apps/list.c

   1 /*
   2  * Copyright 1995-2019 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 <string.h>
  11 #include <openssl/evp.h>
  12 #include <openssl/err.h>
  13 #include <openssl/provider.h>
  14 #include <openssl/safestack.h>
  15 #include "apps.h"
  16 #include "progs.h"
  17 #include "opt.h"
  18
  19 static int verbose = 0;
  20
  21 static int describe_param_type(char *buf, size_t bufsz, const OSSL_PARAM *param)
  22 {
  23     const char *type_mod = "";
  24     const char *type = NULL;
  25     int show_type_number = 0;
  26     int printed_len;
  27
  28     switch (param->data_type) {
  29     case OSSL_PARAM_UNSIGNED_INTEGER:
  30         type_mod = "unsigned ";
  31         /* FALLTHRU */
  32     case OSSL_PARAM_INTEGER:
  33         type = "integer";
  34         break;
  35     case OSSL_PARAM_UTF8_PTR:
  36         type_mod = "pointer to a ";
  37         /* FALLTHRU */
  38     case OSSL_PARAM_UTF8_STRING:
  39         type = "UTF8 encoded string";
  40         break;
  41     case OSSL_PARAM_OCTET_PTR:
  42         type_mod = "pointer to an ";
  43         /* FALLTHRU */
  44     case OSSL_PARAM_OCTET_STRING:
  45         type = "octet string";
  46         break;
  47     default:
  48         type = "unknown type";
  49         show_type_number = 1;
  50         break;
  51     }
  52
  53     printed_len = BIO_snprintf(buf, bufsz, "%s: ", param->key);
  54     if (printed_len > 0) {
  55         buf += printed_len;
  56         bufsz -= printed_len;
  57     }
  58     printed_len = BIO_snprintf(buf, bufsz, "%s%s", type_mod, type);
  59     if (printed_len > 0) {
  60         buf += printed_len;
  61         bufsz -= printed_len;
  62     }
  63     if (show_type_number) {
  64         printed_len = BIO_snprintf(buf, bufsz, " [%d]", param->data_type);
  65         if (printed_len > 0) {
  66             buf += printed_len;
  67             bufsz -= printed_len;
  68         }
  69     }
  70     if (param->data_size == 0)
  71         printed_len = BIO_snprintf(buf, bufsz, " (arbitrary size)");
  72     else
  73         printed_len = BIO_snprintf(buf, bufsz, " (max %zu bytes large)",
  74                                    param->data_size);
  75     if (printed_len > 0) {
  76         buf += printed_len;
  77         bufsz -= printed_len;
  78     }
  79     *buf = '\0';
  80     return 1;
  81 }
  82
  83 static int print_param_types(const char *thing, const OSSL_PARAM *pdefs)
  84 {
  85     if (pdefs == NULL) {
  86         BIO_printf(bio_out, "    No declared %s\n", thing);
  87     } else if (pdefs->key == NULL) {
  88         /*
  89          * An empty list?  This shouldn't happen, but let's just make sure to
  90          * say something if there's a badly written provider...
