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  47  * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with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