apps/openssl.c

   1 /*
   2  * Copyright 1995-2018 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 <internal/cryptlib.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <openssl/bio.h>
  15 #include <openssl/crypto.h>
  16 #include <openssl/trace.h>
  17 #include <openssl/lhash.h>
  18 #include <openssl/conf.h>
  19 #include <openssl/x509.h>
  20 #include <openssl/pem.h>
  21 #include <openssl/ssl.h>
  22 #ifndef OPENSSL_NO_ENGINE
  23 # include <openssl/engine.h>
  24 #endif
  25 #include <openssl/err.h>
  26 #include "s_apps.h"
  27 /* Needed to get the other O_xxx flags. */
  28 #ifdef OPENSSL_SYS_VMS
  29 # include <unixio.h>
  30 #endif
  31 #include "apps.h"
  32 #define INCLUDE_FUNCTION_TABLE
  33 #include "progs.h"
  34
  35 /* Structure to hold the number of columns to be displayed and the
  36  * field width used to display them.
  37  */
  38 typedef struct {
  39     int columns;
  40     int width;
  41 } DISPLAY_COLUMNS;
  42
  43 /* Special sentinel to exit the program. */
  44 #define EXIT_THE_PROGRAM (-1)
  45
  46 /*
  47  * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with
  48  * the base prototypes (we cast each variable inside the function to the
  49  * required type of "FUNCTION*"). This removes the necessity for
  50  * macro-generated wrapper functions.
  51  */
  52 static LHASH_OF(FUNCTION) *prog_init(void);
  53 static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[]);
  54 static void list_pkey(void);
  55 static void list_pkey_meth(void);
  56 static void list_type(FUNC_TYPE ft, int one);
  57 static void list_engines(void);
  58 static void list_disabled(void);
  59 char *default_config_file = NULL;
  60
  61 BIO *bio_in = NULL;
  62 BIO *bio_out = NULL;
  63 BIO *bio_err = NULL;
  64
  65 static void calculate_columns(DISPLAY_COLUMNS *dc)
  66 {
  67     FUNCTION *f;
  68     int len, maxlen = 0;
  69
  70     for (f = functions; f->name != NULL; ++f)
  71         if (f->type == FT_general || f->type == FT_md || f->type == FT_cipher)
  72             if ((len = strlen(f->name)) > maxlen)
  73                 maxlen = len;
  74
  75     dc->width = maxlen + 2;
  76     dc->columns = (80 - 1) / dc->width;
  77 }
  78
  79 static int apps_startup(void)
  80 {
  81 #ifdef SIGPIPE
  82     signal(SIGPIPE, SIG_IGN);
  83 #endif
  84
  85     /* Set non-default library initialisation settings */
  86     if (!OPENSSL_init_ssl(OPENSSL_INIT_ENGINE_ALL_BUILTIN
  87                           | OPENSSL_INIT_LOAD_CONFIG, NULL))
  88         return 0;
  89
  90     setup_ui_method();
  91
  92     return 1;
  93 }
  94
  95 static void apps_shutdown(void)
  96 {
  97     destroy_ui_method();
  98 }
  99
 100 static char *make_config_name(void)
 101 {
 102     const char *t;
 103     size_t len;
 104     char *p;
 105
 106     if ((t = getenv("OPENSSL_CONF")) != NULL)
 107         return OPENSSL_strdup(t);
 108
 109     t = X509_get_default_cert_area();
 110     len = strlen(t) + 1 + strlen(OPENSSL_CONF) + 1;
 111     p = app_malloc(len, "config filename buffer");
 112     strcpy(p, t);
 113 #ifndef OPENSSL_SYS_VMS
 114     strcat(p, "/");
 115 #endif
 116     strcat(p, OPENSSL_CONF);
 117
 118     return p;
 119 }
 120
 121 typedef struct tracedata_st {
 122     BIO *bio;
 123     unsigned int ingroup:1;
 124 } tracedata;
 125
 126 static size_t internal_trace_cb(const char *buf, size_t cnt,
 127                                 int category, int cmd, void *vdata)
 128 {
 129     int ret = 0;
 130     tracedata *trace_data = vdata;
 131     union {
 132         CRYPTO_THREAD_ID tid;
 133         unsigned long ltid;
 134     } tid;
 135     char buffer[256];
 136
 137     switch (cmd) {
 138     case OSSL_TRACE_CTRL_BEGIN:
 139         trace_data->ingroup = 1;
 140
 141         tid.ltid = 0;