  91          */
  92         BIO_printf(bio_out, "    Empty list of %s (!!!)\n", thing);
  93     } else {
  94         BIO_printf(bio_out, "    %s:\n", thing);
  95         for (; pdefs->key != NULL; pdefs++) {
  96             char buf[200];       /* This should be ample space */
  97
  98             describe_param_type(buf, sizeof(buf), pdefs);
  99             BIO_printf(bio_out, "      %s\n", buf);
 100         }
 101     }
 102     return 1;
 103 }
 104
 105 static void legacy_cipher_fn(const EVP_CIPHER *c,
 106                              const char *from, const char *to, void *arg)
 107 {
 108     if (c != NULL) {
 109         BIO_printf(arg, "  %s\n", EVP_CIPHER_name(c));
 110     } else {
 111         if (from == NULL)
 112             from = "<undefined>";
 113         if (to == NULL)
 114             to = "<undefined>";
 115         BIO_printf(arg, "  %s => %s\n", from, to);
 116     }
 117 }
 118
 119 DEFINE_STACK_OF(EVP_CIPHER)
 120 static int cipher_cmp(const EVP_CIPHER * const *a,
 121                       const EVP_CIPHER * const *b)
 122 {
 123     int ret = strcasecmp(EVP_CIPHER_name(*a), EVP_CIPHER_name(*b));
 124
 125     if (ret == 0)
 126         ret = strcmp(OSSL_PROVIDER_name(EVP_CIPHER_provider(*a)),
 127                      OSSL_PROVIDER_name(EVP_CIPHER_provider(*b)));
 128
 129     return ret;
 130 }
 131
 132 static void collect_ciphers(EVP_CIPHER *cipher, void *stack)
 133 {
 134     STACK_OF(EVP_CIPHER) *cipher_stack = stack;
 135
 136     sk_EVP_CIPHER_push(cipher_stack, cipher);
 137     EVP_CIPHER_up_ref(cipher);
 138 }
 139
 140 static void list_ciphers(void)
 141 {
 142     STACK_OF(EVP_CIPHER) *ciphers = sk_EVP_CIPHER_new(cipher_cmp);
 143     int i;
 144
 145     BIO_printf(bio_out, "Legacy:\n");
 146     EVP_CIPHER_do_all_sorted(legacy_cipher_fn, bio_out);
 147
 148     BIO_printf(bio_out, "Provided:\n");
 149     EVP_CIPHER_do_all_ex(NULL, collect_ciphers, ciphers);
 150     sk_EVP_CIPHER_sort(ciphers);
 151     for (i = 0; i < sk_EVP_CIPHER_num(ciphers); i++) {
 152         const EVP_CIPHER *c = sk_EVP_CIPHER_value(ciphers, i);
 153
 154         BIO_printf(bio_out, "  %s", EVP_CIPHER_name(c));
 155         BIO_printf(bio_out, " @ %s\n",
 156                    OSSL_PROVIDER_name(EVP_CIPHER_provider(c)));
 157         if (verbose) {
 158             print_param_types("retrievable algorithm parameters",
 159                               EVP_CIPHER_gettable_params(c));
 160             print_param_types("retrievable operation parameters",
 161                               EVP_CIPHER_CTX_gettable_params(c));
 162             print_param_types("settable operation parameters",
 163                               EVP_CIPHER_CTX_settable_params(c));
 164         }
 165     }
 166     sk_EVP_CIPHER_pop_free(ciphers, EVP_CIPHER_meth_free);
 167 }
 168
 169 static void list_md_fn(const EVP_MD *m,
 170                        const char *from, const char *to, void *arg)
 171 {
 172     if (m != NULL) {
 173         BIO_printf(arg, "  %s\n", EVP_MD_name(m));
 174     } else {
 175         if (from == NULL)
 176             from = "<undefined>";
 177         if (to == NULL)
 178             to = "<undefined>";
 179         BIO_printf((BIO *)arg, "  %s => %s\n", from, to);
 180     }
 181 }
 182
 183 DEFINE_STACK_OF(EVP_MD)
 184 static int md_cmp(const EVP_MD * const *a, const EVP_MD * const *b)
 185 {
 186     int ret = strcasecmp(EVP_MD_name(*a), EVP_MD_name(*b));
 187
 188     if (ret == 0)
 189         ret = strcmp(OSSL_PROVIDER_name(EVP_MD_provider(*a)),
