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  47  * The LHASH callbacks ("hash" & "cmp") have been replaced by functions with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