 142         tid.tid = CRYPTO_THREAD_get_current_id();
 143
 144         BIO_snprintf(buffer, sizeof(buffer), "TRACE[%lx]:%s: ", tid.ltid,
 145                      OSSL_trace_get_category_name(category));
 146         BIO_ctrl(trace_data->bio, PREFIX_CTRL_SET_PREFIX,
 147                  strlen(buffer), buffer);
 148         break;
 149     case OSSL_TRACE_CTRL_WRITE:
 150         ret = BIO_write(trace_data->bio, buf, cnt);
 151         break;
 152     case OSSL_TRACE_CTRL_END:
 153         trace_data->ingroup = 0;
 154
 155         BIO_ctrl(trace_data->bio, PREFIX_CTRL_SET_PREFIX, 0, NULL);
 156
 157         break;
 158     }
 159
 160     return ret < 0 ? 0 : ret;
 161 }
 162
 163 DEFINE_STACK_OF(tracedata)
 164 static STACK_OF(tracedata) *trace_data_stack;
 165
 166 static void tracedata_free(tracedata *data)
 167 {
 168     BIO_free_all(data->bio);
 169     OPENSSL_free(data);
 170 }
 171
 172 static STACK_OF(tracedata) *trace_data_stack;
 173
 174 static void cleanup_trace(void)
 175 {
 176     sk_tracedata_pop_free(trace_data_stack, tracedata_free);
 177 }
 178
 179 static void setup_trace(const char *str)
 180 {
 181     char *val;
 182
 183     trace_data_stack = sk_tracedata_new_null();
 184     val = OPENSSL_strdup(str);
 185
 186     if (val != NULL) {
 187         char *valp = val;
 188         char *item;
 189
 190         for (valp = val; (item = strtok(valp, ",")) != NULL; valp = NULL) {
 191             int category = OSSL_trace_get_category_num(item);
 192
 193             if (category >= 0) {
 194                 BIO *channel = BIO_push(BIO_new(apps_bf_prefix()),
 195                                         dup_bio_err(FORMAT_TEXT));
 196                 tracedata *trace_data = OPENSSL_zalloc(sizeof(*trace_data));
 197
 198                 if (trace_data == NULL
 199                     || (trace_data->bio = channel) == NULL
 200                     || OSSL_trace_set_callback(category, internal_trace_cb,
 201                                                trace_data) == 0
 202                     || sk_tracedata_push(trace_data_stack, trace_data) == 0) {
 203                     OSSL_trace_set_callback(category, NULL, NULL);
 204                     BIO_free_all(channel);
 205                     fprintf(stderr,
 206                             "warning: unable to setup trace callback for category '%s'.\n",
 207                             item);
 208                 }
 209             } else {
 210                 fprintf(stderr,
 211                         "warning: unknown trace category: '%s'.\n",
 212                         item);
 213             }
 214         }
 215     }
 216
 217     OPENSSL_free(val);
 218     atexit(cleanup_trace);
 219 }
 220
 221 int main(int argc, char *argv[])
 222 {
 223     FUNCTION f, *fp;
 224     LHASH_OF(FUNCTION) *prog = NULL;
 225     char *p, *pname;
 226     char buf[1024];
 227     const char *prompt;
 228     ARGS arg;
 229     int first, n, i, ret = 0;
 230
 231     arg.argv = NULL;
 232     arg.size = 0;
 233
 234     /* Set up some of the environment. */
 235     default_config_file = make_config_name();
 236     bio_in = dup_bio_in(FORMAT_TEXT);
 237     bio_out = dup_bio_out(FORMAT_TEXT);
 238     bio_err = dup_bio_err(FORMAT_TEXT);
 239
 240 #if defined(OPENSSL_SYS_VMS) && defined(__DECC)
 241     argv = copy_argv(&argc, argv);
 242 #elif defined(_WIN32)
 243     /*
 244      * Replace argv[] with UTF-8 encoded strings.
 245      */
 246     win32_utf8argv(&argc, &argv);
 247 #endif
 248
 249     /*
 250      * We use the prefix method to get the trace output we want.  Since some
 251      * trace outputs happen with OPENSSL_cleanup(), which is run automatically
 252      * after exit(), we need to destroy the prefix method as late as possible.