 190                      OSSL_PROVIDER_name(EVP_MD_provider(*b)));
 191
 192     return ret;
 193 }
 194
 195 static void collect_digests(EVP_MD *md, void *stack)
 196 {
 197     STACK_OF(EVP_MD) *digest_stack = stack;
 198
 199     sk_EVP_MD_push(digest_stack, md);
 200     EVP_MD_up_ref(md);
 201 }
 202
 203 static void list_digests(void)
 204 {
 205     STACK_OF(EVP_MD) *digests = sk_EVP_MD_new(md_cmp);
 206     int i;
 207
 208     BIO_printf(bio_out, "Legacy:\n");
 209     EVP_MD_do_all_sorted(list_md_fn, bio_out);
 210
 211     BIO_printf(bio_out, "Provided:\n");
 212     EVP_MD_do_all_ex(NULL, collect_digests, digests);
 213     sk_EVP_MD_sort(digests);
 214     for (i = 0; i < sk_EVP_MD_num(digests); i++) {
 215         const EVP_MD *m = sk_EVP_MD_value(digests, i);
 216
 217         BIO_printf(bio_out, "  %s", EVP_MD_name(m));
 218         BIO_printf(bio_out, " @ %s\n",
 219                    OSSL_PROVIDER_name(EVP_MD_provider(m)));
 220         if (verbose) {
 221             print_param_types("retrievable algorithm parameters",
 222                               EVP_MD_gettable_params(m));
 223             print_param_types("retrievable operation parameters",
 224                               EVP_MD_CTX_gettable_params(m));
 225             print_param_types("settable operation parameters",
 226                               EVP_MD_CTX_settable_params(m));
 227         }
 228     }
 229     sk_EVP_MD_pop_free(digests, EVP_MD_meth_free);
 230 }
 231
 232 #if 0                            /* Temporarly disabled */
 233 static void list_mac_fn(const EVP_MAC *m,
 234                         const char *from, const char *to, void *arg)
 235 {
 236     if (m != NULL) {
 237         BIO_printf(arg, "%s\n", EVP_MAC_name(m));
 238     } else {
 239         if (from == NULL)
 240             from = "<undefined>";
 241         if (to == NULL)
 242             to = "<undefined>";
 243         BIO_printf(arg, "%s => %s\n", from, to);
 244     }
 245 }
 246 #endif
 247
 248 static void list_missing_help(void)
 249 {
 250     const FUNCTION *fp;
 251     const OPTIONS *o;
 252
 253     for (fp = functions; fp->name != NULL; fp++) {
 254         if ((o = fp->help) != NULL) {
 255             /* If there is help, list what flags are not documented. */
 256             for ( ; o->name != NULL; o++) {
 257                 if (o->helpstr == NULL)
 258                     BIO_printf(bio_out, "%s %s\n", fp->name, o->name);
 259             }
 260         } else if (fp->func != dgst_main) {
 261             /* If not aliased to the dgst command, */
 262             BIO_printf(bio_out, "%s *\n", fp->name);
 263         }
 264     }
 265 }
 266
 267 static void list_objects(void)
 268 {
 269     int max_nid = OBJ_new_nid(0);
 270     int i;
 271     char *oid_buf = NULL;
 272     int oid_size = 0;
 273
 274     /* Skip 0, since that's NID_undef */
 275     for (i = 1; i < max_nid; i++) {
 276         const ASN1_OBJECT *obj = OBJ_nid2obj(i);
 277         const char *sn = OBJ_nid2sn(i);
 278         const char *ln = OBJ_nid2ln(i);
 279         int n = 0;
 280
 281         /*
 282          * If one of the retrieved objects somehow generated an error,
 283          * we ignore it.  The check for NID_undef below will detect the
 284          * error and simply skip to the next NID.
 285          */
 286         ERR_clear_error();
 287
 288         if (OBJ_obj2nid(obj) == NID_undef)
 289             continue;
 290
 291         if ((n = OBJ_obj2txt(NULL, 0, obj, 1)) == 0) {
