OPENSSL_NO_DH
 598                         ENGINE_set_DH(dest, ENGINE_get_DH(src)) &&
 599 #endif
 600                         ENGINE_set_RAND(dest, ENGINE_get_RAND(src)) &&
 601                         ENGINE_set_BN_mod_exp(dest,
 602                                         ENGINE_get_BN_mod_exp(src)) &&
 603                         ENGINE_set_BN_mod_exp_crt(dest,
 604                                         ENGINE_get_BN_mod_exp_crt(src)) &&
 605                         ENGINE_set_init_function(dest,
 606                                         ENGINE_get_init_function(src)) &&
 607                         ENGINE_set_finish_function(dest,
 608                                         ENGINE_get_finish_function(src)) &&
 609                         ENGINE_set_ctrl_function(dest,
 610                                         ENGINE_get_ctrl_function(src)) &&
 611                         ENGINE_set_load_privkey_function(dest,
 612                                         ENGINE_get_load_privkey_function(src)) &&
 613                         ENGINE_set_load_pubkey_function(dest,
 614                                         ENGINE_get_load_pubkey_function(src)) &&
 615                         ENGINE_set_flags(dest, ENGINE_get_flags(src)) &&
 616                         ENGINE_set_cmd_defns(dest, ENGINE_get_cmd_defns(src)))
 617                 return 1;
 618         return 0;
 619         }
 620
 621 const char *ENGINE_get_id(const ENGINE *e)
 622         {
 623         return e->id;
 624         }
 625
 626 const char *ENGINE_get_name(const ENGINE *e)
 627         {
 628         return e->name;
 629         }
 630
 631 const RSA_METHOD *ENGINE_get_RSA(const ENGINE *e)
 632         {
 633         return e->rsa_meth;
 634         }
 635
 636 const DSA_METHOD *ENGINE_get_DSA(const ENGINE *e)
 637         {
 638         return e->dsa_meth;
 639         }
 640
 641 const DH_METHOD *ENGINE_get_DH(const ENGINE *e)
 642         {
 643         return e->dh_meth;
 644         }
 645
 646 const RAND_METHOD *ENGINE_get_RAND(const ENGINE *e)
 647         {
 648         return e->rand_meth;
 649         }
 650
 651 BN_MOD_EXP ENGINE_get_BN_mod_exp(const ENGINE *e)
 652         {
 653         return e->bn_mod_exp;
 654         }
 655
 656 BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(const ENGINE *e)
 657         {
 658         return e->bn_mod_exp_crt;
 659         }
 660
 661 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e)
 662         {
 663         return e->destroy;
 664         }
 665
 666 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e)
 667         {
 668         return e->init;
 669         }
 670
 671 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(const ENGINE *e)
 672         {
 673         return e->finish;
 674         }
 675
 676 ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(const ENGINE *e)
 677         {
 678         return e->ctrl;
 679         }
 680
 681 ENGINE_LOAD_KEY_PTR ENGINE_get_load_privkey_function(const ENGINE *e)
 682         {
 683         return e->load_privkey;
 684         }
 685
 686 ENGINE_LOAD_KEY_PTR ENGINE_get_load_pubkey_function(const ENGINE *e)
 687         {
 688         return e->load_pubkey;
 689         }
 690
 691 int ENGINE_get_flags(const ENGINE *e)
 692         {
 693         return e->flags;
 694         }
 695
 696 const ENGINE_CMD_DEFN *ENGINE_get_cmd_defns(const ENGINE *e)
 697         {
 698         return e->cmd_defns;
 699         }