 253      */
 254     atexit(destroy_prefix_method);
 255
 256     setup_trace(getenv("OPENSSL_TRACE"));
 257
 258     p = getenv("OPENSSL_DEBUG_MEMORY");
 259     if (p != NULL && strcmp(p, "on") == 0)
 260         CRYPTO_set_mem_debug(1);
 261     CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
 262
 263     if (getenv("OPENSSL_FIPS")) {
 264         BIO_printf(bio_err, "FIPS mode not supported.\n");
 265         return 1;
 266     }
 267
 268     if (!apps_startup()) {
 269         BIO_printf(bio_err,
 270                    "FATAL: Startup failure (dev note: apps_startup() failed)\n");
 271         ERR_print_errors(bio_err);
 272         ret = 1;
 273         goto end;
 274     }
 275
 276     prog = prog_init();
 277     pname = opt_progname(argv[0]);
 278
 279     /* first check the program name */
 280     f.name = pname;
 281     fp = lh_FUNCTION_retrieve(prog, &f);
 282     if (fp != NULL) {
 283         argv[0] = pname;
 284         ret = fp->func(argc, argv);
 285         goto end;
 286     }
 287
 288     /* If there is stuff on the command line, run with that. */
 289     if (argc != 1) {
 290         argc--;
 291         argv++;
 292         ret = do_cmd(prog, argc, argv);
 293         if (ret < 0)
 294             ret = 0;
 295         goto end;
 296     }
 297
 298     /* ok, lets enter interactive mode */
 299     for (;;) {
 300         ret = 0;
 301         /* Read a line, continue reading if line ends with \ */
 302         for (p = buf, n = sizeof(buf), i = 0, first = 1; n > 0; first = 0) {
 303             prompt = first ? "OpenSSL> " : "> ";
 304             p[0] = '\0';
 305 #ifndef READLINE
 306             fputs(prompt, stdout);
 307             fflush(stdout);
 308             if (!fgets(p, n, stdin))
 309                 goto end;
 310             if (p[0] == '\0')
 311                 goto end;
 312             i = strlen(p);
 313             if (i <= 1)
 314                 break;
 315             if (p[i - 2] != '\\')
 316                 break;
 317             i -= 2;
 318             p += i;
 319             n -= i;
 320 #else
 321             {
 322                 extern char *readline(const char *);
 323                 extern void add_history(const char *cp);
 324                 char *text;
 325
 326                 text = readline(prompt);
 327                 if (text == NULL)
 328                     goto end;
 329                 i = strlen(text);
 330                 if (i == 0 || i > n)
 331                     break;
 332                 if (text[i - 1] != '\\') {
 333                     p += strlen(strcpy(p, text));
 334                     free(text);
 335                     add_history(buf);
 336                     break;
 337                 }
 338
 339                 text[i - 1] = '\0';
 340                 p += strlen(strcpy(p, text));
 341                 free(text);
 342                 n -= i;
 343             }
 344 #endif
 345         }
 346
 347         if (!chopup_args(&arg, buf)) {
 348             BIO_printf(bio_err, "Can't parse (no memory?)\n");
 349             break;
 350         }
 351
 352         ret = do_cmd(prog, arg.argc, arg.argv);
 353         if (ret == EXIT_THE_PROGRAM) {
 354             ret = 0;
 355             goto end;
 356         }
 357         if (ret != 0)
 358             BIO_printf(bio_err, "error in %s\n", arg.argv[0]);
 359         (void)BIO_flush(bio_out);
 360         (void)BIO_flush(bio_err);
 361     }
 362     ret = 1;
 363  end:
 364     OPENSSL_free(default_config_file);
 365     lh_FUNCTION_free(prog);
 366     OPENSSL_free(arg.argv);
 367     app_RAND_write();
 368
 369     BIO_free(bio_in);
 370     BIO_free_all(bio_out);
 371     apps_shutdown();
 372 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
 373     if (CRYPTO_mem_leaks(bio_err) <= 0)
 374         ret = 1;
 375 #endif
 376     BIO_free(bio_err);
 377     EXIT(ret);
 378 }
 379
 380 static void list_cipher_fn(const EVP_CIPHER *c,
 381                            const char *from, const char *to, void *arg)
 382 {
 383     if (c != NULL) {
 384         BIO_printf(arg, "%s\n", EVP_CIPHER_name(c));
 385     } else {
 386         if (from == NULL)
 387             from = "<undefined>";
 388         if (to == NULL)
 389             to = "<undefined>";
 390         BIO_printf(arg, "%s => %s\n", from, to);
 391     }
 392 }
 393
 394 static void list_md_fn(const EVP_MD *m,
 395                        const char *from, const char *to, void *arg)
 396 {
 397     if (m != NULL) {
 398         BIO_printf(arg, "%s\n", EVP_MD_name(m));
 399     } else {
 400         if (from == NULL)
 401             from = "<undefined>";
 402         if (to == NULL)
 403             to = "<undefined>";
 404         BIO_printf((BIO *)arg, "%s => %s\n", from, to);
 405     }
 406 }
 407
 408 static void list_mac_fn(const EVP_MAC *m,
 409                         const char *from, const char *to, void *arg)
 410 {
 411     if (m != NULL) {
 412         BIO_printf(arg, "%s\n", EVP_MAC_name(m));
 413     } else {
 414         if (from == NULL)
 415             from = "<undefined>";
 416         if (to == NULL)
 417             to = "<undefined>";
 418         BIO_printf(arg, "%s => %s\n", from, to);
 419     }
 420 }
 421
 422 static void list_missing_help(void)
 423 {
 424     const FUNCTION *fp;
 425     const OPTIONS *o;
 426
 427     for (fp = functions; fp->name != NULL; fp++) {
 428         if ((o = fp->help) != NULL) {
 429             /* If there is help, list what flags are not documented. */
 430             for ( ; o->name != NULL; o++) {
 431                 if (o->helpstr == NULL)
 432                     BIO_printf(bio_out, "%s %s\n", fp->name, o->name);
 433             }
 434         } else if (fp->func != dgst_main) {
 435             /* If not aliased to the dgst command, */
 436             BIO_printf(bio_out, "%s *\n", fp->name);
 437         }
 438     }
 439 }
 440
 441 static void list_objects(void)
 442 {
 443     int max_nid = OBJ_new_nid(0);
 444     int i;
 445     char *oid_buf = NULL;
 446     int oid_size = 0;
 447
 448     /* Skip 0, since that's NID_undef */
 449     for (i = 1; i < max_nid; i++) {
 450         const ASN1_OBJECT *obj = OBJ_nid2obj(i);
 451         const char *sn = OBJ_nid2sn(i);
 452         const char *ln = OBJ_nid2ln(i);
 453         int n = 0;
 454
 455         /*
 456          * If one of the retrieved objects somehow generated an error,
 457          * we ignore it.  The check for NID_undef below will detect the
 458          * error and simply skip to the next NID.