 292             BIO_printf(bio_out, "# None-OID object: %s, %s\n", sn, ln);
 293             continue;
 294         }
 295         if (n < 0)
 296             break;               /* Error */
 297
 298         if (n > oid_size) {
 299             oid_buf = OPENSSL_realloc(oid_buf, n + 1);
 300             if (oid_buf == NULL) {
 301                 BIO_printf(bio_err, "ERROR: Memory allocation\n");
 302                 break;           /* Error */
 303             }
 304             oid_size = n + 1;
 305         }
 306         if (OBJ_obj2txt(oid_buf, oid_size, obj, 1) < 0)
 307             break;               /* Error */
 308         if (ln == NULL || strcmp(sn, ln) == 0)
 309             BIO_printf(bio_out, "%s = %s\n", sn, oid_buf);
 310         else
 311             BIO_printf(bio_out, "%s = %s, %s\n", sn, ln, oid_buf);
 312     }
 313
 314     OPENSSL_free(oid_buf);
 315 }
 316
 317 static void list_options_for_command(const char *command)
 318 {
 319     const FUNCTION *fp;
 320     const OPTIONS *o;
 321
 322     for (fp = functions; fp->name != NULL; fp++)
 323         if (strcmp(fp->name, command) == 0)
 324             break;
 325     if (fp->name == NULL) {
 326         BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
 327                 command);
 328         return;
 329     }
 330
 331     if ((o = fp->help) == NULL)
 332         return;
 333
 334     for ( ; o->name != NULL; o++) {
 335         if (o->name == OPT_HELP_STR
 336                 || o->name == OPT_MORE_STR
 337                 || o->name[0] == '\0')
 338             continue;
 339         BIO_printf(bio_out, "%s %c\n", o->name, o->valtype);
 340     }
 341 }
 342
 343 static void list_type(FUNC_TYPE ft, int one)
 344 {
 345     FUNCTION *fp;
 346     int i = 0;
 347     DISPLAY_COLUMNS dc;
 348
 349     memset(&dc, 0, sizeof(dc));
 350     if (!one)
 351         calculate_columns(functions, &dc);
 352
 353     for (fp = functions; fp->name != NULL; fp++) {
 354         if (fp->type != ft)
 355             continue;
 356         if (one) {
 357             BIO_printf(bio_out, "%s\n", fp->name);
 358         } else {
 359             if (i % dc.columns == 0 && i > 0)
 360                 BIO_printf(bio_out, "\n");
 361             BIO_printf(bio_out, "%-*s", dc.width, fp->name);
 362             i++;
 363         }
 364     }
 365     if (!one)
 366         BIO_printf(bio_out, "\n\n");
 367 }
 368
 369 static void list_pkey(void)
 370 {
 371     int i;
 372
 373     for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
 374         const EVP_PKEY_ASN1_METHOD *ameth;
 375         int pkey_id, pkey_base_id, pkey_flags;
 376         const char *pinfo, *pem_str;
 377         ameth = EVP_PKEY_asn1_get0(i);
 378         EVP_PKEY_asn1_get0_info(&pkey_id, &pkey_base_id, &pkey_flags,
 379                                 &pinfo, &pem_str, ameth);
 380         if (pkey_flags & ASN1_PKEY_ALIAS) {
 381             BIO_printf(bio_out, "Name: %s\n", OBJ_nid2ln(pkey_id));
 382             BIO_printf(bio_out, "\tAlias for: %s\n",
 383                        OBJ_nid2ln(pkey_base_id));
 384         } else {
 385             BIO_printf(bio_out, "Name: %s\n", pinfo);
 386             BIO_printf(bio_out, "\tType: %s Algorithm\n",
 387                        pkey_flags & ASN1_PKEY_DYNAMIC ?
 388                        "External" : "Builtin");
 389             BIO_printf(bio_out, "\tOID: %s\n", OBJ_nid2ln(pkey_id));
 390             if (pem_str == NULL)
 391                 pem_str = "(none)";
