crypto/external/bsd/openssl/dist/apps/engine.c

   1 /* apps/engine.c -*- mode: C; c-file-style: "eay" -*- */
   2 /*
   3  * Written by Richard Levitte <richard@levitte.org> for the OpenSSL project
   4  * 2000.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #ifdef OPENSSL_NO_STDIO
  64 # define APPS_WIN16
  65 #endif
  66 #include "apps.h"
  67 #include <openssl/err.h>
  68 #ifndef OPENSSL_NO_ENGINE
  69 # include <openssl/engine.h>
  70 # include <openssl/ssl.h>
  71
  72 # undef PROG
  73 # define PROG    engine_main
  74
  75 static const char *engine_usage[] = {
  76     "usage: engine opts [engine ...]\n",
  77     " -v[v[v[v]]] - verbose mode, for each engine, list its 'control commands'\n",
  78     "               -vv will additionally display each command's description\n",
  79     "               -vvv will also add the input flags for each command\n",
  80     "               -vvvv will also show internal input flags\n",
  81     " -c          - for each engine, also list the capabilities\n",
  82     " -t[t]       - for each engine, check that they are really available\n",
  83     "               -tt will display error trace for unavailable engines\n",
  84     " -pre <cmd>  - runs command 'cmd' against the ENGINE before any attempts\n",
  85     "               to load it (if -t is used)\n",
  86     " -post <cmd> - runs command 'cmd' against the ENGINE after loading it\n",
  87     "               (only used if -t is also provided)\n",
  88     " NB: -pre and -post will be applied to all ENGINEs supplied on the command\n",
  89     " line, or all supported ENGINEs if none are specified.\n",
  90     " Eg. '-pre \"SO_PATH:/lib/libdriver.so\"' calls command \"SO_PATH\" with\n",
  91     " argument \"/lib/libdriver.so\".\n",
  92     NULL
  93 };
  94
  95 static void identity(char *ptr)
  96 {
  97     return;
  98 }
  99
 100 static int append_buf(char **buf, const char *s, int *size, int step)
 101 {
 102     int l = strlen(s);
 103
 104     if (*buf == NULL) {
 105         *size = step;
 106         *buf = OPENSSL_malloc(*size);
 107         if (*buf == NULL)
 108             return 0;
 109         **buf = '\0';
 110     }
 111
 112     if (**buf != '\0')
 113         l += 2;                 /* ", " */
 114
 115     if (strlen(*buf) + strlen(s) >= (unsigned int)*size) {
 116         *size += step;
 117         *buf = OPENSSL_realloc(*buf, *size);
 118     }
 119
 120     if (*buf == NULL)
 121         return 0;
 122
 123     if (**buf != '\0')
 124         BUF_strlcat(*buf, ", ", *size);
 125     BUF_strlcat(*buf, s, *size);
 126
 127     return 1;
 128 }
 129
 130 static int util_flags(BIO *bio_out, unsigned int flags, const char *indent)
 131 {
 132     int started = 0, err = 0;
 133     /* Indent before displaying input flags */
 134     BIO_printf(bio_out, "%s%s(input flags): ", indent, indent);
 135     if (flags == 0) {
 136         BIO_printf(bio_out, "<no flags>\n");
 137         return 1;
 138     }
 139     /*
 140      * If the object is internal, mark it in a way that shows instead of
 141      * having it part of all the other flags, even if it really is.
 142      */
 143     if (flags & ENGINE_CMD_FLAG_INTERNAL) {
 144         BIO_printf(bio_out, "[Internal] ");
 145     }
 146
 147     if (flags & ENGINE_CMD_FLAG_NUMERIC) {
 148         BIO_printf(bio_out, "NUMERIC");
 149         started = 1;
 150     }
 151     /*
 152      * Now we check that no combinations of the mutually exclusive NUMERIC,
 153      * STRING, and NO_INPUT flags have been used. Future flags that can be
 154      * OR'd together with these would need to added after these to preserve
 155      * the testing logic.