 459          */
 460         ERR_clear_error();
 461
 462         if (OBJ_obj2nid(obj) == NID_undef)
 463             continue;
 464
 465         if ((n = OBJ_obj2txt(NULL, 0, obj, 1)) == 0) {
 466             BIO_printf(bio_out, "# None-OID object: %s, %s\n", sn, ln);
 467             continue;
 468         }
 469         if (n < 0)
 470             break;               /* Error */
 471
 472         if (n > oid_size) {
 473             oid_buf = OPENSSL_realloc(oid_buf, n + 1);
 474             if (oid_buf == NULL) {
 475                 BIO_printf(bio_err, "ERROR: Memory allocation\n");
 476                 break;           /* Error */
 477             }
 478             oid_size = n + 1;
 479         }
 480         if (OBJ_obj2txt(oid_buf, oid_size, obj, 1) < 0)
 481             break;               /* Error */
 482         if (ln == NULL || strcmp(sn, ln) == 0)
 483             BIO_printf(bio_out, "%s = %s\n", sn, oid_buf);
 484         else
 485             BIO_printf(bio_out, "%s = %s, %s\n", sn, ln, oid_buf);
 486     }
 487
 488     OPENSSL_free(oid_buf);
 489 }
 490
 491 static void list_options_for_command(const char *command)
 492 {
 493     const FUNCTION *fp;
 494     const OPTIONS *o;
 495
 496     for (fp = functions; fp->name != NULL; fp++)
 497         if (strcmp(fp->name, command) == 0)
 498             break;
 499     if (fp->name == NULL) {
 500         BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
 501                 command);
 502         return;
 503     }
 504
 505     if ((o = fp->help) == NULL)
 506         return;
 507
 508     for ( ; o->name != NULL; o++) {
 509         if (o->name == OPT_HELP_STR
 510                 || o->name == OPT_MORE_STR
 511                 || o->name[0] == '\0')
 512             continue;
 513         BIO_printf(bio_out, "%s %c\n", o->name, o->valtype);
 514     }
 515 }
 516
 517
 518 /* Unified enum for help and list commands. */
 519 typedef enum HELPLIST_CHOICE {
 520     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ONE,
 521     OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_MAC_ALGORITHMS, OPT_OPTIONS,
 522     OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
 523     OPT_PK_ALGORITHMS, OPT_PK_METHOD, OPT_ENGINES, OPT_DISABLED,
 524     OPT_MISSING_HELP, OPT_OBJECTS
 525 } HELPLIST_CHOICE;
 526
 527 const OPTIONS list_options[] = {
 528     {"help", OPT_HELP, '-', "Display this summary"},
 529     {"1", OPT_ONE, '-', "List in one column"},
 530     {"commands", OPT_COMMANDS, '-', "List of standard commands"},
 531     {"digest-commands", OPT_DIGEST_COMMANDS, '-',
 532      "List of message digest commands"},
 533     {"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
 534      "List of message digest algorithms"},
 535     {"mac-algorithms", OPT_MAC_ALGORITHMS, '-',
 536      "List of message authentication code algorithms"},
 537     {"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
 538     {"cipher-algorithms", OPT_CIPHER_ALGORITHMS, '-',
 539      "List of cipher algorithms"},
 540     {"public-key-algorithms", OPT_PK_ALGORITHMS, '-',
 541      "List of public key algorithms"},
 542     {"public-key-methods", OPT_PK_METHOD, '-',
 543      "List of public key methods"},
 544     {"engines", OPT_ENGINES, '-',
 545      "List of loaded engines"},
 546     {"disabled", OPT_DISABLED, '-',
 547      "List of disabled features"},
 548     {"missing-help", OPT_MISSING_HELP, '-',
 549      "List missing detailed help strings"},
 550     {"options", OPT_OPTIONS, 's',
 551      "List options for specified command"},
 552     {"objects", OPT_OBJECTS, '-',
 553      "List built in objects (OID<->name mappings)"},
 554     {NULL}
 555 };
 556
 557 int list_main(int argc, char **argv)
 558 {
 559     char *prog;
 560     HELPLIST_CHOICE o;
 561     int one = 0, done = 0;
 562