 392             BIO_printf(bio_out, "\tPEM string: %s\n", pem_str);
 393         }
 394
 395     }
 396 }
 397
 398 static void list_pkey_meth(void)
 399 {
 400     size_t i;
 401     size_t meth_count = EVP_PKEY_meth_get_count();
 402
 403     for (i = 0; i < meth_count; i++) {
 404         const EVP_PKEY_METHOD *pmeth = EVP_PKEY_meth_get0(i);
 405         int pkey_id, pkey_flags;
 406
 407         EVP_PKEY_meth_get0_info(&pkey_id, &pkey_flags, pmeth);
 408         BIO_printf(bio_out, "%s\n", OBJ_nid2ln(pkey_id));
 409         BIO_printf(bio_out, "\tType: %s Algorithm\n",
 410                    pkey_flags & ASN1_PKEY_DYNAMIC ?  "External" : "Builtin");
 411     }
 412 }
 413
 414 static void list_engines(void)
 415 {
 416 #ifndef OPENSSL_NO_ENGINE
 417     ENGINE *e;
 418
 419     BIO_puts(bio_out, "Engines:\n");
 420     e = ENGINE_get_first();
 421     while (e) {
 422         BIO_printf(bio_out, "%s\n", ENGINE_get_id(e));
 423         e = ENGINE_get_next(e);
 424     }
 425 #else
 426     BIO_puts(bio_out, "Engine support is disabled.\n");
 427 #endif
 428 }
 429
 430 static void list_disabled(void)
 431 {
 432     BIO_puts(bio_out, "Disabled algorithms:\n");
 433 #ifdef OPENSSL_NO_ARIA
 434     BIO_puts(bio_out, "ARIA\n");
 435 #endif
 436 #ifdef OPENSSL_NO_BF
 437     BIO_puts(bio_out, "BF\n");
 438 #endif
 439 #ifdef OPENSSL_NO_BLAKE2
 440     BIO_puts(bio_out, "BLAKE2\n");
 441 #endif
 442 #ifdef OPENSSL_NO_CAMELLIA
 443     BIO_puts(bio_out, "CAMELLIA\n");
 444 #endif
 445 #ifdef OPENSSL_NO_CAST
 446     BIO_puts(bio_out, "CAST\n");
 447 #endif
 448 #ifdef OPENSSL_NO_CMAC
 449     BIO_puts(bio_out, "CMAC\n");
 450 #endif
 451 #ifdef OPENSSL_NO_CMS
 452     BIO_puts(bio_out, "CMS\n");
 453 #endif
 454 #ifdef OPENSSL_NO_COMP
 455     BIO_puts(bio_out, "COMP\n");
 456 #endif
 457 #ifdef OPENSSL_NO_DES
 458     BIO_puts(bio_out, "DES\n");
 459 #endif
 460 #ifdef OPENSSL_NO_DGRAM
 461     BIO_puts(bio_out, "DGRAM\n");
 462 #endif
 463 #ifdef OPENSSL_NO_DH
 464     BIO_puts(bio_out, "DH\n");
 465 #endif
 466 #ifdef OPENSSL_NO_DSA
 467     BIO_puts(bio_out, "DSA\n");
 468 #endif
 469 #if defined(OPENSSL_NO_DTLS)
 470     BIO_puts(bio_out, "DTLS\n");
 471 #endif
 472 #if defined(OPENSSL_NO_DTLS1)
 473     BIO_puts(bio_out, "DTLS1\n");
 474 #endif
 475 #if defined(OPENSSL_NO_DTLS1_2)
 476     BIO_puts(bio_out, "DTLS1_2\n");
 477 #endif
 478 #ifdef OPENSSL_NO_EC
 479     BIO_puts(bio_out, "EC\n");
 480 #endif
 481 #ifdef OPENSSL_NO_EC2M
 482     BIO_puts(bio_out, "EC2M\n");
 483 #endif
 484 #ifdef OPENSSL_NO_ENGINE
 485     BIO_puts(bio_out, "ENGINE\n");
 486 #endif
 487 #ifdef OPENSSL_NO_GOST
 488     BIO_puts(bio_out, "GOST\n");
 489 #endif
 490 #ifdef OPENSSL_NO_IDEA
 491     BIO_puts(bio_out, "IDEA\n");
 492 #endif
 493 #ifdef OPENSSL_NO_MD2
 494     BIO_puts(bio_out, "MD2\n");
 495 #endif
 496 #ifdef OPENSSL_NO_MD4
 497     BIO_puts(bio_out, "MD4\n");
 498 #endif
 499 #ifdef OPENSSL_NO_MD5
 500     BIO_puts(bio_out, "MD5\n");
 501 #endif
 502 #ifdef OPENSSL_NO_MDC2
 503     BIO_puts(bio_out, "MDC2\n");
 504 #endif
 505 #ifdef OPENSSL_NO_OCB
 506     BIO_puts(bio_out, "OCB\n");
 507 #endif
 508 #ifdef OPENSSL_NO_OCSP
 509     BIO_puts(bio_out, "OCSP\n");
 510 #endif
 511 #ifdef OPENSSL_NO_PSK
 512     BIO_puts(bio_out, "PSK\n");
 513 #endif
 514 #ifdef OPENSSL_NO_RC2
 515     BIO_puts(bio_out, "RC2\n");
 516 #endif
 517 #ifdef OPENSSL_NO_RC4
 518     BIO_puts(bio_out, "RC4\n");
 519 #endif
 520 #ifdef OPENSSL_NO_RC5
 521     BIO_puts(bio_out, "RC5\n");
 522 #endif