 156      */
 157     if (flags & ENGINE_CMD_FLAG_STRING) {
 158         if (started) {
 159             BIO_printf(bio_out, "|");
 160             err = 1;
 161         }
 162         BIO_printf(bio_out, "STRING");
 163         started = 1;
 164     }
 165     if (flags & ENGINE_CMD_FLAG_NO_INPUT) {
 166         if (started) {
 167             BIO_printf(bio_out, "|");
 168             err = 1;
 169         }
 170         BIO_printf(bio_out, "NO_INPUT");
 171         started = 1;
 172     }
 173     /* Check for unknown flags */
 174     flags = flags & ~ENGINE_CMD_FLAG_NUMERIC &
 175         ~ENGINE_CMD_FLAG_STRING &
 176         ~ENGINE_CMD_FLAG_NO_INPUT & ~ENGINE_CMD_FLAG_INTERNAL;
 177     if (flags) {
 178         if (started)
 179             BIO_printf(bio_out, "|");
 180         BIO_printf(bio_out, "<0x%04X>", flags);
 181     }
 182     if (err)
 183         BIO_printf(bio_out, "  <illegal flags!>");
 184     BIO_printf(bio_out, "\n");
 185     return 1;
 186 }
 187
 188 static int util_verbose(ENGINE *e, int verbose, BIO *bio_out,
 189                         const char *indent)
 190 {
 191     static const int line_wrap = 78;
 192     int num;
 193     int ret = 0;
 194     char *name = NULL;
 195     char *desc = NULL;
 196     int flags;
 197     int xpos = 0;
 198     STACK_OF(OPENSSL_STRING) *cmds = NULL;
 199     if (!ENGINE_ctrl(e, ENGINE_CTRL_HAS_CTRL_FUNCTION, 0, NULL, NULL) ||
 200         ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_FIRST_CMD_TYPE,
 201                             0, NULL, NULL)) <= 0)) {
 202 # if 0
 203         BIO_printf(bio_out, "%s<no control commands>\n", indent);
 204 # endif
 205         return 1;
 206     }
 207
 208     cmds = sk_OPENSSL_STRING_new_null();
 209
 210     if (!cmds)
 211         goto err;
 212     do {
 213         int len;
 214         /* Get the command input flags */
 215         if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num,
 216                                  NULL, NULL)) < 0)
 217             goto err;
 218         if (!(flags & ENGINE_CMD_FLAG_INTERNAL) || verbose >= 4) {
 219             /* Get the command name */
 220             if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_LEN_FROM_CMD, num,
 221                                    NULL, NULL)) <= 0)
 222                 goto err;
 223             if ((name = OPENSSL_malloc(len + 1)) == NULL)
 224                 goto err;
 225             if (ENGINE_ctrl(e, ENGINE_CTRL_GET_NAME_FROM_CMD, num, name,
 226                             NULL) <= 0)
 227                 goto err;
 228             /* Get the command description */
 229             if ((len = ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_LEN_FROM_CMD, num,
 230                                    NULL, NULL)) < 0)
 231                 goto err;
 232             if (len > 0) {
 233                 if ((desc = OPENSSL_malloc(len + 1)) == NULL)
 234                     goto err;
 235                 if (ENGINE_ctrl(e, ENGINE_CTRL_GET_DESC_FROM_CMD, num, desc,
 236                                 NULL) <= 0)
 237                     goto err;
 238             }
 239             /* Now decide on the output */
 240             if (xpos == 0)
 241                 /* Do an indent */
 242                 xpos = BIO_puts(bio_out, indent);
 243             else
 244                 /* Otherwise prepend a ", " */
 245                 xpos += BIO_printf(bio_out, ", ");
 246             if (verbose == 1) {
 247                 /*
 248                  * We're just listing names, comma-delimited
 249                  */
 250                 if ((xpos > (int)strlen(indent)) &&
 251                     (xpos + (int)strlen(name) > line_wrap)) {
 252                     BIO_printf(bio_out, "\n");
 253                     xpos = BIO_puts(bio_out, indent);
 254                 }
 255                 xpos += BIO_printf(bio_out, "%s", name);
 256             } else {
 257                 /* We're listing names plus descriptions */
 258                 BIO_printf(bio_out, "%s: %s\n", name,
 259                            (desc == NULL) ? "<no description>" : desc);
 260                 /* ... and sometimes input flags */
 261                 if ((verbose >= 3) && !util_flags(bio_out, flags, indent))
 262                     goto err;
 263                 xpos = 0;
 264             }
 265         }
 266         OPENSSL_free(name);
 267         name = NULL;
 268         if (desc) {
 269             OPENSSL_free(desc);
 270             desc = NULL;
 271         }
 272         /* Move to the next command */
 273         num = ENGINE_ctrl(e, ENGINE_CTRL_GET_NEXT_CMD_TYPE, num, NULL, NULL);
 274     } while (num > 0);
 275     if (xpos > 0)
 276         BIO_printf(bio_out, "\n");
 277     ret = 1;
 278  err:
 279     if (cmds)
 280         sk_OPENSSL_STRING_pop_free(cmds, identity);
 281     if (name)
 282         OPENSSL_free(name);