 563     prog = opt_init(argc, argv, list_options);
 564     while ((o = opt_next()) != OPT_EOF) {
 565         switch (o) {
 566         case OPT_EOF:  /* Never hit, but suppresses warning */
 567         case OPT_ERR:
 568 opthelp:
 569             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 570             return 1;
 571         case OPT_HELP:
 572             opt_help(list_options);
 573             break;
 574         case OPT_ONE:
 575             one = 1;
 576             break;
 577         case OPT_COMMANDS:
 578             list_type(FT_general, one);
 579             break;
 580         case OPT_DIGEST_COMMANDS:
 581             list_type(FT_md, one);
 582             break;
 583         case OPT_DIGEST_ALGORITHMS:
 584             EVP_MD_do_all_sorted(list_md_fn, bio_out);
 585             break;
 586         case OPT_MAC_ALGORITHMS:
 587             EVP_MAC_do_all_sorted(list_mac_fn, bio_out);
 588             break;
 589         case OPT_CIPHER_COMMANDS:
 590             list_type(FT_cipher, one);
 591             break;
 592         case OPT_CIPHER_ALGORITHMS:
 593             EVP_CIPHER_do_all_sorted(list_cipher_fn, bio_out);
 594             break;
 595         case OPT_PK_ALGORITHMS:
 596             list_pkey();
 597             break;
 598         case OPT_PK_METHOD:
 599             list_pkey_meth();
 600             break;
 601         case OPT_ENGINES:
 602             list_engines();
 603             break;
 604         case OPT_DISABLED:
 605             list_disabled();
 606             break;
 607         case OPT_MISSING_HELP:
 608             list_missing_help();
 609             break;
 610         case OPT_OBJECTS:
 611             list_objects();
 612             break;
 613         case OPT_OPTIONS:
 614             list_options_for_command(opt_arg());
 615             break;
 616         }
 617         done = 1;
 618     }
 619     if (opt_num_rest() != 0) {
 620         BIO_printf(bio_err, "Extra arguments given.\n");
 621         goto opthelp;
 622     }
 623
 624     if (!done)
 625         goto opthelp;
 626
 627     return 0;
 628 }
 629
 630 typedef enum HELP_CHOICE {
 631     OPT_hERR = -1, OPT_hEOF = 0, OPT_hHELP
 632 } HELP_CHOICE;
 633
 634 const OPTIONS help_options[] = {
 635     {OPT_HELP_STR, 1, '-', "Usage: help [options]\n"},
 636     {OPT_HELP_STR, 1, '-', "       help [command]\n"},
 637     {"help", OPT_hHELP, '-', "Display this summary"},
 638     {NULL}
 639 };
 640
 641
 642 int help_main(int argc, char **argv)
 643 {
 644     FUNCTION *fp;
 645     int i, nl;
 646     FUNC_TYPE tp;
 647     char *prog;
 648     HELP_CHOICE o;
 649     DISPLAY_COLUMNS dc;
 650
 651     prog = opt_init(argc, argv, help_options);
 652     while ((o = opt_next()) != OPT_hEOF) {
 653         switch (o) {
 654         case OPT_hERR:
 655         case OPT_hEOF:
 656             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 657             return 1;
 658         case OPT_hHELP:
 659             opt_help(help_options);
 660             return 0;
 661         }
 662     }
 663
 664     if (opt_num_rest() == 1) {
 665         char *new_argv[3];
 666
 667         new_argv[0] = opt_rest()[0];
 668         new_argv[1] = "--help";
 669         new_argv[2] = NULL;
 670         return do_cmd(prog_init(), 2, new_argv);
 671     }
 672     if (opt_num_rest() != 0) {
 673         BIO_printf(bio_err, "Usage: %s\n", prog);
 674         return 1;
 675     }
 676
 677     calculate_columns(&dc);
 678     BIO_printf(bio_err, "Standard commands");
 679     i = 0;
 680     tp = FT_none;
 681     for (fp = functions; fp->name != NULL; fp++) {
 682         nl = 0;
 683         if (i++ % dc.columns == 0) {
 684             BIO_printf(bio_err, "\n");
 685             nl = 1;
 686         }
 687         if (fp->type != tp) {
 688             tp = fp->type;