 523 #ifdef OPENSSL_NO_RMD160
 524     BIO_puts(bio_out, "RMD160\n");
 525 #endif
 526 #ifdef OPENSSL_NO_RSA
 527     BIO_puts(bio_out, "RSA\n");
 528 #endif
 529 #ifdef OPENSSL_NO_SCRYPT
 530     BIO_puts(bio_out, "SCRYPT\n");
 531 #endif
 532 #ifdef OPENSSL_NO_SCTP
 533     BIO_puts(bio_out, "SCTP\n");
 534 #endif
 535 #ifdef OPENSSL_NO_SEED
 536     BIO_puts(bio_out, "SEED\n");
 537 #endif
 538 #ifdef OPENSSL_NO_SM2
 539     BIO_puts(bio_out, "SM2\n");
 540 #endif
 541 #ifdef OPENSSL_NO_SM3
 542     BIO_puts(bio_out, "SM3\n");
 543 #endif
 544 #ifdef OPENSSL_NO_SM4
 545     BIO_puts(bio_out, "SM4\n");
 546 #endif
 547 #ifdef OPENSSL_NO_SOCK
 548     BIO_puts(bio_out, "SOCK\n");
 549 #endif
 550 #ifdef OPENSSL_NO_SRP
 551     BIO_puts(bio_out, "SRP\n");
 552 #endif
 553 #ifdef OPENSSL_NO_SRTP
 554     BIO_puts(bio_out, "SRTP\n");
 555 #endif
 556 #ifdef OPENSSL_NO_SSL3
 557     BIO_puts(bio_out, "SSL3\n");
 558 #endif
 559 #ifdef OPENSSL_NO_TLS1
 560     BIO_puts(bio_out, "TLS1\n");
 561 #endif
 562 #ifdef OPENSSL_NO_TLS1_1
 563     BIO_puts(bio_out, "TLS1_1\n");
 564 #endif
 565 #ifdef OPENSSL_NO_TLS1_2
 566     BIO_puts(bio_out, "TLS1_2\n");
 567 #endif
 568 #ifdef OPENSSL_NO_WHIRLPOOL
 569     BIO_puts(bio_out, "WHIRLPOOL\n");
 570 #endif
 571 #ifndef ZLIB
 572     BIO_puts(bio_out, "ZLIB\n");
 573 #endif
 574 }
 575
 576 /* Unified enum for help and list commands. */
 577 typedef enum HELPLIST_CHOICE {
 578     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ONE, OPT_VERBOSE,
 579     OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_MAC_ALGORITHMS, OPT_OPTIONS,
 580     OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
 581     OPT_PK_ALGORITHMS, OPT_PK_METHOD, OPT_ENGINES, OPT_DISABLED,
 582     OPT_MISSING_HELP, OPT_OBJECTS
 583 } HELPLIST_CHOICE;
 584
 585 const OPTIONS list_options[] = {
 586     {"help", OPT_HELP, '-', "Display this summary"},
 587     {"1", OPT_ONE, '-', "List in one column"},
 588     {"verbose", OPT_VERBOSE, '-', "Verbose listing"},
 589     {"commands", OPT_COMMANDS, '-', "List of standard commands"},
 590     {"digest-commands", OPT_DIGEST_COMMANDS, '-',
 591      "List of message digest commands"},
 592     {"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
 593      "List of message digest algorithms"},
 594     {"mac-algorithms", OPT_MAC_ALGORITHMS, '-',
 595      "List of message authentication code algorithms"},
 596     {"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
 597     {"cipher-algorithms", OPT_CIPHER_ALGORITHMS, '-',
 598      "List of cipher algorithms"},
 599     {"public-key-algorithms", OPT_PK_ALGORITHMS, '-',
 600      "List of public key algorithms"},
 601     {"public-key-methods", OPT_PK_METHOD, '-',
 602      "List of public key methods"},
 603     {"engines", OPT_ENGINES, '-',
 604      "List of loaded engines"},
 605     {"disabled", OPT_DISABLED, '-',
 606      "List of disabled features"},
 607     {"missing-help", OPT_MISSING_HELP, '-',
 608      "List missing detailed help strings"},
 609     {"options", OPT_OPTIONS, 's',
 610      "List options for specified command"},
 611     {"objects", OPT_OBJECTS, '-',
 612      "List built in objects (OID<->name mappings)"},
 613     {NULL}
 614 };
 615
 616 int list_main(int argc, char **argv)
 617 {
 618     char *prog;
 619     HELPLIST_CHOICE o;
 620     int one = 0, done = 0;
 621     struct {
 622         unsigned int commands:1;
 623         unsigned int digest_commands:1;
 624         unsigned int digest_algorithms:1;