 283     if (desc)
 284         OPENSSL_free(desc);
 285     return ret;
 286 }
 287
 288 static void util_do_cmds(ENGINE *e, STACK_OF(OPENSSL_STRING) *cmds,
 289                          BIO *bio_out, const char *indent)
 290 {
 291     int loop, res, num = sk_OPENSSL_STRING_num(cmds);
 292
 293     if (num < 0) {
 294         BIO_printf(bio_out, "[Error]: internal stack error\n");
 295         return;
 296     }
 297     for (loop = 0; loop < num; loop++) {
 298         char buf[256];
 299         const char *cmd, *arg;
 300         cmd = sk_OPENSSL_STRING_value(cmds, loop);
 301         res = 1;                /* assume success */
 302         /* Check if this command has no ":arg" */
 303         if ((arg = strstr(cmd, ":")) == NULL) {
 304             if (!ENGINE_ctrl_cmd_string(e, cmd, NULL, 0))
 305                 res = 0;
 306         } else {
 307             if ((int)(arg - cmd) > 254) {
 308                 BIO_printf(bio_out, "[Error]: command name too long\n");
 309                 return;
 310             }
 311             memcpy(buf, cmd, (int)(arg - cmd));
 312             buf[arg - cmd] = '\0';
 313             arg++;              /* Move past the ":" */
 314             /* Call the command with the argument */
 315             if (!ENGINE_ctrl_cmd_string(e, buf, arg, 0))
 316                 res = 0;
 317         }
 318         if (res)
 319             BIO_printf(bio_out, "[Success]: %s\n", cmd);
 320         else {
 321             BIO_printf(bio_out, "[Failure]: %s\n", cmd);
 322             ERR_print_errors(bio_out);
 323         }
 324     }
 325 }
 326
 327 int MAIN(int, char **);
 328
 329 int MAIN(int argc, char **argv)
 330 {
 331     int ret = 1, i;
 332     const char **pp;
 333     int verbose = 0, list_cap = 0, test_avail = 0, test_avail_noise = 0;
 334     ENGINE *e;
 335     STACK_OF(OPENSSL_STRING) *engines = sk_OPENSSL_STRING_new_null();
 336     STACK_OF(OPENSSL_STRING) *pre_cmds = sk_OPENSSL_STRING_new_null();
 337     STACK_OF(OPENSSL_STRING) *post_cmds = sk_OPENSSL_STRING_new_null();
 338     int badops = 1;
 339     BIO *bio_out = NULL;
 340     const char *indent = "     ";
 341
 342     apps_startup();
 343     SSL_load_error_strings();
 344
 345     if (bio_err == NULL)
 346         bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
 347
 348     if (!load_config(bio_err, NULL))
 349         goto end;
 350     bio_out = BIO_new_fp(stdout, BIO_NOCLOSE);
 351 # ifdef OPENSSL_SYS_VMS
 352     {
 353         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 354         bio_out = BIO_push(tmpbio, bio_out);
 355     }
 356 # endif
 357
 358     argc--;
 359     argv++;
 360     while (argc >= 1) {
 361         if (strncmp(*argv, "-v", 2) == 0) {
 362             if (strspn(*argv + 1, "v") < strlen(*argv + 1))
 363                 goto skip_arg_loop;
 364             if ((verbose = strlen(*argv + 1)) > 4)
 365                 goto skip_arg_loop;
 366         } else if (strcmp(*argv, "-c") == 0)
 367             list_cap = 1;
 368         else if (strncmp(*argv, "-t", 2) == 0) {
 369             test_avail = 1;
 370             if (strspn(*argv + 1, "t") < strlen(*argv + 1))
 371                 goto skip_arg_loop;
 372             if ((test_avail_noise = strlen(*argv + 1) - 1) > 1)
 373                 goto skip_arg_loop;
 374         } else if (strcmp(*argv, "-pre") == 0) {
 375             argc--;
 376             argv++;
 377             if (argc == 0)
 378                 goto skip_arg_loop;
 379             sk_OPENSSL_STRING_push(pre_cmds, *argv);
 380         } else if (strcmp(*argv, "-post") == 0) {
 381             argc--;
 382             argv++;
 383             if (argc == 0)
 384                 goto skip_arg_loop;
 385             sk_OPENSSL_STRING_push(post_cmds, *argv);
 386         } else if ((strncmp(*argv, "-h", 2) == 0) ||
 387                    (strcmp(*argv, "-?") == 0))
 388             goto skip_arg_loop;
 389         else
 390             sk_OPENSSL_STRING_push(engines, *argv);
 391         argc--;
 392         argv++;
 393     }
 394     /* Looks like everything went OK */
 395     badops = 0;
 396  skip_arg_loop:
 397
 398     if (badops) {
 399         for (pp = engine_usage; (*pp != NULL); pp++)
 400             BIO_printf(bio_err, "%s", *pp);
 401         goto end;
 402     }
 403
 404     if (sk_OPENSSL_STRING_num(engines) == 0) {
 405         for (e = ENGINE_get_first(); e != NULL; e = ENGINE_get_next(e)) {
 406             sk_OPENSSL_STRING_push(engines, (char *)ENGINE_get_id(e));
 407         }
 408     }
 409
 410     for (i = 0; i < sk_OPENSSL_STRING_num(engines); i++) {
 411         const char *id = sk_OPENSSL_STRING_value(engines, i);
 412         if ((e = ENGINE_by_id(id)) != NULL) {
 413             const char *name = ENGINE_get_name(e);
 414             /*
 415              * Do "id" first, then "name". Easier to auto-parse.