 689             if (!nl)
 690                 BIO_printf(bio_err, "\n");
 691             if (tp == FT_md) {
 692                 i = 1;
 693                 BIO_printf(bio_err,
 694                            "\nMessage Digest commands (see the `dgst' command for more details)\n");
 695             } else if (tp == FT_cipher) {
 696                 i = 1;
 697                 BIO_printf(bio_err,
 698                            "\nCipher commands (see the `enc' command for more details)\n");
 699             }
 700         }
 701         BIO_printf(bio_err, "%-*s", dc.width, fp->name);
 702     }
 703     BIO_printf(bio_err, "\n\n");
 704     return 0;
 705 }
 706
 707 static void list_type(FUNC_TYPE ft, int one)
 708 {
 709     FUNCTION *fp;
 710     int i = 0;
 711     DISPLAY_COLUMNS dc = {0};
 712
 713     if (!one)
 714         calculate_columns(&dc);
 715
 716     for (fp = functions; fp->name != NULL; fp++) {
 717         if (fp->type != ft)
 718             continue;
 719         if (one) {
 720             BIO_printf(bio_out, "%s\n", fp->name);
 721         } else {
 722             if (i % dc.columns == 0 && i > 0)
 723                 BIO_printf(bio_out, "\n");
 724             BIO_printf(bio_out, "%-*s", dc.width, fp->name);
 725             i++;
 726         }
 727     }
 728     if (!one)
 729         BIO_printf(bio_out, "\n\n");
 730 }
 731
 732 static int do_cmd(LHASH_OF(FUNCTION) *prog, int argc, char *argv[])
 733 {
 734     FUNCTION f, *fp;
 735
 736     if (argc <= 0 || argv[0] == NULL)
 737         return 0;
 738     f.name = argv[0];
 739     fp = lh_FUNCTION_retrieve(prog, &f);
 740     if (fp == NULL) {
 741         if (EVP_get_digestbyname(argv[0])) {
 742             f.type = FT_md;
 743             f.func = dgst_main;
 744             fp = &f;
 745         } else if (EVP_get_cipherbyname(argv[0])) {
 746             f.type = FT_cipher;
 747             f.func = enc_main;
 748             fp = &f;
 749         }
 750     }
 751     if (fp != NULL) {
 752         return fp->func(argc, argv);
 753     }
 754     if ((strncmp(argv[0], "no-", 3)) == 0) {
 755         /*
 756          * User is asking if foo is unsupported, by trying to "run" the
 757          * no-foo command.  Strange.
 758          */
 759         f.name = argv[0] + 3;
 760         if (lh_FUNCTION_retrieve(prog, &f) == NULL) {
 761             BIO_printf(bio_out, "%s\n", argv[0]);
 762             return 0;
 763         }
 764         BIO_printf(bio_out, "%s\n", argv[0] + 3);
 765         return 1;
 766     }
 767     if (strcmp(argv[0], "quit") == 0 || strcmp(argv[0], "q") == 0 ||
 768         strcmp(argv[0], "exit") == 0 || strcmp(argv[0], "bye") == 0)
 769         /* Special value to mean "exit the program. */
 770         return EXIT_THE_PROGRAM;
 771
 772     BIO_printf(bio_err, "Invalid command '%s'; type \"help\" for a list.\n",
 773                argv[0]);
 774     return 1;
 775 }
 776
 777 static void list_pkey(void)
 778 {
 779     int i;
 780
 781     for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
 782         const EVP_PKEY_ASN1_METHOD *ameth;
 783         int pkey_id, pkey_base_id, pkey_flags;
 784         const char *pinfo, *pem_str;
 785         ameth = EVP_PKEY_asn1_get0(i);
 786         EVP_PKEY_asn1_get0_info(&pkey_id, &pkey_base_id, &pkey_flags,
 787                                 &pinfo, &pem_str, ameth);
 788         if (pkey_flags & ASN1_PKEY_ALIAS) {
 789             BIO_printf(bio_out, "Name: %s\n", OBJ_nid2ln(pkey_id));
 790             BIO_printf(bio_out, "\tAlias for: %s\n",
 791                        OBJ_nid2ln(pkey_base_id));
 792         } else {
 793             BIO_printf(bio_out, "Name: %s\n", pinfo);
 794             BIO_printf(bio_out, "\tType: %s Algorithm\n",
 795                        pkey_flags & ASN1_PKEY_DYNAMIC ?