 625         unsigned int mac_algorithms:1;
 626         unsigned int cipher_commands:1;
 627         unsigned int cipher_algorithms:1;
 628         unsigned int pk_algorithms:1;
 629         unsigned int pk_method:1;
 630         unsigned int engines:1;
 631         unsigned int disabled:1;
 632         unsigned int missing_help:1;
 633         unsigned int objects:1;
 634         unsigned int options:1;
 635     } todo = { 0, };
 636
 637     verbose = 0;                 /* Clear a possible previous call */
 638
 639     prog = opt_init(argc, argv, list_options);
 640     while ((o = opt_next()) != OPT_EOF) {
 641         switch (o) {
 642         case OPT_EOF:  /* Never hit, but suppresses warning */
 643         case OPT_ERR:
 644 opthelp:
 645             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 646             return 1;
 647         case OPT_HELP:
 648             opt_help(list_options);
 649             break;
 650         case OPT_ONE:
 651             one = 1;
 652             break;
 653         case OPT_COMMANDS:
 654             todo.commands = 1;
 655             break;
 656         case OPT_DIGEST_COMMANDS:
 657             todo.digest_commands = 1;
 658             break;
 659         case OPT_DIGEST_ALGORITHMS:
 660             todo.digest_algorithms = 1;
 661             break;
 662         case OPT_MAC_ALGORITHMS:
 663             todo.mac_algorithms = 1;
 664             break;
 665         case OPT_CIPHER_COMMANDS:
 666             todo.cipher_commands = 1;
 667             break;
 668         case OPT_CIPHER_ALGORITHMS:
 669             todo.cipher_algorithms = 1;
 670             break;
 671         case OPT_PK_ALGORITHMS:
 672             todo.pk_algorithms = 1;
 673             break;
 674         case OPT_PK_METHOD:
 675             todo.pk_method = 1;
 676             break;
 677         case OPT_ENGINES:
 678             todo.engines = 1;
 679             break;
 680         case OPT_DISABLED:
 681             todo.disabled = 1;
 682             break;
 683         case OPT_MISSING_HELP:
 684             todo.missing_help = 1;
 685             break;
 686         case OPT_OBJECTS:
 687             todo.objects = 1;
 688             break;
 689         case OPT_OPTIONS:
 690             list_options_for_command(opt_arg());
 691             break;
 692         case OPT_VERBOSE:
 693             verbose = 1;
 694             break;
 695         }
 696         done = 1;
 697     }
 698     if (opt_num_rest() != 0) {
 699         BIO_printf(bio_err, "Extra arguments given.\n");
 700         goto opthelp;
 701     }
 702
 703     if (todo.commands)
 704         list_type(FT_general, one);
 705     if (todo.digest_commands)
 706         list_type(FT_md, one);
 707     if (todo.digest_algorithms)
 708         list_digests();
 709 #if 0                            /* Temporarly disabled */
 710     if (todo.mac_algorithms)
 711         EVP_MAC_do_all_sorted(list_mac_fn, bio_out);
 712 #endif
 713     if (todo.cipher_commands)
 714         list_type(FT_cipher, one);
 715     if (todo.cipher_algorithms)
 716         list_ciphers();
 717     if (todo.pk_algorithms)
 718         list_pkey();
 719     if (todo.pk_method)
 720         list_pkey_meth();
 721     if (todo.engines)
 722         list_engines();
 723     if (todo.disabled)
 724         list_disabled();
 725     if (todo.missing_help)
 726         list_missing_help();
 727     if (todo.objects)
 728         list_objects();
 729
 730     if (!done)
 731         goto opthelp;
 732
 733     return 0;
 734 }