 416              */
 417             BIO_printf(bio_out, "(%s) %s\n", id, name);
 418             util_do_cmds(e, pre_cmds, bio_out, indent);
 419             if (strcmp(ENGINE_get_id(e), id) != 0) {
 420                 BIO_printf(bio_out, "Loaded: (%s) %s\n",
 421                            ENGINE_get_id(e), ENGINE_get_name(e));
 422             }
 423             if (list_cap) {
 424                 int cap_size = 256;
 425                 char *cap_buf = NULL;
 426                 int k, n;
 427                 const int *nids;
 428                 ENGINE_CIPHERS_PTR fn_c;
 429                 ENGINE_DIGESTS_PTR fn_d;
 430                 ENGINE_PKEY_METHS_PTR fn_pk;
 431
 432                 if (ENGINE_get_RSA(e) != NULL
 433                     && !append_buf(&cap_buf, "RSA", &cap_size, 256))
 434                     goto end;
 435                 if (ENGINE_get_DSA(e) != NULL
 436                     && !append_buf(&cap_buf, "DSA", &cap_size, 256))
 437                     goto end;
 438                 if (ENGINE_get_DH(e) != NULL
 439                     && !append_buf(&cap_buf, "DH", &cap_size, 256))
 440                     goto end;
 441                 if (ENGINE_get_RAND(e) != NULL
 442                     && !append_buf(&cap_buf, "RAND", &cap_size, 256))
 443                     goto end;
 444
 445                 fn_c = ENGINE_get_ciphers(e);
 446                 if (!fn_c)
 447                     goto skip_ciphers;
 448                 n = fn_c(e, NULL, &nids, 0);
 449                 for (k = 0; k < n; ++k)
 450                     if (!append_buf(&cap_buf,
 451                                     OBJ_nid2sn(nids[k]), &cap_size, 256))
 452                         goto end;
 453
 454  skip_ciphers:
 455                 fn_d = ENGINE_get_digests(e);
 456                 if (!fn_d)
 457                     goto skip_digests;
 458                 n = fn_d(e, NULL, &nids, 0);
 459                 for (k = 0; k < n; ++k)
 460                     if (!append_buf(&cap_buf,
 461                                     OBJ_nid2sn(nids[k]), &cap_size, 256))
 462                         goto end;
 463
 464  skip_digests:
 465                 fn_pk = ENGINE_get_pkey_meths(e);
 466                 if (!fn_pk)
 467                     goto skip_pmeths;
 468                 n = fn_pk(e, NULL, &nids, 0);
 469                 for (k = 0; k < n; ++k)
 470                     if (!append_buf(&cap_buf,
 471                                     OBJ_nid2sn(nids[k]), &cap_size, 256))
 472                         goto end;
 473  skip_pmeths:
 474                 if (cap_buf && (*cap_buf != '\0'))
 475                     BIO_printf(bio_out, " [%s]\n", cap_buf);
 476
 477                 OPENSSL_free(cap_buf);
 478             }
 479             if (test_avail) {
 480                 BIO_printf(bio_out, "%s", indent);
 481                 if (ENGINE_init(e)) {
 482                     BIO_printf(bio_out, "[ available ]\n");
 483                     util_do_cmds(e, post_cmds, bio_out, indent);
 484                     ENGINE_finish(e);
 485                 } else {
 486                     BIO_printf(bio_out, "[ unavailable ]\n");
 487                     if (test_avail_noise)
 488                         ERR_print_errors_fp(stdout);
 489                     ERR_clear_error();
 490                 }
 491             }
 492             if ((verbose > 0) && !util_verbose(e, verbose, bio_out, indent))
 493                 goto end;
 494             ENGINE_free(e);
 495         } else
 496             ERR_print_errors(bio_err);
 497     }
 498
 499     ret = 0;
 500  end:
 501
 502     ERR_print_errors(bio_err);
 503     sk_OPENSSL_STRING_pop_free(engines, identity);
 504     sk_OPENSSL_STRING_pop_free(pre_cmds, identity);
 505     sk_OPENSSL_STRING_pop_free(post_cmds, identity);
 506     if (bio_out != NULL)
 507         BIO_free_all(bio_out);
 508     apps_shutdown();
 509     OPENSSL_EXIT(ret);
 510 }
 511 #else
 512
 513 # if PEDANTIC
 514 static void *dummy = &dummy;
 515 # endif
 516
 517 #endif