 796                        "External" : "Builtin");
 797             BIO_printf(bio_out, "\tOID: %s\n", OBJ_nid2ln(pkey_id));
 798             if (pem_str == NULL)
 799                 pem_str = "(none)";
 800             BIO_printf(bio_out, "\tPEM string: %s\n", pem_str);
 801         }
 802
 803     }
 804 }
 805
 806 static void list_pkey_meth(void)
 807 {
 808     size_t i;
 809     size_t meth_count = EVP_PKEY_meth_get_count();
 810
 811     for (i = 0; i < meth_count; i++) {
 812         const EVP_PKEY_METHOD *pmeth = EVP_PKEY_meth_get0(i);
 813         int pkey_id, pkey_flags;
 814
 815         EVP_PKEY_meth_get0_info(&pkey_id, &pkey_flags, pmeth);
 816         BIO_printf(bio_out, "%s\n", OBJ_nid2ln(pkey_id));
 817         BIO_printf(bio_out, "\tType: %s Algorithm\n",
 818                    pkey_flags & ASN1_PKEY_DYNAMIC ?  "External" : "Builtin");
 819     }
 820 }
 821
 822 static int function_cmp(const FUNCTION * a, const FUNCTION * b)
 823 {
 824     return strncmp(a->name, b->name, 8);
 825 }
 826
 827 static unsigned long function_hash(const FUNCTION * a)
 828 {
 829     return OPENSSL_LH_strhash(a->name);
 830 }
 831
 832 static int SortFnByName(const void *_f1, const void *_f2)
 833 {
 834     const FUNCTION *f1 = _f1;
 835     const FUNCTION *f2 = _f2;
 836
 837     if (f1->type != f2->type)
 838         return f1->type - f2->type;
 839     return strcmp(f1->name, f2->name);
 840 }
 841
 842 static void list_engines(void)
 843 {
 844 #ifndef OPENSSL_NO_ENGINE
 845     ENGINE *e;
 846
 847     BIO_puts(bio_out, "Engines:\n");
 848     e = ENGINE_get_first();
 849     while (e) {
 850         BIO_printf(bio_out, "%s\n", ENGINE_get_id(e));
 851         e = ENGINE_get_next(e);
 852     }
 853 #else
 854     BIO_puts(bio_out, "Engine support is disabled.\n");
 855 #endif
 856 }
 857
 858 static void list_disabled(void)
 859 {
 860     BIO_puts(bio_out, "Disabled algorithms:\n");
 861 #ifdef OPENSSL_NO_ARIA
 862     BIO_puts(bio_out, "ARIA\n");
 863 #endif
 864 #ifdef OPENSSL_NO_BF
 865     BIO_puts(bio_out, "BF\n");
 866 #endif
 867 #ifdef OPENSSL_NO_BLAKE2
 868     BIO_puts(bio_out, "BLAKE2\n");
 869 #endif
 870 #ifdef OPENSSL_NO_CAMELLIA
 871     BIO_puts(bio_out, "CAMELLIA\n");
 872 #endif
 873 #ifdef OPENSSL_NO_CAST
 874     BIO_puts(bio_out, "CAST\n");
 875 #endif
 876 #ifdef OPENSSL_NO_CMAC
 877     BIO_puts(bio_out, "CMAC\n");
 878 #endif
 879 #ifdef OPENSSL_NO_CMS
 880     BIO_puts(bio_out, "CMS\n");
 881 #endif
 882 #ifdef OPENSSL_NO_COMP
 883     BIO_puts(bio_out, "COMP\n");
 884 #endif
 885 #ifdef OPENSSL_NO_DES
 886     BIO_puts(bio_out, "DES\n");
 887 #endif
 888 #ifdef OPENSSL_NO_DGRAM
 889     BIO_puts(bio_out, "DGRAM\n");
 890 #endif
 891 #ifdef OPENSSL_NO_DH
 892     BIO_puts(bio_out, "DH\n");
 893 #endif
 894 #ifdef OPENSSL_NO_DSA
 895     BIO_puts(bio_out, "DSA\n");
 896 #endif
 897 #if defined(OPENSSL_NO_DTLS)
 898     BIO_puts(bio_out, "DTLS\n");
 899 #endif
 900 #if defined(OPENSSL_NO_DTLS1)
 901     BIO_puts(bio_out, "DTLS1\n");
 902 #endif
 903 #if defined(OPENSSL_NO_DTLS1_2)
 904     BIO_puts(bio_out, "DTLS1_2\n");
 905 #endif
 906 #ifdef OPENSSL_NO_EC
 907     BIO_puts(bio_out, "EC\n");
 908 #endif
 909 #ifdef OPENSSL_NO_EC2M
 910     BIO_puts(bio_out, "EC2M\n");
 911 #endif
 912 #ifdef OPENSSL_NO_ENGINE
 913     BIO_puts(bio_out, "ENGINE\n");
 914 #endif
 915 #ifdef OPENSSL_NO_GOST
 916     BIO_puts(bio_out, "GOST\n");
 917 #endif
 918 #ifdef OPENSSL_NO_HEARTBEATS
 919     BIO_puts(bio_out, "HEARTBEATS\n");
 920 #endif
 921 #ifdef OPENSSL_NO_IDEA
 922     BIO_puts(bio_out, "IDEA\n");
 923 #endif
 924 #ifdef OPENSSL_NO_MD2
 925     BIO_puts(bio_out, "MD2\n");
 926 #endif
 927 #ifdef OPENSSL_NO_MD4
 928     BIO_puts(bio_out, "MD4\n");
 929 #endif
 930 #ifdef OPENSSL_NO_MD5
 931     BIO_puts(bio_out, "MD5\n");
 932 #endif
 933 #ifdef OPENSSL_NO_MDC2
 934     BIO_puts(bio_out, "MDC2\n");
 935 #endif
 936 #ifdef OPENSSL_NO_OCB
 937     BIO_puts(bio_out, "OCB\n");
 938 #endif
 939 #ifdef OPENSSL_NO_OCSP
 940     BIO_puts(bio_out, "OCSP\n");
 941 #endif
 942 #ifdef OPENSSL_NO_PSK
 943     BIO_puts(bio_out, "PSK\n");
 944 #endif
 945 #ifdef OPENSSL_NO_RC2
 946     BIO_puts(bio_out, "RC2\n");
 947 #endif
 948 #ifdef OPENSSL_NO_RC4
 949     BIO_puts(bio_out, "RC4\n");
 950 #endif
 951 #ifdef OPENSSL_NO_RC5
 952     BIO_puts(bio_out, "RC5\n");
 953 #endif
 954 #ifdef OPENSSL_NO_RMD160
 955     BIO_puts(bio_out, "RMD160\n");
 956 #endif
 957 #ifdef OPENSSL_NO_RSA
 958     BIO_puts(bio_out, "RSA\n");
 959 #endif
 960 #ifdef OPENSSL_NO_SCRYPT
 961     BIO_puts(bio_out, "SCRYPT\n");
 962 #endif
 963 #ifdef OPENSSL_NO_SCTP
 964     BIO_puts(bio_out, "SCTP\n");
 965 #endif
 966 #ifdef OPENSSL_NO_SEED
 967     BIO_puts(bio_out, "SEED\n");
 968 #endif
 969 #ifdef OPENSSL_NO_SM2
 970     BIO_puts(bio_out, "SM2\n");
 971 #endif
 972 #ifdef OPENSSL_NO_SM3
 973     BIO_puts(bio_out, "SM3\n");
 974 #endif
 975 #ifdef OPENSSL_NO_SM4
 976     BIO_puts(bio_out, "SM4\n");
 977 #endif
 978 #ifdef OPENSSL_NO_SOCK
 979     BIO_puts(bio_out, "SOCK\n");
 980 #endif
 981 #ifdef OPENSSL_NO_SRP
 982     BIO_puts(bio_out, "SRP\n");
 983 #endif
 984 #ifdef OPENSSL_NO_SRTP
 985     BIO_puts(bio_out, "SRTP\n");
 986 #endif
 987 #ifdef OPENSSL_NO_SSL3
 988     BIO_puts(bio_out, "SSL3\n");
 989 #endif
 990 #ifdef OPENSSL_NO_TLS1
 991     BIO_puts(bio_out, "TLS1\n");
 992 #endif
 993 #ifdef OPENSSL_NO_TLS1_1
 994     BIO_puts(bio_out, "TLS1_1\n");
 995 #endif
 996 #ifdef OPENSSL_NO_TLS1_2
 997     BIO_puts(bio_out, "TLS1_2\n");
 998 #endif
 999 #ifdef OPENSSL_NO_WHIRLPOOL
1000     BIO_puts(bio_out, "WHIRLPOOL\n");
1001 #endif
1002 #ifndef ZLIB
1003     BIO_puts(bio_out, "ZLIB\n");
1004 #endif
1005 }
1006
1007 static LHASH_OF(FUNCTION) *prog_init(void)
1008 {
1009     static LHASH_OF(FUNCTION) *ret = NULL;
1010     static int prog_inited = 0;
1011     FUNCTION *f;
1012     size_t i;
1013
1014     if (prog_inited)
1015         return ret;
1016
1017     prog_inited = 1;
1018
1019     /* Sort alphabetically within category. For nicer help displays. */
1020     for (i = 0, f = functions; f->name != NULL; ++f, ++i)
1021         ;
1022     qsort(functions, i, sizeof(*functions), SortFnByName);
1023
1024     if ((ret = lh_FUNCTION_new(function_hash, function_cmp)) == NULL)
1025         return NULL;
1026
1027     for (f = functions; f->name != NULL; f++)
1028         (void)lh_FUNCTION_insert(ret, f);
1029     return ret;
1030 }